Water Body Name: | Orcutt Creek |
Water Body ID: | CAR3121003020011129154708 |
Water Body Type: | River & Stream |
DECISION ID |
82196 |
Region 3 |
Orcutt Creek |
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Pollutant: | Boron |
Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2027 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Three lines of evidence are available in the administrative record to assess this pollutant. Seventeen of the 97 samples exceed the water quality objective for agricultural uses. Note, this water segment / pollutant combination was added to the CWA section 303(d) List prior to 2006 and the creation of the assessment database. The basis of the original listing is not documented here however, more recent data support the decision. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Seventeen of the 97 samples exceed the water quality objective and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 9720 | ||||
Pollutant: | Boron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 36 | ||||
Number of Exceedances: | 5 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 5 of 36 samples exceed the criterion for Boron, dissolved. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. In addition, waters used for irrigation and livestock watering shall not exceed concentrations for those chemicals listed in Table 3.4 (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). Table 3-4 (page III-9) lists the maximum concentration for boron for irrigation supply is 0.75 mg/L. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 1/12/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 51119 | ||||
Pollutant: | Boron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 8 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 8 of 49 samples exceed the criterion for Boron, dissolved. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. In addition, waters used for irrigation and livestock watering shall not exceed concentrations for those chemicals listed in Table 3-4 (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). Table 3-4 (page III-9) lists the maximum concentration for boron for irrigation supply is 0.75 mg/L. | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
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LOE ID: | 9751 | ||||
Pollutant: | Boron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 4 of 12 samples exceed the criterion for Boron. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. In addition, waters used for irrigation and livestock watering shall not exceed concentrations for those chemicals listed in Table 3.4 (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). Table 3-4 (page III-9) lists the maximum concentration for boron for irrigation supply is 0.75 mg/L. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 4/12/2000-6/26/2000. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
82247 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Chloride |
Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2027 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Ninety-three of the 97 samples exceed the water quality objective for agricultural uses. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Ninety-three of the 97 samples exceed the water quality objective and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 9721 | ||||
Pollutant: | Chloride | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 48 | ||||
Number of Exceedances: | 46 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 46 of 48 samples exceed the criterion for Chloride. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when chloride exceeds 106 mg/L in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 1/12/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 51120 | ||||
Pollutant: | Chloride | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 47 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 47 of 49 samples exceed the criterion for Chloride. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when chloride exceeds 106 mg/L in irrigation supply water. | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
DECISION ID |
82354 |
Region 3 |
Orcutt Creek |
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Pollutant: | Sodium |
Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2027 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Ninety-three of the 97 samples exceed the water quality objective for agricultural uses. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Ninety-three of the 97 samples exceed the water quality objective and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 51141 | ||||
Pollutant: | Sodium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 47 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 47 of 49 samples exceed the criterion for Sodium. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when sodium exceeds 69 mg/L in irrigation supply water. | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
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LOE ID: | 9737 | ||||
Pollutant: | Sodium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 48 | ||||
Number of Exceedances: | 46 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 46 of 48 samples exceed the criterion for Sodium. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when sodium exceeds 69 mg/L in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 1/12/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
74862 |
Region 3 |
Orcutt Creek |
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Pollutant: | Specific Conductivity |
Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2027 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Note that the pollutant name for the older LOEs and decisions is electrical conductivity. This was an error and the pollutant name should have always been specific conductivity. For this reason, the pollutant name was changed for this decision and sample and exceedance counts are summed for LOEs with both pollutant names in this assessment for specific conductivity. Five lines of evidence are available in the administrative record to assess this pollutant. Fifty-three of the 189 samples exceed the water quality objective for agricultural uses. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Fifty-three of the 189 samples exceed the water quality objective and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 11444 | ||||
Pollutant: | Electrical Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 8 samples exceed the criterion for Conductivity(Us). | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3.0 mS/cm in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 6/27/2000-9/7/2000. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 51121 | ||||
Pollutant: | Specific Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 19 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 19 of 49 samples exceed the criterion for Conductivity(Us). | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3000 uS/cm in irrigation supply water. | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
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LOE ID: | 11662 | ||||
Pollutant: | Electrical Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 36 | ||||
Number of Exceedances: | 11 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 11 of 36 samples exceed the criterion for Conductivity(Us). | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3.0 mS/cm in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/3/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48654 | ||||
Pollutant: | Specific Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 90 | ||||
Number of Exceedances: | 21 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 21 of 90 samples exceed the criterion for Conductivity(Us). | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3000 uS/cm in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 47893 | ||||
Pollutant: | Specific Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Region 3 - Central Coast Region staff assessed R3 public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Conductivity(Us). | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when conductivity exceeds 3000 uS/cm in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/22/2008-10/29/2009 3:02:36 PM. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | A QAPP was not specifically written for this project. However, staff conducting data collection and laboratory analysis are also SWAMP contractors. All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in | ||||
QAPP Information Reference(s): | 2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA | ||||
DECISION ID |
74807 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Temperature, water |
Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2023 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Six lines of evidence are available in the administrative record to assess this pollutant. Fifty-one of the 244 samples exceed the evaluation guideline (Moyle, 1976) used to interpret the water quality objective for water temperature. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Fifty-one of the 244 samples exceed the evaluation guideline and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 13570 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 39 | ||||
Number of Exceedances: | 15 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 15 of 39 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). | ||||
Guideline Reference: | Inland Fishes of California | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/3/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 13588 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). | ||||
Guideline Reference: | Inland Fishes of California | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 6/27/2000-9/7/2000. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 51178 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 7 of 49 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Basin Plan). | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976). | ||||
Guideline Reference: | Inland Fishes of California | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 48710 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 96 | ||||
Number of Exceedances: | 14 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 14 of 96 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976). | ||||
Guideline Reference: | Inland Fishes of California | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 47894 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Region 3 - Central Coast Region staff assessed R3 public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 6 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The optimum range for growth and completion of most life stages of rainbow trout is 13-21 degrees Celsius (Moyle 1976). | ||||
Guideline Reference: | Inland Fishes of California | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/22/2008-10/29/2009 3:02:36 PM. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | A QAPP was not specifically written for this project. However, staff conducting data collection and laboratory analysis are also SWAMP contractors. All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in | ||||
QAPP Information Reference(s): | 2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA | ||||
|
|||||
LOE ID: | 14459 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 46 | ||||
Number of Exceedances: | 13 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 13 of 46 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Natural receiving water temperature of intrastate waters shall not be altered unless it can be demonstrated to the satisfaction of the Regional Board that such alteration in temperature does not adversely affect beneficial uses (General Objective in Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Inland Fishes of California (Moyle 1976) states that for rainbow trout the optimum range for growth and completion of most life stages is 13-21 degrees C (page 129). | ||||
Guideline Reference: | Inland Fishes of California | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 1/27/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
76444 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Turbidity |
Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2023 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
[NUMBER] lines of evidence are available in the administrative record to assess this pollutant. A total of 151 of the 221 samples exceed the evaluation guideline for Cold Freshwater Habitat (Sigler et al. 1984) Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. A total of 151 of the 221 samples exceed the evaluation guideline and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 14458 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 46 | ||||
Number of Exceedances: | 35 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 35 of 46 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. | ||||
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 1/27/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 13571 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 18 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 18 of 24 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. | ||||
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 4/12/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 51177 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 27 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 27 of 49 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. (Basin Plan) | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | Turbidities of 25 NTU or greater can cause a reduction in juvenile salmonid growth due to interference with their ability to find food (Sigler et al. 1984). | ||||
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 12619 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 5 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for Orcutt Creek to determine beneficial use support and results are as follows: 5 of 6 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Sigler et al. (1984) states that turbidities of 25 NTU's or greater caused reduction in juvenile salmonid growth due to interference with their ability to find food. | ||||
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 6/27/2000-9/7/2000. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48709 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 96 | ||||
Number of Exceedances: | 66 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 66 of 96 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall be free of changes in turbidity that cause nuisance or adversely affect beneficial uses. (Basin Plan) | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Turbidities of 25 NTU or greater can cause a reduction in juvenile salmonid growth due to interference with their ability to find food (Sigler et al. 1984). | ||||
Guideline Reference: | Effects of chronic turbidity on density and growth of steelheads and coho salmon. Transactions of the American Fisheries Society 113:142-150 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
DECISION ID |
100340 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Ammonia |
Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Agriculture | Domestic Animals/Livestock | Natural Sources | Urban Runoff/Storm Sewers |
TMDL Name: | Santa Maria River Watershed Nitrogen Compounds and Orthophosphate TMDL |
TMDL Project Code: | 1082 |
Date TMDL Approved by USEPA: | 03/08/2016 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal on the CWA section 303(d) List under sections 2.2 and 4.1 of the Listing Policy. Under section 4.1 of the Policy, a minimum of one line of evidence is needed to assess listing status.
The pollutant name was changed from ¿Unionized Ammonia¿ to ¿Ammonia¿ in the 2014 assessment cycle. This decision replaces the two previously approved decisions, one for each of the pollutants unionized ammonia and total ammonia. This decision contains all of the LOEs from those decisions in addition to new LOEs. Eight lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Four LOEs summarize unionized ammonia data in which 41 of the 199 samples exceed the water quality objective for unionized ammonia set to protect aquatic life. Two LOEs summarize total ammonia data and zero of the 245 samples exceed the EPA's Lifetime Health advisory level for total ammonia in drinking water. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Forty-one of the 199 samples exceed the water quality objective for unionized ammonia and these exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. The Santa Maria River Watershed Nutrients TMDL has been approved by USEPA on March 8, 2016. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
There is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 48574 | ||||
Pollutant: | Ammonia (Unionized) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 67 | ||||
Number of Exceedances: | 12 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 12 of 67 samples exceed the criterion for Ammonia as N, Unionized. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4) . | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 4/10/2007-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 9738 | ||||
Pollutant: | Ammonia (Unionized) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 36 | ||||
Number of Exceedances: | 8 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 8 of 36 samples exceed the criterion for Ammonia as N, Unionized. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4) . | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1]. | ||||
Temporal Representation: | Data was collected over the time period 2/3/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48573 | ||||
Pollutant: | Ammonia as Nitrogen | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 102 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 102 samples exceed the criterion for Ammonia As N, Total. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure." | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-6/29/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 9719 | ||||
Pollutant: | Ammonia as Nitrogen | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 48 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 48 samples exceed the criterion for Ammonia as N, Total. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | USEPA Health Advisory 2006 Edition of the Drinking Water Standards and Health Advisories (EPA 822-R-06-013, 2006). | ||||
Objective/Criterion Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Evaluation Guideline: | EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure." | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 1/12/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 14240 | ||||
Pollutant: | Ammonia as Nitrogen | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 46 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 46 samples exceed the criterion for Ammonia As N, Total. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | USEPA Health Advisory 2006 Edition of the Drinking Water Standards and Health Advisories (EPA 822-R-06-013, 2006). | ||||
Objective/Criterion Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Evaluation Guideline: | EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure." | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 1/27/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 50893 | ||||
Pollutant: | Ammonia as Nitrogen | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 49 samples exceed the criterion for Ammonia As N, Total. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan). | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | EPA's Lifetime Health advisory level for total ammonia is 30.0 mg/L as stated on page 8 of the 2006 edition of the drinking water standards and health advisories. This Advisory Level is defined as "the concentration of a chemical in drinking water that is not expected to cause any adverse noncarcinogenic effects for up to ten days of exposure." | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 51155 | ||||
Pollutant: | Ammonia (Unionized) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 48 | ||||
Number of Exceedances: | 9 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 9 of 48 samples exceed the criterion for Ammonia as N, Unionized. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4) . | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 14425 | ||||
Pollutant: | Ammonia (Unionized) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 48 | ||||
Number of Exceedances: | 12 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 12 of 48 samples exceed the criterion for Ammonia as N, Unionized. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin General Objective, Chapter III, Section II.A.2 (General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries) states that the discharge of wastes shall not cause concentrations of unionized ammonia (NH3) to exceed 0.025 mg/l (as N) in receiving waters (page III-4) . | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 1/27/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
81166 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Chlorpyrifos |
Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Agriculture |
TMDL Name: | Santa Maria River Watershed Toxicity and Pesticides TMDL |
TMDL Project Code: | 1081 |
Date TMDL Approved by USEPA: | 08/31/2015 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the section 303(d) list under sections 4.1 and 4.6 of the Listing Policy. Under 4.1 of the Policy, a minimum of one line of evidence is needed to assess listing status. Under 4.6, a minimum of two lines of evidence are needed to assess listing status.
Thirteen lines of evidence are available in the administrative record to assess this pollutant. Thirty of the thirty water samples exceed the evaluation guideline (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005) set to protect for aquatic life beneficial uses. Note that in LOE #16156, one of the samples is not included in the final sample count because the laboratory¿s method detection limit and reporting limits were greater than the evaluation guideline and the result was non-detect. Therefore the results could not be quantified with the level of certainty required by the Listing Policy. Zero of twenty-seven samples exceeded the USEPA drinking water health advisory. In sediment, three of five sediment samples exceeded the aquatic life evaluation guideline (Amweg and Weston, 2007). Five of five sediment samples (pore water) exceeded the Evaluation Guideline (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005) applied to protect for aquatic life beneficial uses. There is no chlorpyrifos evaluation guideline specific to "sediment, interstitial water" (pore water). LOEs summarizing pore water results will not be the sole basis for any decision. This water segment is also on the CWQ section 303(d) List for toxicity to invertebrates in sediment. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the 303(d) list because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Thirty of thirty samples exceed the evaluation guideline (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005) set to protect for aquatic life beneficial uses. Three of five sediment samples exceed the aquatic life evaluation guideline (Amweg and Weston, 2007). These exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. This water segment is also on the CWQ section 303(d) List for toxicity to invertebrates in sediment. 5. The Santa Maria River Watershed Toxicity and Pesticide TMDL has been approved by the USEPA on August 31, 2015. 6. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
Furthermore, this pollutant waterbody combination should be placed in the 'Being Addressed' portion of the 303(d) list because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 55673 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 12 samples exceed the criterion for Chlorpyrifos. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for chlorpyrifos is 2 µg/L. | ||||
Guideline Reference: | 2011 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
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LOE ID: | 55661 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 3 samples exceed the criterion for Chlorpyrifos. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for chlorpyrifos is the median lethal concentration (LC50) of 1.77 ug/g and is normalized by the percentage of organic carbon in the sediment sample (Amweg and Weston, 2007). | ||||
Guideline Reference: | Whole-sediment toxicity identification evaluation tools for pyrethroid insecticides: I. piperonyl butoxide addition. Environ. Toxicol. Chem. 26:2389-2396. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
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LOE ID: | 55663 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 3 samples exceed the criterion for Chlorpyrifos. Nine additional samples (quantified as either non-detect or detected but not quantified) were not used in this assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000). | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
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LOE ID: | 1930 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Wildlife Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water was sampled at Orcutt Creek (ORC) and in the Santa Maria River (SMA) on four separate occasions (June 2002, September 2002, March 2003, and May 2003) (SWAMP, 2004). Water was toxic at both stations in September 2002 and May 2003 (4 exceedances of 4 measurements). Analysis of chlorpyrifos in water showed that on all occasions when water toxicity was observed, concentrations of chlorpyrifos exceeded the LC 50 for this pesticide for toxicity to Ceriodaphnia dubia. Toxicity Identification Evaluations of water samples from Orcutt Creek and the Santa Maria River showed toxicity to C. dubia was due to chlorpyrifos. At the station on Orcutt Creek, 2 of 2 samples were in exceedance of the aquatic life criteria. | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods.
No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | CDFG Hazardous Assessment Criteria for Aquatic Life: 4-day average = 0.014 ppb, 1-hour day average = 0.025 ppb. | ||||
Guideline Reference: | Placeholder reference 2006 303(d) | ||||
Spatial Representation: | Samples were collected at one station on Orcutt Creek (a tributary to the Santa Maria River). | ||||
Temporal Representation: | Samples were collected on 9/3/2002 and 5/28/2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 15339 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 4 of 4 samples exceed the criterion for Chlorpyrifos. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
Final Data File used for assessment: SWAMP Sediment Chemistry Data from Region 3 Harbors, 2004 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Evaluation Guideline: | One hour average maximum concentration 0.025 ug/L as stated in Sipmann and Finlayson (2000). | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 16156 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 3 samples exceed the criterion for Chlorpyrifos. | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
Final Data File used for assessment: SWAMP Sediment Chemistry Data from Region 3 Harbors, 2004 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Evaluation Guideline: | One hour average maximum concentration 0.025 ug/L as stated in Sipmann and Finlayson (2000). | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORC001 - Orcutt Creek upstream of Santa Maria River at Sand Plant, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road] | ||||
Temporal Representation: | Data was collected on a single day 2/28/2007. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 48576 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 6 of 6 samples exceed the criterion for Chlorpyrifos. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
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LOE ID: | 1931 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Fish Spawning | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Chemical monitoring of sediments | ||||
Data Used to Assess Water Quality: | Sediment was sampled at Orcutt Creek (ORC) and in the Santa Maria River (SMA) on two separate occasions (June 2002 and May 2003). Sediment was toxic at both stations in both samples (SWAMP, 2004). Analysis of chlorpyrifos in sediment porewater showed that on all occasions when water toxicity was observed, concentrations of chlorpyrifos exceeded the LC50 for this pesticide to the amphipod Hyalella azteca. Toxicity Identification Evaluations of sediment samples from Orcutt Creek and the Santa Maria River showed toxicity was due to a combination of chlorpyrifos and other pesticides, likely pyrethroid pesticides (refer to attached excel spreadsheet file). Sediment bulk-phase chemical analyses showed elevated concentrations of chlorpyrifos. | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs: All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods.
No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. |
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Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at one station on Orcutt Creek (a tributary to the Santa Maria River). | ||||
Temporal Representation: | Samples were collected in 5/28/2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures for the primary study were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 55672 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for CHLORPYRIFOS. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for chlorpyrifos is 2 µg/L. | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
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LOE ID: | 55662 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 9 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 9 of 9 samples exceed the criterion for CHLORPYRIFOS. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000). | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
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LOE ID: | 55652 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for Chlorpyrifos. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for chlorpyrifos is the median lethal concentration (LC50) of 1.77 ug/g and is normalized by the percentage of organic carbon in the sediment sample (Amweg and Weston, 2007). | ||||
Guideline Reference: | Whole-sediment toxicity identification evaluation tools for pyrethroid insecticides: I. piperonyl butoxide addition. Environ. Toxicol. Chem. 26:2389-2396. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55765 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Three samples were collected to evaluate sediment toxicity. All three samples exhibited significant toxicity. The toxicity tests included survival and growth of Hyalella azteca. Statistically significant effects on Hyalella azteca survival were observed samples collected on 7/1/2008, 10/15/2008, and 10/29/2009. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Toxicity was defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. In the SWAMP data format, a Significance Effect Code of SL denotes toxic test results. | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected at 312ORC-Orcutt Creek at Sand Plant. | ||||
Temporal Representation: | The samples were collected in July and October 2008 and October 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | |||||
|
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LOE ID: | 55772 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Eight samples were collected to evaluate sediment toxicity. Six of the eight samples exhibited significant toxicity to Hyalella Azteca survival and growth. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected at 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, and 312ORS-Orcutt Solomon Creek at Solomon Road. | ||||
Temporal Representation: | The samples were collected in April 2007, 2008 and 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
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LOE ID: | 55771 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Three samples were collected to evaluate sediment toxicity. Two of the samples exhibited significant toxicity to the both survival and growth of Hyalella azteca. The samples with significant effects were from sties 312GVT and 312ORC. One sample can have multiple toxicity test results but will be counted only once. One sample is defined as being collected on the same day at the same location with the same lab sample id (if provided). | ||||
Data Reference: | Santa Maria Rotation 2007 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. Region 3 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted with the significant effect code SL. SL is defined as the result being significant compared to the negative control based on a statistical test, less than stated the alpha level, AND less than the evaluation threshold. | ||||
Guideline Reference: | Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064 | ||||
Guideline Reference: | SWAMP_Memo_Toxicity_Data_Intrepretation | ||||
Spatial Representation: | The samples were collected at stations 312GVT (Orcutt Creek at Brown Road), 312ORC (Orcutt Creek at the sand plant), and 312ORB (Orcutt Creek at Black Road). | ||||
Temporal Representation: | The samples were collected in April 2008. | ||||
Environmental Conditions: | |||||
QAPP Information: | The SWAMP QAPP (2002) was followed. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 55764 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Four samples were collected to evaluate sediment toxicity at two stations. Four of the four samples exhibited significant toxicity. The toxicity tests included survival and growth of Hyalella azteca. Statistically significant effects on Hyalella azteca were observed in all four samples. Samples from station 312ORC on the follwoing dates: 12/3/2008, 3/31/2009, and 6/10/2009 and samples from station 312GVT on 6/10/09. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Toxicity was defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected at Orcutt Creek, stations 312ORC and 312GVT. | ||||
Temporal Representation: | The samples were collected in December of 2008 and March and June of 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study and analyzed at the Marine Pollution Studies Laboratory.SWAMP QAPP, labs, and field staff. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
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LOE ID: | 23991 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for Toxicity, Hyalella azteca Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312OR1 - Orcutt Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 4/19/2005-4/20/2005. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 23946 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for Toxicity, Hyalella azteca Survival (%) 10 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312OR1 - Orcutt Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 5/15/2006-5/16/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 55664 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Chlorpyrifos. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for chlorpyrifos is 2 µg/L. | ||||
Guideline Reference: | 2011 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
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LOE ID: | 55674 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek. Four samples were collected in Orcutt Creek however one sample result was not used in the assessment because the laboratory method detection limit was above the guideline and the result was non-detect therefore the result could not be quantified with the level of certainty required by the Listing Policy. The remaining three samples all exceeded the water quality guideline. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | There is no chlorpyrifos evaluation guideline specific to "sediment, interstitial water" (pore water). The following evaluation guideline was used to evaluate an exceedance in water quality standards: the freshwater criterion continuous concentration to protect aquatic organisms is 0.015 ug/L (Siepmann and Finlayson 2000, with minor corrections to significant figures as described in Beaulaurier et al., 2005). LOEs summarizing pore water results will not be the sole basis for any decision. | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game (with minor corrections to significant figures as described in Beaulaurier et al., 2005). | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/16/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82459 |
Region 3 |
Orcutt Creek |
||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) |
Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Agriculture |
TMDL Name: | Santa Maria River Watershed Toxicity and Pesticides TMDL |
TMDL Project Code: | 1081 |
Date TMDL Approved by USEPA: | 08/31/2015 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the CWA section 303(d) List under sections 2.2, 4.1 and 4.6 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
Eleven lines of evidence are available in the administrative record to assess this pollutant. Three beneficial uses are assessed. Two of the two water samples exceed the water quality objective for drinking water (California Toxics Rule, 2000). Nine additional samples were included in this assessment and compared to the water quality objectives for Cold Freshwater Habitats, Drinking Water and Collection of fish or shellfish but each of those samples was reported as a ¿non-detect¿ and the laboratory reporting limit was lower than each of the criteria. Because staff cannot determine if the actual concentration exceeds the criteria, those nine samples are not counted in this assessment. In addition, two of ten sediment samples exceed the evaluation guideline (MacDonald et al., 2000) for Cold Freshwater Habitats. This water segment is already on the CWA Section 303(d) List for sediment toxicity and the weight of evidence suggests that DDT concentrations are high enough to be the cause of that toxicity. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Two of the two water samples exceed the water quality objective for drinking water and two of the ten sediment samples exceed the evaluation guideline for aquatic life and these exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. The Santa Maria River Watershed Toxicity and Pesticide TMDL has been approved by USEPA on October 31, 2015. 5. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
There is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55585 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for DDT(p,p). Nine sample results were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The DDT criterion continuous concentration (expressed as a 4-day average) to protect aquatic life in freshwater is 0.001 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55584 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for DDT(p,p). Nine sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The DDT criteria for the protection of human health from consumption of organisms only is 0.00059 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55854 | ||||
Pollutant: | Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for DDT, Total. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for total DDTs is 572 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55737 | ||||
Pollutant: | Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for DDT, Total. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for total DDTs is 572 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
|
|||||
LOE ID: | 55592 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for DDT. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of DDT is 62.9 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
|
|||||
LOE ID: | 55738 | ||||
Pollutant: | Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for DDT, Total. Data assessed were suspended sediment samples isolated from the whole water sample. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for total DDTs is 572 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-2/7/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
|
|||||
LOE ID: | 55574 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for DDT. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of DDT is 62.9 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 1932 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Samples were collected on Orcutt Creek on two occasions: in 2002 and 2003 (SWAMP, 2004). Both measurements for total DDTs and 4,4'-DDT were below freshwater acute criteria, however both measurements exceeded human health criteria for water consumption for both 4,4'-DDT and DDTs (total). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. CTR criteria for: Freshwater acute = 1.1 ppb for 4,4'-DDT and DDTs (total). Human Health (water consumption) = 0.00059 ppb for 4,4'-DDT. Human Health (water consumption) = 0.0059 ppb for DDTs (total). |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at one station on Orcutt Creek (a tributary to the Santa Maria River). | ||||
Temporal Representation: | Samples were collected on 9/3/2002 and 5/28/2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 1933 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Fish Spawning | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Chemical monitoring of sediments | ||||
Data Used to Assess Water Quality: | Sediment was sampled at Orcutt Creek (ORC) and in the Santa Maria River (SMA) in 2002 and 2003 (SWAMP, 2004). In the Orcutt Creek sample, the sediment criterion for DDT (sum) was exceeded (62.9 ppb) in the 2003 sample, but not in 2002 sample. The DDTs (total) criterion (572 ppb) was not exceeded on either occasion. | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. Freshwater Sediment Criteria (Policy): DDT(sum) = 62.9 ppb DDTs(total) = 572 |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at one station on Orcutt Creek (a tributary to the Santa Maria River). | ||||
Temporal Representation: | Samples were collected on 6/28/2002 and 5/28/2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures for the primary study were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 55583 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for DDT(p,p). Nine sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The DDT(p,p) criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55586 | ||||
Pollutant: | DDT (Dichlorodiphenyltrichloroethane) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 3 samples exceed the criterion for DDT. Data assessed were suspended sediment samples isolated from the whole water sample. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of DDT is 62.9 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-2/7/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
DECISION ID |
80943 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Diazinon |
Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Agriculture |
TMDL Name: | Santa Maria River Watershed Toxicity and Pesticides TMDL |
TMDL Project Code: | 1081 |
Date TMDL Approved by USEPA: | 08/31/2015 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal from the section 303(d) list under sections 4.1 and 4.6 of the Listing Policy. Under 4.1 of the Policy, a minimum of one line of evidence is needed to assess listing status. Under 4.6, a minimum of two lines of evidence are needed to assess listing status.
Eleven lines of evidence are available in the administrative record to assess this pollutant. Eleven of the thirty-four samples exceed the evaluation guidelines (Siepmann and Finlayson, 2000) and (Finlayson, 2004) set to protect for aquatic life beneficial uses. One of twenty-seven samples exceeded the USEPA drinking water health advisory. Zero of five sediment samples exceeded the aquatic life evaluation guideline (Ding et al. 2011). One of four sediment samples (pore water) exceeded the evaluation guideline (Finalyson, 2004). There is no diazinon evaluation guideline specific to "sediment, interstitial water" (pore water). LOEs summarizing pore water results will not be the sole basis for any decision. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the 303(d) list because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Eleven of the thirty-four samples exceed the evaluation guidelines (Siepmann and Finlayson, 2000) and (Finlayson, 2004) set to protect for aquatic life beneficial uses and these exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. The Santa Maria River Watershed Toxicity and Pesticides TMDL has been approved by the USEPA on August 31, 2015. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
Furthermore, this pollutant waterbody combination should be placed in the 'Being Addressed' portion of the 303(d) list because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55781 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Diazinon. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for diazinon is 1 µg/L. | ||||
Guideline Reference: | 2011 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55783 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 12 samples exceed the criterion for Diazinon. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for diazinon is 1 µg/L. | ||||
Guideline Reference: | 2011 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55609 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Diazinon. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for diazinon is the median lethal concentration (LC50) of 11 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 11 ug/g is the geometric mean of LC50 values for diazinon from Ding et al. (2011). | ||||
Guideline Reference: | Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83¿92. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55610 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Diazinon. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for diazinon is the median lethal concentration (LC50) of 11 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 11 ug/g is the geometric mean of LC50 values for diazinon from Ding et al. (2011). | ||||
Guideline Reference: | Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83¿92. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
|
|||||
LOE ID: | 55789 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 4 samples exceed the criterion for Diazinon. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | There is no diazinon evaluation guideline specific to "sediment, interstitial water" (pore water). The following evaluation guideline was used to evaluate an exceedance in water quality standards: the freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004). LOEs summarizing pore water results will not be the sole basis for any decision. | ||||
Guideline Reference: | Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/16/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55612 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 5 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 5 of 9 samples exceed the criterion for DIAZINON. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004). | ||||
Guideline Reference: | Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55782 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for DIAZINON. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for diazinon is 1 µg/L. | ||||
Guideline Reference: | 2011 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55613 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 12 samples exceed the criterion for Diazinon. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004). | ||||
Guideline Reference: | Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 10/21/2008-8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 16804 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 3 samples exceed the criterion for Diazinon. | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
Final Data File used for assessment: SWAMP Sediment Chemistry Data from Region 3 Harbors, 2004 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Evaluation Guideline: | One hour average maximum concentration 0.16 ug/L as stated in Sipmann and Finlayson (2000). | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORC001 - Orcutt Creek upstream of Santa Maria River at Sand Plant, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road] | ||||
Temporal Representation: | Data was collected on a single day 2/28/2007. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48655 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 6 samples exceed the criterion for Diazinon. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The freshwater chronic value for diazinon is 0.1 ug/L, expressed as a continuous concentration (Finlayson, 2004). | ||||
Guideline Reference: | Water quality for diazinon. Memorandum to J. Karkoski, Central Valley RWQCB. Rancho Cordova, CA: Pesticide Investigation Unit, CA Department of Fish and Game | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 15340 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 4 samples exceed the criterion for Diazinon. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Evaluation Guideline: | One hour average maximum concentration 0.16 ug/L as stated in Sipmann and Finlayson (2000). | ||||
Guideline Reference: | Water quality criteria for diazinon and chlorpyrifos. Administrative Report 00-3. Rancho Cordova, CA: Pesticide Investigations Unit, Office of Spills and Response. CA Department of Fish and Game | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
82507 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Dieldrin |
Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Agriculture |
TMDL Name: | Santa Maria River Watershed Toxicity and Pesticides TMDL |
TMDL Project Code: | 1081 |
Date TMDL Approved by USEPA: | 08/31/2015 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal on the CWA section 303(d) List under sections 2.2 and 4.1 of the Listing Policy. Under section 4.1 of the Policy, a minimum of one line of evidence is needed to assess listing status.
Three lines of evidence are available in the administrative record to assess this pollutant. Two of the two water samples exceed the California Toxics Rule (CTR) criteria for drinking water but zero of the three sediment samples exceed the evaluation guideline (MacDonald et al., 2000) for aquatic life. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Two of the two water samples exceed the California Toxics Rule (CTR) criteria for drinking water and these exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. The Santa Maria River Watershed Toxicity and Pesticide TMDL has been approved by USEPA on October 31, 2015. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
There is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55798 | ||||
Pollutant: | Dieldrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Dieldrin. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for dieldrin is 61.8 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 1934 | ||||
Pollutant: | Dieldrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Samples were collected on Orcutt Creek in September 2002 and May 2003 (SWAMP, 2004). Two of 2 samples were in exceedance of the CTR Human Health criterion for water consumption. | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. CTR Human Health Criterion for consumption of Water & Organisms = 0.00014 ppb. |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at one station on Orcutt Creek (a tributary to the Santa Maria River). | ||||
Temporal Representation: | Samples were collected on 9/3/2002 and 5/28/2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 1935 | ||||
Pollutant: | Dieldrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Fish Spawning | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Chemical monitoring of sediments | ||||
Data Used to Assess Water Quality: | Sediment was sampled at Orcutt Creek (ORC) in May 2003 and the dieldrin level was below the detection limit (SWAMP, 2004). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. Freshwater Sediment criterion: max Dieldrin = 6.18 ppm. |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | The sample was collected at one station on Orcutt Creek (a tributary to the Santa Maria River). | ||||
Temporal Representation: | One sample was collected on 5/28/2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures for the primary study were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
68709 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Fecal Coliform |
Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Collection System Failure | Domestic Animals/Livestock | Urban Runoff/Storm Sewers |
TMDL Name: | Santa Maria River Watershed Fecal Indicator Bacteria TMDL |
TMDL Project Code: | 917 |
Date TMDL Approved by USEPA: | 04/24/2013 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal on the CWA section 303(d) List under sections 2.2, 4.2 and 4.3 of the Listing Policy. Under 4.3 of the Policy, a minimum of one line of evidence is needed to assess listing status.
Four lines of evidence are available in the administrative record to assess this pollutant. Fifty-two of 93 samples exceed the evaluation guideline set to protect for water contact recreation (i.e. swimming, wading etc.) and 9 of 93 samples exceed the water quality objective for non-contact recreation. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Fifty-two of 93 samples exceed the evaluation guideline set to protect for water contact recreation (i.e. swimming, wading etc.) and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. The Santa Maria River Watershed Fecal Indicator Bacteria TMDL has been approved by USEPA on 04/24/2013. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 11660 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 45 | ||||
Number of Exceedances: | 25 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 25 of 45 samples exceed the criterion for Coliform, Fecal. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 200 MPN/100 ml, nor shall more than ten percent of total samples during any 30-day period exceed 400 MPN/100 ml. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 1/12/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 51049 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 48 | ||||
Number of Exceedances: | 27 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 27 of 48 samples exceed the criterion for Coliform, Fecal. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 200 MPN/100 ml, nor shall more than ten percent of total samples during any 30-day period exceed 400 MPN/100 ml. | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 11661 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 45 | ||||
Number of Exceedances: | 5 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 5 of 45 samples exceed the criterion for Coliform, Fecal. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 1/12/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
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LOE ID: | 51052 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 48 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 4 of 48 samples exceed the criterion for Coliform, Fecal. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml. | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
DECISION ID |
86157 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Nitrate |
Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Agriculture | Domestic Animals/Livestock | Natural Sources |
TMDL Name: | Santa Maria River Watershed Nitrogen Compounds and Orthophosphate TMDL |
TMDL Project Code: | 1082 |
Date TMDL Approved by USEPA: | 03/08/2016 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal on the CWA section 303(d) List under sections 2.2 and 4.1 of the Listing Policy. Under section 4.1 of the Policy, a minimum of one line of evidence is needed to assess listing status.
Seventeen lines of evidence are available in the administrative record to assess this pollutant. Seventy-four of the 138 samples exceed the water quality objective for the Agricultural Supply beneficial use. Thirty-one of the 138 nitrate samples and 167 of the 181 nitrate/nitrite samples exceed the water quality objective for the Municipal and Domestic Supply beneficial use. One hundred thirty-three of the 138 nitrate samples and 141 of the 145 nitrate/nitrite samples exceed the evaluation guideline (Central Coast Region NNE Technical Report, 2010) for the Cold Freshwater Habitat beneficial use. In addition, the following supporting evidence of eutrophication indicates that nutrients contribute to the problem. 1) Dissolved oxygen for this water body ranged from 3.02 to 15.27 mg/L, often exceeding (falling below) the Cold and Warm Freshwater Habitat water quality objectives of 7.0 and 5.0 mg/L (respectively). In addition, this waterbody at times exceeds the upper dissolved oxygen screening level of 13.0 mg/L (R3 NNE Technical Report, 2010). 2) Floating algal mats ranged up to 95% cover, at times exceeding the screening threshold of 50% (R3 NNE Technical Report, 2010). 3) Water column chlorophyll a concentration averaged up to 11.34 ug/L, and peaked at 130 ug/L, frequently exceeding the screening threshold of 15 ug/L (R3 NNE Technical Report, 2010). 4) Using site-specific data from this waterbody, the California Benthic Biomass Predictor Tool, v. 13 (Tetratech, 2007) predicted a benthic algal contribution to oxygen deficit for this water body ranging from 1.12 mg/L (at the most upstream site) to 6.92 mg/L. All sites but the most upstream site exceed the screening threshold for benthic algal contribution to oxygen deficit of 1.25 mg/L (R3 NNE Technical Report, 2010). 5) Using site-specific data from this waterbody and the Revised Qual2K model, the California Benthic Biomass Predictor Tool, v. 13, QUAL2K model (Tetratech, 2007) predicted algae biomass ranging at sites from 26 g/m2 ash-free dry weight (AFDW) (at the most upstream site) to 146 g/m2 AFDW. All sites but the most upstream site exceed both the Cold Freshwater Habitat screening threshold of 60 mg/m2 and the Warm Freshwater Habitat screening threshold of 80 mg/m2 (Creager, et al., 2006). 6) Using site-specific data from this waterbody and the Revised Qual2K model, the California Benthic Biomass Predictor Tool, v. 13 (Tetratech, 2007) predicted benthic chlorophyll a concentrations ranging at sites from 64 mg/m2 to 364 mg/m2. All sites but the most upstream site exceed both the Cold Freshwater Habitat screening threshold of 150 mg/m2 and the Warm Freshwater Habitat screening threshold of 200 mg/m2 (Creager, et al., 2006). Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Seventy-four of the 138 samples exceed the water quality objective for the Agricultural Supply beneficial use. Thirty-one of the 138 nitrate samples and 167 of the 181 nitrate/nitrite samples exceed the water quality objective for the Municipal and Domestic Supply beneficial use. These exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. One hundred thirty-three of the 138 nitrate samples and 141 of the 145 nitrate/nitrite samples exceed the evaluation guideline (Central Coast Region NNE Technical Report, 2010) for the Cold Freshwater Habitat beneficial use and there is sufficient supporting evidence of eutrophication occurring in this water segment as a result of nutrient concentrations. 5. The Santa Maria Watershed Nutrient TMDL has been approved by USEPA on 03/08/2016. 6. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Seventy-four of the 138 samples exceed the water quality objective for the Agricultural Supply beneficial use. Thirty-one of the 138 nitrate samples and 167 of the 181 nitrate/nitrite samples exceed the water quality objective for the Municipal and Domestic Supply beneficial use. These exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. One hundred thirty-three of the 138 nitrate samples and 141 of the 145 nitrate/nitrite samples exceed the evaluation guideline (Central Coast Region NNE Technical Report, 2010) for the Cold Freshwater Habitat beneficial use and there is sufficient supporting evidence of eutrophication occurring in this water segment as a result of nutrient concentrations. 5. The Santa Maria Watershed Nutrient TMDL has been approved by USEPA on 03/08/2016. 6. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 14257 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 12 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 12 of 13 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2005-11/29/2005. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 27878 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 12 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Data for this assessment unit was collected by one monitoring project: CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N. | ||||
Guideline Reference: | Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints. | ||||
Guideline Reference: | Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2005-11/29/2005. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 14353 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 13 | ||||
Number of Exceedances: | 10 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 10 of 13 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when nitrate exceeds 30 mg/L NO3 as N in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2005-11/29/2005. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48656 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 28 | ||||
Number of Exceedances: | 20 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 20 of 28 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when nitrate exceeds 30 mg/L NO3 as N in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 10/28/2008-12/8/2009. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 9735 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 48 | ||||
Number of Exceedances: | 18 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 18 of 48 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when nitrate exceeds 30 mg/L NO3 as N in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 1/12/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 51122 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 26 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 26 of 49 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when nitrate exceeds 30 mg/L NO3 as N in irrigation supply water. | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
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LOE ID: | 50896 | ||||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 47 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 47 of 49 samples exceed the criterion for Nitrate/Nitrite as N. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for nitrate + nitrite (as N) that is incorporated by reference in the Basin Plan is 10.0 mg/L (Basin Plan). | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
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LOE ID: | 48688 | ||||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 96 | ||||
Number of Exceedances: | 85 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 85 of 96 samples exceed the criterion for Nitrate/Nitrite as N. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for nitrate + nitrite (as N) that is incorporated by reference in the Basin Plan is 10.0 mg/L (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 14239 | ||||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 36 | ||||
Number of Exceedances: | 35 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 35 of 36 samples exceed the criterion for Nitrate/Nitrite as N. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | OEHHA public Health Goals for Nitrate and Nitrogen in Drinking Water (December 1997). Page 6. | ||||
Objective/Criterion Reference: | Public health goals for nitrate and nitrite in drinking water | ||||
Evaluation Guideline: | OEHHA Public Health Goal states that sum of the concentration of nitrate + nitrite shall not exceed 10 mg/L (NO3+NO2 expressed as N). | ||||
Guideline Reference: | Public health goals for nitrate and nitrite in drinking water | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 1/27/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 51158 | ||||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 48 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 48 of 49 samples exceed the criterion for Nitrate/Nitrite as N. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan). | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N. | ||||
Guideline Reference: | Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111 | ||||
Guideline Reference: | Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 48673 | ||||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 96 | ||||
Number of Exceedances: | 93 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 93 of 96 samples exceed the criterion for Nitrate/Nitrite as N. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N. | ||||
Guideline Reference: | Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111 | ||||
Guideline Reference: | Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 50895 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 47 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 47 of 49 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for nitrate (NO3 as N) incorporated by reference in the Basin Plan is 10.0 mg/L (Basin Plan). | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 48671 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 28 | ||||
Number of Exceedances: | 27 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 27 of 28 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for nitrate (NO3 as N) incorporated by reference in the Basin Plan is 10.0 mg/L (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 10/28/2008-12/8/2009. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 9736 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 48 | ||||
Number of Exceedances: | 34 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 34 of 48 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin Objective for municipal and domestic supply uses of inland surface waters (Section II.A.2) states the following: waters shall not contain concentrations of chemical constituents in excess of the limits specified in California Code of Regulations, Title 22, Article 4, Chapter 15, Section 64435, Tables 2 and 3 as listed in Table 3-2. The maximum contaminant level listed in Table 3-2 (inorganic and fluoride concentrations not to be exceeded in domestic or municipal supply) for nitrate is 10.0 mg/L (NO3 as N). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 1/12/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 27879 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 48 | ||||
Number of Exceedances: | 45 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Data for this assessment unit was collected by one monitoring project: CCAMP Santa Maria (SantaMaria) | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N. | ||||
Guideline Reference: | Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111 | ||||
Guideline Reference: | Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 1/12/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48670 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 28 | ||||
Number of Exceedances: | 28 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 28 of 28 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N. | ||||
Guideline Reference: | Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints. | ||||
Guideline Reference: | Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 10/28/2008-12/8/2009. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 51157 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 48 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 48 of 49 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (Basin Plan). | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | Technical approach to develop nutrient numeric endpoints for California, Tetra Tech, June 2006. The Central Coast Region numeric target for maximum nitrate concentration is based on the Tetra Tech NNE (Nutrient Numeric Endpoint) Model and CCAMP data for 193 sites, monitored monthly for at least 1 year between January 1998 and December 2006. The model numeric target for aquatic life habitats in the Central Coast Region is 1.0 mg/L Nitrate as N. | ||||
Guideline Reference: | Technical Approach to Develop Nutrient Numeric Endpoints for California. U.S. EPA Region IX. State Water Resources Control Board. 68-C-02-108-To-111 | ||||
Guideline Reference: | Central Coast RegionTechnical Paper: Interpreting Narrative Objectives for Biostimulatory Substances for California Central Coast Waters. This method uses the Technical Approach for Developing California Nutrient Numeric Endpoints. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
DECISION ID |
90484 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Toxicity |
Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Agriculture | Urban Runoff/Storm Sewers |
TMDL Name: | Santa Maria River Watershed Toxicity and Pesticides TMDL |
TMDL Project Code: | 1081 |
Date TMDL Approved by USEPA: | 08/31/2015 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for removal on the CWA section 303(d) List under sections 2.2 and 4.1 of the Listing Policy. Under section 4.1 of the Policy, a minimum of one line of evidence is needed to assess listing status.
Nineteen lines of evidence are available in the administrative record to assess this pollutant. One sample can have multiple toxicity test results but will be counted only once. One sample is defined as being collected on the same day and time at the same location. Six LOEs summarize sediment samples. Four sediment samples are summarized in LOEs using the test organism as the pollutant (i.e. invertebrate toxicity) and eighteen additional sediment samples are summarized in LOEs using the pollutant name ¿toxicity¿. Therefore, twenty-two total samples are available to assess toxic effects in sediment samples. Nineteen of the twenty-two sediment samples resulted in a significant toxic effect to one or more test organisms and therefore exceeds the water quality objective for aquatic life protection. Thirteen LOEs summarize water samples. Eighteen water samples are summarized in LOEs using each of the test organisms as the pollutant name (i.e. plant toxicity, invertebrate toxicity or vertebrate toxicity) and fifty additional water samples are summarized in LOEs using the pollutant name ¿toxicity¿. Therefore, sixty-eight total samples are available to assess toxic effects in water samples. Forty-nine of the sixty-eight water samples resulted in a significant toxic effect to one or more test organisms and therefore exceeds the water quality objective for aquatic life protection. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the CWA section 303(d) List. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Nineteen of the 22 sediment samples and 49 of the 68 water samples resulted in a significant toxic effect to one or more test organisms for the water quality objective set for aquatic life protection. These exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. The Santa Maria River Watershed Toxicity and Pesticide TMDL has been approved by USEPA on October 31, 2015. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.
There is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 24578 | ||||
Pollutant: | Plant Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 10 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 10 samples exceed the criterion for Toxicity, Selenastrum capricornutum Growth (Cell Density) 4 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction in cell count of test organism relative to the control (alpha < 0.05) and cell count <80% of control. | ||||
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312OR1 - Orcutt Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2005-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 24580 | ||||
Pollutant: | Plant Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Toxicity, Thalassiosira Growth (Cell Density) 4 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction in cell count of test organism relative to the control (alpha < 0.05) and cell count <80% of control. | ||||
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ 312OR1 - Orcutt Creek at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 8/22/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 24579 | ||||
Pollutant: | Plant Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 3 samples exceed the criterion for Toxicity, Selenastrum capricornutum Growth (Cell Density) 4 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction in cell count of test organism relative to the control (alpha < 0.05) and cell count <80% of control. | ||||
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORC001 - Orcutt Creek upstream of Santa Maria River at Sand Plant, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road]. | ||||
Temporal Representation: | Data was collected on a single day 2/28/2007. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 23946 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for Toxicity, Hyalella azteca Survival (%) 10 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312OR1 - Orcutt Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 5/15/2006-5/16/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 23991 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for Toxicity, Hyalella azteca Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312OR1 - Orcutt Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 4/19/2005-4/20/2005. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 23927 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 3 samples exceed the criterion for Toxicity, Ceriodaphnia dubia Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORC001 - Orcutt Creek upstream of Santa Maria River at Sand Plant, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road] | ||||
Temporal Representation: | Data was collected on a single day 2/28/2007. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 23920 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 7 of 12 samples exceed the criterion for Toxicity, Ceriodaphnia dubia Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312OR1 - Orcutt Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 3/22/2005-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 24568 | ||||
Pollutant: | Vertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (04SW3001) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Toxicity, Pimephales promelas Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: SWAMP Toxicity Data 2001-06 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORC001 - Orcutt Creek upstream of Santa Maria River at Sand Plant, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road] | ||||
Temporal Representation: | Data was collected on a single day 2/28/2007. SWAMP toxicity monitoring includes both water samples (collected in both winter and summer) and sediment samples (collected in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 23929 | ||||
Pollutant: | Vertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Toxicity, Cyprinodon variegatus Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ 312OR1 - Orcutt Creek at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 8/22/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 24567 | ||||
Pollutant: | Vertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 10 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 10 samples exceed the criterion for Toxicity, Pimephales promelas Survival (%) 7 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312OR1 - Orcutt Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/21/2005-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 55770 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Three samples were collected to evaluate water toxicity on June 27, 2007 from three different Orcutt Creek sites. One sample exhibited significant toxicity to the invertebrate test organism, Hyalella azteca. The toxicity tests included total cell count of Selenastrum capricornutum, survival and growth of Hyalella azteca, and survival and biomass of Pimephales promelas. One sample can have multiple toxicity test results but will be counted only once. One sample is defined as being collected on the same day at the same location. The SWAMP program has provided guidance (July 2013) defining the range of conductivities that are acceptable for each test organism, the concentration at which alternate test species and or high salinity controls should be used. The samples from 312GVT and 312ORB did show significant toxicity to S. capricornutum however, the conductivity of these sample was greater than 3000 uS/cm, the threshold at which the test should be forgone (SWAMP July 2013). These two sample results will not be counted as exceedances. The sample from 312ORC resulted in significant toxicity to H. azteca (which is the alternate test species for the invertebrate test organism used when conductivity of the sample is greater than 2500 uS/cm). The sample from 32ORC also had significant toxicity to S. capricornutum cell growth. However, the significant effects reported for the S. capricornutum test for the 312ORC sample were not calculated using a high salinity control as specified in the SWAMP memo (July 2013). This sample will be counted as an exceedance because of the toxicity effects to H. azteca. Because the conductivity of the sample water is greater than 1500 uS/cm and the high salinity control was not used to determine toxic effects to S. capricornutum, these results are not counted as exceedances. | ||||
Data Reference: | Santa Maria Rotation 2007 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. Region 3 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted with the significant effect code SL. SL is defined as the result being significant compared to the negative control based on a statistical test, less than stated the alpha level, AND less than the evaluation threshold. | ||||
Guideline Reference: | Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064 | ||||
Guideline Reference: | SWAMP_Memo_Toxicity_Data_Intrepretation | ||||
Spatial Representation: | The samples were collected at three stations: 312GVT (Orcutt Creek at Brown Road), 312ORC (Orcutt Creek at the Sand Plant), and 312ORB (Orcutt Creek at Brown Road). | ||||
Temporal Representation: | The three samples were collected on June, 27 2007. | ||||
Environmental Conditions: | |||||
QAPP Information: | The SWAMP QAPP (2002) was followed. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 55763 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 21 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Twenty-six samples were collected to evaluate water toxicity. Twenty-one of the 26 samples exhibited significant toxicity. Samples exhibited significant toxicity to survival and reprouction of Ceriodaphnia dubia (17 samples), Hyalella Azteca (1 sample), Atherinops affinis, Cyprinodon variegatus (2 samples) and Pimephales promelas (1 sample) and growth of Thalassiosira (2 samples). | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected at 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, and 312ORS-Orcutt Solomon Creek at Solomon Road. | ||||
Temporal Representation: | The samples were collected from 2007 to 2010 at stations 312ORI and 312ORC and in January, March and September of 2008 at stations 312ORB and 312ORS. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
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LOE ID: | 55740 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 12 | ||||
Number of Exceedances: | 5 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Twelve samples were collected to evaluate water toxicity. Five of the twelve samples exhibited significant toxicity. The toxicity tests included survival of Ceriodaphnia dubia. Statistically significant effects on Ceriodaphnia dubia survival were observed in the following samples: From station 312ORC on 02/3/2009, 3/31/2009, and 8/26/2009 and from station 312GVT on 02/3/2009, and 8/26/2009. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Toxicity was defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Spatial Representation: | The samples were collected at two stations; 312GVT - Orcutt Creek at Brown Road and 312ORC - Orcutt Creek at the Sand Plant. | ||||
Temporal Representation: | The samples were collected in October and December of 2008 and February, March, June and August of 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study and analyzed at the Marine Pollution Studies Laboratory. Sampling and analysis was conducted following the SWAMP QAPrP 2008. This is a SWAMP field crew and lab working under contract for the RB. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
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LOE ID: | 55762 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 9 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Nine samples was collected to evaluate water toxicity. Nine of the nine samples exhibited significant toxicity. One sample was tested using only survival of Hyalella azteca (2/7/09) and this sample did have significant toxic effects. Eight of the toxicity tests included survival of Ceriodaphnia dubia and two of those samples were also tested for toxic effects to survival of Hyalella azteca. Statistically significant effects to Ceriodaphnia dubia were reproted in all eight samples. The sample from 10/15/09 also had toxic effects to Hyalella azteca, but this sample is only counted once. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Toxicity was defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. In the SWAMP data format, a Significance Effect Code of SL denotes toxic test results. | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected at station 312ORC - Orcutt Creek at Sand Plant. | ||||
Temporal Representation: | The sample was collected between January 2008 and October 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 55771 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Three samples were collected to evaluate sediment toxicity. Two of the samples exhibited significant toxicity to the both survival and growth of Hyalella azteca. The samples with significant effects were from sties 312GVT and 312ORC. One sample can have multiple toxicity test results but will be counted only once. One sample is defined as being collected on the same day at the same location with the same lab sample id (if provided). | ||||
Data Reference: | Santa Maria Rotation 2007 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. Region 3 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted with the significant effect code SL. SL is defined as the result being significant compared to the negative control based on a statistical test, less than stated the alpha level, AND less than the evaluation threshold. | ||||
Guideline Reference: | Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064 | ||||
Guideline Reference: | SWAMP_Memo_Toxicity_Data_Intrepretation | ||||
Spatial Representation: | The samples were collected at stations 312GVT (Orcutt Creek at Brown Road), 312ORC (Orcutt Creek at the sand plant), and 312ORB (Orcutt Creek at Black Road). | ||||
Temporal Representation: | The samples were collected in April 2008. | ||||
Environmental Conditions: | |||||
QAPP Information: | The SWAMP QAPP (2002) was followed. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 55772 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Eight samples were collected to evaluate sediment toxicity. Six of the eight samples exhibited significant toxicity to Hyalella Azteca survival and growth. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected at 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, and 312ORS-Orcutt Solomon Creek at Solomon Road. | ||||
Temporal Representation: | The samples were collected in April 2007, 2008 and 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
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LOE ID: | 55765 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Three samples were collected to evaluate sediment toxicity. All three samples exhibited significant toxicity. The toxicity tests included survival and growth of Hyalella azteca. Statistically significant effects on Hyalella azteca survival were observed samples collected on 7/1/2008, 10/15/2008, and 10/29/2009. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Toxicity was defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. In the SWAMP data format, a Significance Effect Code of SL denotes toxic test results. | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected at 312ORC-Orcutt Creek at Sand Plant. | ||||
Temporal Representation: | The samples were collected in July and October 2008 and October 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 55764 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Four samples were collected to evaluate sediment toxicity at two stations. Four of the four samples exhibited significant toxicity. The toxicity tests included survival and growth of Hyalella azteca. Statistically significant effects on Hyalella azteca were observed in all four samples. Samples from station 312ORC on the follwoing dates: 12/3/2008, 3/31/2009, and 6/10/2009 and samples from station 312GVT on 6/10/09. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Toxicity was defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected at Orcutt Creek, stations 312ORC and 312GVT. | ||||
Temporal Representation: | The samples were collected in December of 2008 and March and June of 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study and analyzed at the Marine Pollution Studies Laboratory.SWAMP QAPP, labs, and field staff. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
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LOE ID: | 23945 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPsouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 3 samples exceed the criterion for Toxicity, Hyalella azteca Survival (%) 10 days. Toxicity is defined by SWAMP (2004) as follows: Significant toxicity in the survival endpoint when compared to the negative control based on a statistical test with alpha of less than 5%, and less than the evaluation threshold (both criteria are met). | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Significant reduction of survival of test organism relative to the control (alpha < 0.05) and test organism survival is 20% less than the control survival. | ||||
Guideline Reference: | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312OR1 - Orcutt Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 9/27/2005-8/22/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
82617 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Alachlor |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guidelines for aquatic life protection and for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 55617 | ||||
Pollutant: | Alachlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for ALACHLOR. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for Alachlor is 0.002 mg/L (Title 22 of the California Code of Regulations ). | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55618 | ||||
Pollutant: | Alachlor | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for ALACHLOR. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA national ambient water quality criteria for freshwater aquatic life instantaneous maximum for alachlor is 76 µg/L. | ||||
Guideline Reference: | Water Quality Advisory for Alachlor | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82355 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Aluminum |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | No new data are assessed. This decision has not changed from the 2010 listing cycle
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. A single sample exceeds the water quality objective. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification in favor of placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Only one sample exceeded the Secondary MCL. More data is needed to determine if the water quality objective is exceeded. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 1936 | ||||
Pollutant: | Aluminum | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | One sample was collected on Orcutt Creek in September 2002. This sample was in exceedance of the secondary MCL (SWAMP, 2004). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods. Title 22 MCL = 1 mg/L; Secondary MCL = 0.2 mg/L. |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Orcutt Creek (a tributary to the Santa Maria River). | ||||
Temporal Representation: | One sample was collected on 9/3/2002. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
82509 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Atrazine |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guidelines for aquatic life protection and for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55625 | ||||
Pollutant: | Atrazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for ATRAZINE. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | According to the USEPA Office of Pesticide Programs Ecotoxicity database, the aquatic life 50% effect concentration (EC50) for Atrazine is 43 ug/L based on a 14 day toxicity study of Duckweed (Lemna gibba). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55624 | ||||
Pollutant: | Atrazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for ATRAZINE. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for atrazine is 0.001 mg/L (Title 22 of the California Code of Regulations ). | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
77174 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Azinphos-methyl (Guthion) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the two samples exceed the evaluation guideline for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the two samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55626 | ||||
Pollutant: | Azinphos-methyl (Guthion) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Azinphos Methyl. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The Azinphos methyl (Guthion) criteria for the protection of freshwater aquatic life is 0.01 ug/L (National Recommended Water Quality Criteria, 2009). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
100341 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Bifenthrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 at one line of evidence are necessary to assess listing status but under section 3.6 at least two lines of evidence are necessary to assess listing status and the pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
Four lines of evidence are available in the administrative record to assess this pollutant. Zero of the two water samples exceed the evaluation guideline (Fojut et al. 2012) for aquatic life protection and zero of the five sediment samples exceed the evaluation guideline (Amweg et al., 2005) for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the two water samples and zero of the five sediment samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55633 | ||||
Pollutant: | Bifenthrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Bifenthrin. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for bifenthrin is the median lethal concentration (LC50) of 0.43 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.43 ug/g is the geometric mean of three toxicity LC50 values from Amweg et al. (2005) and one toxicity LC50 value from Amweg and Weston (2007). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Guideline Reference: | Whole-sediment toxicity identification evaluation tools for pyrethroid insecticides: I. piperonyl butoxide addition. Environ. Toxicol. Chem. 26:2389-2396. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
|
|||||
LOE ID: | 55635 | ||||
Pollutant: | Bifenthrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Bifenthrin. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of Bifenthrin does not exceed 0.0006 ug/L. | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: ll. Pyrethroid insecticides. Reviews of Environmental Contamination and Toxicology 216:51-103. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55634 | ||||
Pollutant: | Bifenthrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for BIFENTHRIN. Nine sample results were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of Bifenthrin does not exceed 0.0006 ug/L. | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: ll. Pyrethroid insecticides. Reviews of Environmental Contamination and Toxicology 216:51-103. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55632 | ||||
Pollutant: | Bifenthrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Bifenthrin. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Evaluation Guideline: | The evaluation guideline for bifenthrin is the median lethal concentration (LC50) of 0.43 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.43 ug/g is the geometric mean of three toxicity LC50 values from Amweg et al. (2005) and one toxicity LC50 value from Amweg and Weston (2007). | ||||
Guideline Reference: | Whole-sediment toxicity identification evaluation tools for pyrethroid insecticides: I. piperonyl butoxide addition. Environ. Toxicol. Chem. 26:2389-2396. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82670 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Butylate |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the 45samples exceed the evaluation guideline for aquatic life protection. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the 45 samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55640 | ||||
Pollutant: | Butylate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 45 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 45 samples exceed the criterion for BUTYLATE. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Butylate, 3,800ug/L, is the geometric mean of the result of two 96 hr LC50 toxicity studies of Oncorhynchus mykiss (Rainbow trout). (USEPA Office of Pesticide Programs Ecotoxicity database). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82560 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Carbofuran |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guidelines for aquatic life protection and for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55644 | ||||
Pollutant: | Carbofuran | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for CARBOFURAN. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA national ambient water quality criteria for freshwater aquatic life instantaneous maximum for carbofuran is 0.5 µg/L. | ||||
Guideline Reference: | Hazard Assessment of the Insecticide Carbofuran to Aquatic Organisms in the Sacramento River System | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55643 | ||||
Pollutant: | Carbofuran | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for CARBOFURAN. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for carbofuran is 18 mg/L (Title 22 of the California Code of Regulations). | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82307 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Chlordane |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under section 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants in sediment. The pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the two samples exceed the evaluation guideline (MacDonald et al. 2000) used to interpret the narrative water quality objective for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the two samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55649 | ||||
Pollutant: | Chlordane | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Chlordane, Total. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for Chlordane is 17.6 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
75311 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Chlorophyll-a |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.
Four lines of evidence are available in the administrative record to assess this pollutant. Eight of the 227 samples exceed the evaluation guideline (North Carolina Administrative code, Title 15A) used to interpret the narrative water quality objective for bio-stimulation risk and aquatic life beneficial uses. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Eight of the 227 samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 9722 | ||||
Pollutant: | Chlorophyll-a | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 47 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 47 samples exceed the criterion for Chlorophyll a. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Objective/Criterion Reference: | Water quality standards table | ||||
Evaluation Guideline: | North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L. | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 1/12/2000-2/28/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48575 | ||||
Pollutant: | Chlorophyll-a | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 90 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 90 samples exceed the criterion for Chlorophyll a. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L. | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Guideline Reference: | Water quality standards table | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 51156 | ||||
Pollutant: | Chlorophyll-a | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 45 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 45 samples exceed the criterion for Chlorophyll a. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L. | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Guideline Reference: | Water quality standards table | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 14426 | ||||
Pollutant: | Chlorophyll-a | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 45 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 45 samples exceed the criterion for Chlorophyll a. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain biostimulatory substances in concentrations that promote aquatic growths to the extent that such growths cause nuisance or adversely affect beneficial uses (general objective for biostimulatory substances, Water Quality Control Plan, Central Coast Basin, Chapter III, Section II). | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Objective/Criterion Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Objective/Criterion Reference: | Water quality standards table | ||||
Evaluation Guideline: | North Carolina Administrative code (NCAC), Title 15A - Environmental and Natural Resources, Subchapter 2B-Surface water and wetland standards, Rule 0211-Fresh surface water quality standards for class C waters (Class C is defined as freshwaters protected for secondary recreation, fishing, aquatic life including propagation and survival, and wildlife). Section 3(a) of Rule 0211 applies to all fresh surface waters and states that chlorophyll a is not to exceed 40 ug/L. | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Guideline Reference: | North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 1/27/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
82671 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Chlorothalonil |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guideline for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55651 | ||||
Pollutant: | Chlorothalonil | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Chlorothalonil. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | According to the 2006 USEPA Drinking Water Standards and Health Advisories, the Ten-day Health Advisory for Chlorothalonil is 200 ug/L. | ||||
Guideline Reference: | 2006 edition of the drinking water standards and health advisories. EPA 822-R-03-013 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82413 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Cypermethrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 at one line of evidence are necessary to assess listing status but under section 3.6 at least two lines of evidence are necessary to assess listing status and the pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
Four lines of evidence are available in the administrative record to assess this pollutant. One of the one water samples exceed the evaluation guideline (Fojut et al. 2012) for aquatic life protection and one of the five sediment samples exceed the evaluation guideline (Maund et al., 2002) for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. One of the one water samples and one of the five sediment samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55701 | ||||
Pollutant: | Cypermethrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Cypermethrin. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for cypermethrin is the median lethal concentration (LC50) of 0.3 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.3 ug/g is the geometric mean of LC50 values for cypermethrin from Maund et al. (2002). | ||||
Guideline Reference: | Partitioning, bioavailability, and toxicity of the pyrethroid insecticide cypermethrin in sediments. Environmental Toxicology and Chemistry 21:9-15 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
|
|||||
LOE ID: | 55713 | ||||
Pollutant: | Cypermethrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for CYPERMETHRIN. Nine sample results were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of Cypermethrin; Cypermethrin, total does not exceed 0.0002 ug/L. | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: ll. Pyrethroid insecticides. Reviews of Environmental Contamination and Toxicology 216:51-103. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55700 | ||||
Pollutant: | Cypermethrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for Cypermethrin. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for cypermethrin is the median lethal concentration (LC50) of 0.3 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.3 ug/g is the geometric mean of LC50 values for cypermethrin from Maund et al. (2002). | ||||
Guideline Reference: | Partitioning, bioavailability, and toxicity of the pyrethroid insecticide cypermethrin in sediments. Environmental Toxicology and Chemistry 21:9-15 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55714 | ||||
Pollutant: | Cypermethrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Cypermethrin. One of the two sample results was not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy.An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of Cypermethrin; Cypermethrin, total does not exceed 0.0002 ug/L. | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: ll. Pyrethroid insecticides. Reviews of Environmental Contamination and Toxicology 216:51-103. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
68229 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Dacthal |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | No new data were assessed.
This pollutant is being considered for placement on the CWA section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants in sediment. The pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list. Two lines of evidence are available in the administrative record to assess this pollutant. Based on section 3.6 sediment toxicity was recorded but it cannot be determined if the pollutant is likely to cause or contribute to the toxic effect. Dacthal was also detected in the water column but there in no numeric criteria or guideline that meets the requirement of the Listing Policy. Based on the readily available data and information, the weight of evidence indicates that there is not sufficient justification in favor of placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. A sediment based numeric criteria in sediment or in the water column for dacthal is not available that complies with the requirements of section 6.1.3 of the Policy. 2. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 3. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 1940 | ||||
Pollutant: | Dacthal | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Fish Spawning | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water was sampled at Orcutt Creek (ORC) and in the Santa Maria River (SMA) on two separate occasions (September 2002 and May 2003). Water was toxic at both stations in September 2002 and May 2003 (Anderson, B. 2004). Dacthal was detected in both samples on the Santa Maria River, however no numeric criteria are available. | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Orcutt Creek (a tributary to the Santa Maria River) at two sampling stations. | ||||
Temporal Representation: | Samples were collected on 9/3/2002 and 5/28/2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
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|||||
LOE ID: | 1939 | ||||
Pollutant: | Dacthal | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Fish Spawning | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Chemical monitoring of sediments | ||||
Data Used to Assess Water Quality: | Sediment was sampled at Orcutt Creek (ORC) and in the Santa Maria River (SMA) in 2002 and 2003. Sediment was toxic at both stations in both samples (Anderson, B. 2004). Sediment bulk-phase chemical analyses showed elevated concentrations of dacthal, however no numeric criteria are available. | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Orcutt Creek (a tributary to the Santa Maria River) at two sampling stations. | ||||
Temporal Representation: | Samples were collected on 5/28/2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures for the primary study were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
82728 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Deltamethrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 at one line of evidence are necessary to assess listing status but under section 3.6 at least two lines of evidence are necessary to assess listing status and the pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
Four lines of evidence are available in the administrative record to assess this pollutant. Zero of the 11 water samples exceed the evaluation guideline for aquatic life protection and zero of the five sediment samples exceed the evaluation guideline used to protect aquatic life beneficial uses. However, this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the samples exceed the evaluation guidelines for aquatic life uses and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
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LOE ID: | 55594 | ||||
Pollutant: | Deltamethrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for DELTAMETHRIN. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for deltamethrin is the maximum acceptable toxicant concentration (MATC) of 0.02 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is the geometric mean of the lowest observed effect concentration (LOEC) of 0.03 ug/L and the no observed effect concentration (NOEC) of 0.017 ug/L as determined in a 280 day toxicity study with the fathead minnow, Pimephales promelas. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55601 | ||||
Pollutant: | Deltamethrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Deltamethrin. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for deltamethrin is the median lethal concentration (LC50) of 0.79 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.79 ug/g is the geometric mean of LC50 values for deltamethrin from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
|
|||||
LOE ID: | 55593 | ||||
Pollutant: | Deltamethrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Deltamethrin. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for deltamethrin is the median lethal concentration (LC50) of 0.79 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.79 ug/g is the geometric mean of LC50 values for deltamethrin from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55595 | ||||
Pollutant: | Deltamethrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Deltamethrin. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for deltamethrin is the maximum acceptable toxicant concentration (MATC) of 0.02 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is the geometric mean of the lowest observed effect concentration (LOEC) of 0.03 ug/L and the no observed effect concentration (NOEC) of 0.017 ug/L as determined in a 280 day toxicity study with the fathead minnow, Pimephales promelas. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
81989 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Demeton |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Three lines of evidence are available in the administrative record to assess this pollutant. Zero of the 12 samples exceed the evaluation guideline for aquatic life uses . This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information' unless the beneficial use is not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the 12 samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55604 | ||||
Pollutant: | Demeton | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Demeton. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA National Recomm. WQ criteria, 4-day avg. is 0.1 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55603 | ||||
Pollutant: | Demeton | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Demeton. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA National Recomm. WQ criteria, 4-day avg. is 0.1 ug/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55602 | ||||
Pollutant: | Demeton | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Demeton. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The Demeton criterion continuous concentration for the protection of freshwater aquatic life is 0.1 ug/L (National Recommended Water Quality Criteria, 2009). | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
DECISION ID |
82042 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Dichlorvos |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Six lines of evidence are available in the administrative record to assess this pollutant. Zero of the 12 samples exceed the evaluation guidelines for aquatic life uses and for drinking water . This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information' unless the beneficial use is not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the 12 samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 79299 | ||||
Pollutant: | Dichlorvos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Dichlorvos. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA IRIS one-in-a-million cancer risk estimate from oral exposure for dichlorvos is 0.1 ug/L. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55796 | ||||
Pollutant: | Dichlorvos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Dichlorvos. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for ddvp (dichlorvos) is the maximum acceptable toxicant concentration (MATC) of 7.2 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is calculated as the geometric mean of the lowest observed effect concentration (LOEC) of 10.1 ug/L and the no observed effect concentration (NOEC) of 5.2 ug/L as determined in a 61 day toxicity study with rainbow trout, Oncorhynchus mykiss. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55791 | ||||
Pollutant: | Dichlorvos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Dichlorvos. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for ddvp (dichlorvos) is the maximum acceptable toxicant concentration (MATC) of 7.2 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is calculated as the geometric mean of the lowest observed effect concentration (LOEC) of 10.1 ug/L and the no observed effect concentration (NOEC) of 5.2 ug/L as determined in a 61 day toxicity study with rainbow trout, Oncorhynchus mykiss. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 79298 | ||||
Pollutant: | Dichlorvos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Dichlorvos. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA IRIS one-in-a-million cancer risk estimate from oral exposure for dichlorvos is 0.1 ug/L. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55797 | ||||
Pollutant: | Dichlorvos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Dichlorvos. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA IRIS one-in-a-million cancer risk estimate from oral exposure for dichlorvos is 0.1 ug/L. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55790 | ||||
Pollutant: | Dichlorvos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Dichlorvos. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for ddvp (dichlorvos) is the maximum acceptable toxicant concentration (MATC) of 7.2 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is calculated as the geometric mean of the lowest observed effect concentration (LOEC) of 10.1 ug/L and the no observed effect concentration (NOEC) of 5.2 ug/L as determined in a 61 day toxicity study with rainbow trout, Oncorhynchus mykiss. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
DECISION ID |
82043 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Dimethoate |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Six lines of evidence are available in the administrative record to assess this pollutant. Zero of the 12 samples exceed the evaluation guideline for aquatic life uses and one of the 12 samples exceeds the evaluation guideline for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information' unless the beneficial use is not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the 12 samples exceed the evaluation guideline for aquatic life uses and one of the 12 samples exceeds the evaluation guideline for drinking water. These do not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55799 | ||||
Pollutant: | Dimethoate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Dimethoate. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The California Department of Health Services notification level for dimethoate is 1 µg/L. | ||||
Guideline Reference: | Drinking Water Notification and Response Levels: An Overview | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55813 | ||||
Pollutant: | Dimethoate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Dimethoate. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Dimethoate is the median lethal concentration (LC50; 43 ug/L). This is based on the lowest LC50 value in the Office of Pesticide Programs Ecotoxicity database (stonefly 96 hr test). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55806 | ||||
Pollutant: | Dimethoate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Dimethoate. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Dimethoate is the median lethal concentration (LC50) of 43 ug/L, as determined in a 96 hour toxicity test with the stonefly, Pteronarcys californica (USEPA Office of Pesticide Programs Ecotoxicity database). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55804 | ||||
Pollutant: | Dimethoate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 4 samples exceed the criterion for Dimethoate. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The California Department of Health Services notification level for dimethoate is 1 µg/L. | ||||
Guideline Reference: | Drinking Water Notification Levels and Response Levels | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55805 | ||||
Pollutant: | Dimethoate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Dimethoate. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The California Department of Health Services notification level for dimethoate is 1 µg/L. | ||||
Guideline Reference: | Drinking Water Notification and Response Levels: An Overview | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55807 | ||||
Pollutant: | Dimethoate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Dimethoate. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Dimethoate is the median lethal concentration (LC50) of 43 ug/L, as determined in a 96 hour toxicity test with the stonefly, Pteronarcys californica (USEPA Office of Pesticide Programs Ecotoxicity database). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82094 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Disulfoton |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Six lines of evidence are available in the administrative record to assess this pollutant. Zero of the 21 samples exceed the evaluation guidelines for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information' unless the beneficial use is not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the 21 samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55817 | ||||
Pollutant: | Disulfoton | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Disulfoton. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for disulfoton is 0.7 µg/L. | ||||
Guideline Reference: | 2011 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55822 | ||||
Pollutant: | Disulfoton | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Disulfoton. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for disulfoton is 0.7 µg/L. | ||||
Guideline Reference: | 2011 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55816 | ||||
Pollutant: | Disulfoton | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for DISULFOTON. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for disulfoton is 0.7 µg/L. | ||||
Guideline Reference: | 2011 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55815 | ||||
Pollutant: | Disulfoton | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Disulfoton. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for disulfoton is 0.7 µg/L. | ||||
Guideline Reference: | 2011 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
DECISION ID |
82308 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Endrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under section 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants in sediment. The pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the two samples exceed the evaluation guideline (MacDonald et al. 2000) used to interpret the narrative water quality objective for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the two samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55823 | ||||
Pollutant: | Endrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Endrin. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of endrin is 207 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
99650 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Esfenvalerate/Fenvalerate |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 at one line of evidence are necessary to assess listing status but under section 3.6 at least two lines of evidence are necessary to assess listing status and the pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
Five lines of evidence are available in the administrative record to assess this pollutant. Zero of the 13 water samples exceed the evaluation guideline for aquatic life protection and zero of the five sediment samples exceed the evaluation guideline used to protect aquatic life beneficial uses. However, this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the samples exceed the evaluation guidelines for aquatic life uses and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 55830 | ||||
Pollutant: | Esfenvalerate/Fenvalerate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Fenvalerate. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for esfenvalerate/fenvalerate is the median lethal concentration (LC50) of 1.13 ug/L, as determined in a 96 hour toxicity test using the fathead minnow, Pimephales promelas (USEPA Office of Pesticide Programs Ecotoxicity database). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55831 | ||||
Pollutant: | Esfenvalerate/Fenvalerate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Esfenvalerate. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for esfenvalerate/fenvalerate is the median lethal concentration (LC50) of 1.13 ug/L, as determined in a 96 hour toxicity test using the fathead minnow, Pimephales promelas (USEPA Office of Pesticide Programs Ecotoxicity database). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
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LOE ID: | 55824 | ||||
Pollutant: | Esfenvalerate/Fenvalerate | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Esfenvalerate/Fenvalerate. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for esfenvalerate/fenvalerate is the median lethal concentration (LC50) of 1.5 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 1.5 ug/g is the geometric mean of LC50 values for esfenvalerate/fenvalerate from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
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LOE ID: | 55832 | ||||
Pollutant: | Esfenvalerate/Fenvalerate | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Esfenvalerate. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for esfenvalerate/fenvalerate is the median lethal concentration (LC50) of 1.5 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 1.5 ug/g is the geometric mean of LC50 values for esfenvalerate/fenvalerate from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
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LOE ID: | 55825 | ||||
Pollutant: | Esfenvalerate/Fenvalerate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for ESFENVALERATE. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for esfenvalerate/fenvalerate is the median lethal concentration (LC50) of 1.13 ug/L, as determined in a 96 hour toxicity test using the fathead minnow, Pimephales promelas (USEPA Office of Pesticide Programs Ecotoxicity database). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
99649 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Ethalfluralin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guideline for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 55833 | ||||
Pollutant: | Ethalfluralin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for ETHALFLURALIN. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Ethalfluralin is the maximum acceptable toxicant concentration (MATC) of 0.7 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is the geometric mean of the lowest observed effect concentration (LOEC) of 1.4 ug/L and the no observed effect concentration (NOEC) of 0.4 ug/L as determined in a 50 day toxicity study with the Bluegill sunfish, Lepomis macrochirus. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82095 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Ethoprop |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Three lines of evidence are available in the administrative record to assess this pollutant. Zero of the 12 samples exceed the evaluation guideline for aquatic life uses. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information' unless the beneficial use is not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the 12 samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 55838 | ||||
Pollutant: | Ethoprop | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Ethoprop. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Ethoprop is the maximum acceptable toxicant concentration (MATC) of 1.4 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is calculated as the geometric mean of the lowest observed effect concentration (LOEC) of 2.4 ug/L and the no observed effect concentration (NOEC) of 0.80 ug/L, as determined in a 21 day toxicity study with the water flea, Daphnia magna. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
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LOE ID: | 55839 | ||||
Pollutant: | Ethoprop | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Ethoprop. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Ethoprop is the maximum acceptable toxicant concentration (MATC) of 1.4 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is calculated as the geometric mean of the lowest observed effect concentration (LOEC) of 2.4 ug/L and the no observed effect concentration (NOEC) of 0.80 ug/L, as determined in a 21 day toxicity study with the water flea, Daphnia magna. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
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LOE ID: | 55840 | ||||
Pollutant: | Ethoprop | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Ethoprop. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Ethoprop is the maximum acceptable toxicant concentration (MATC) of 1.4 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is calculated as the geometric mean of the lowest observed effect concentration (LOEC) of 2.4 ug/L and the no observed effect concentration (NOEC) of 0.80 ug/L, as determined in a 21 day toxicity study with the water flea, Daphnia magna. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82775 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Fenpropathrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 at one line of evidence are necessary to assess listing status but under section 3.6 at least two lines of evidence are necessary to assess listing status and the pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the nine water samples exceed the evaluation guideline for aquatic life protection and zero of the three sediment samples exceed the evaluation guideline used to protect aquatic life beneficial uses. However, this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the samples exceed the evaluation guidelines for aquatic life uses and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55847 | ||||
Pollutant: | Fenpropathrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for FENPROPATHRIN. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Fenpropathrin is the median lethal concentration (LC50; 2.2 ug/L) based on a 96 hour toxicity study of Bluegill sunfish (Lepomis macrochirus). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55846 | ||||
Pollutant: | Fenpropathrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Fenpropathrin. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for fenpropathrin is the median lethal concentration (LC50) of 1 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 1 ug/g is the geometric mean of LC50 values for fenpropathrin from Ding et al. ( 2011). | ||||
Guideline Reference: | Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83¿92. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
DECISION ID |
82361 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Fipronil |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under section 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants in sediment. The pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the one samples exceed the evaluation guideline (Maul et al. 2008) used to interpret the narrative water quality objective for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the one samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55848 | ||||
Pollutant: | Fipronil | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Santa Maria River Estuary to determine beneficial use support and results are as follows: A total of 3 samples were collected, however 2 of the non-detect sample results were compared to the evaluation guideline and the OC Normalized method detection limit result was above the guideline and therefore could not be quantified with the level of certainty required by the Listing Policy. Zero of the remaining 1 quantifiable sample results were exceeding the evaluation guideline. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for fipronil is the median lethal concentration (LC50) of 0.13 ug/g and is normalized by the percentage of organic carbon in the sediment sample (Maul et al. 2008). | ||||
Guideline Reference: | Effect of sediment-associated pyrethroids, fipronil, and metabolites on Chironomus tentans growth rate, body mass, condition index, immobilization, and survival. Environ. Toxicol. Chem. 27(12):2582-2590. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
DECISION ID |
82096 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Fipronil Sulfide |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 at one line of evidence are necessary to assess listing status but under section 3.6 at least two lines of evidence are necessary to assess listing status and the pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
One line of evidence is available in the administrative record to assess this pollutant. The single sample did not exceed the evaluation guideline for aquatic life protection. However, this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. The single sample did not exceed the evaluation guideline for aquatic life uses and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55849 | ||||
Pollutant: | Fipronil Sulfide | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: A total of 3 samples were collected, however 2 of the non-detect sample results were compared to the evaluation guideline and the OC Normalized method detection limit result was above the guideline and therefore could not be quantified with the level of certainty required by the Listing Policy. Zero of the remaining 1 quantifiable sample results were exceeding the evaluation guideline. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for fipronil sulfide is the median lethal concentration (LC50) of 0.16 ug/g and is normalized by the percentage of organic carbon in the sediment sample (Maul et al. 2008). | ||||
Guideline Reference: | Effect of sediment-associated pyrethroids, fipronil, and metabolites on Chironomus tentans growth rate, body mass, condition index, immobilization, and survival. Environ. Toxicol. Chem. 27(12):2582-2590. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
DECISION ID |
82147 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Fipronil Sulfone |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 at one line of evidence are necessary to assess listing status but under section 3.6 at least two lines of evidence are necessary to assess listing status and the pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the three samples exceed the evaluation guideline for aquatic life protection. However, this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the three samples exceed the evaluation guideline for aquatic life uses and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55741 | ||||
Pollutant: | Fipronil Sulfone | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Fipronil sulfone. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for fipronil sulfone is the median lethal concentration (LC50) of 0.12 ug/g and is normalized by the percentage of organic carbon in the sediment sample (Maul et al. 2008). | ||||
Guideline Reference: | Effect of sediment-associated pyrethroids, fipronil, and metabolites on Chironomus tentans growth rate, body mass, condition index, immobilization, and survival. Environ. Toxicol. Chem. 27(12):2582-2590. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
DECISION ID |
82721 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Hexazinone |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guideline for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55742 | ||||
Pollutant: | Hexazinone | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for HEXAZINONE. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | According to the USEPA Office of Pesticide Programs Ecotoxicity database, the aquatic life EC50 for Hexazinone is 6.8 ug/L based on a 120 hour toxicity study of green algae (selenastrum capricornutum). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82722 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Iprodione |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guideline for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55743 | ||||
Pollutant: | Iprodione | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Iprodione. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for Iprodione is 280 µg/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water with 0.04 mg/kg/day as the reference dose. An additional uncertainty factor of 10 is used for Class C carcinogens. | ||||
Guideline Reference: | IRIS Summary for Iprodione | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
69855 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Iron |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. A single sample exceeds the water quality objective. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification in favor of placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Only one sample exceeded the Title 22 Secondary MCL. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using Table 3.1. More data is needed to determine if the water quality objective is exceeded. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 1937 | ||||
Pollutant: | Iron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | One sample was collected on Orcutt Creek in September 2002 (SWAMP, 2004). This sample was in exceedance of the secondary MCL. | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods. Title 22 Secondary MCL = 0.3 mg/L. |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Orcutt Creek (a tributary to the Santa Maria River). | ||||
Temporal Representation: | One sample was collected on 9/3/2002. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
82309 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under section 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants in sediment. The pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the two samples exceed the evaluation guideline (MacDonald et al. 2000) used to interpret the narrative water quality objective for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the two samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55744 | ||||
Pollutant: | Lindane/gamma Hexachlorocyclohexane (gamma-HCH) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for HCH, gamma. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for Lindane (gamma-HCH) is 4.99 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
81723 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Manganese |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. A single sample exceeds the water quality objective. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification in favor of placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Only one sample exceeded the Title 22 Secondary MCL. The sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using Table 3.1. More data is needed to determine if the water quality objective is exceeded. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 1938 | ||||
Pollutant: | Manganese | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | One sample was collected on Orcutt Creek in September 2002 (SWAMP, 2004). This sample was in exceedance of the secondary MCL. | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods. Title 22 Secondary MCL = 0.05 mg/L. |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Orcutt Creek (a tributary to the Santa Maria River). | ||||
Temporal Representation: | One sample was collected on 9/3/2002. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
82148 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Methidathion |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Four lines of evidence are available in the administrative record to assess this pollutant. Zero of the 11 samples exceed the evaluation guidelines for aquatic life uses and for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information' unless the beneficial use is not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the 11 samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55755 | ||||
Pollutant: | Methidathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for METHIDATHION. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Methidathion is the maximum acceptable toxicant concentration (MATC) of 0.86 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is calculated as the geometric mean of the lowest observed effect concentration (LOEC) of 1.13 ug/L and the no observed effect concentration (NOEC) of 0.66 ug/L, as determined in a 21 day toxicity study with the water flea, Daphnia magna. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55753 | ||||
Pollutant: | Methidathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for METHIDATHION. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for methidathion is 0.7 µg/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55756 | ||||
Pollutant: | Methidathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Methidathion. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Methidathion is the maximum acceptable toxicant concentration (MATC) of 0.86 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is calculated as the geometric mean of the lowest observed effect concentration (LOEC) of 1.13 ug/L and the no observed effect concentration (NOEC) of 0.66 ug/L, as determined in a 21 day toxicity study with the water flea, Daphnia magna. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55754 | ||||
Pollutant: | Methidathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Methidathion. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for methidathion is 0.7 µg/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82776 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Methyl Parathion |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 at one line of evidence are necessary to assess listing status but under section 3.6 at least two lines of evidence are necessary to assess listing status and the pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
Ten lines of evidence are available in the administrative record to assess this pollutant. Zero of the 21 water samples exceed the evaluation guidelines for aquatic life protection and drinking water. Zero of the five sediment samples exceed the evaluation guideline used to protect aquatic life beneficial uses. However, this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55758 | ||||
Pollutant: | Methyl Parathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Parathion, methyl. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for Parathion, methyl is 1.8 µg/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55769 | ||||
Pollutant: | Methyl Parathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Parathion, methyl. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The California Department of Fish and Game instantaneous criteria for Methyl Parathion is 0.08 ug/L. | ||||
Guideline Reference: | Hazard Assessment of the Insecticide Methyl Parathion to Aquatic Organisms in the Sacramento River System | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55775 | ||||
Pollutant: | Methyl Parathion | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Methyl parathion. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for methyl parathion is the median lethal concentration (LC50) of 6 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 6 ug/g is the geometric mean of LC50 values for methyl parathion from Ding et al. (2011). | ||||
Guideline Reference: | Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83¿92. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
|
|||||
LOE ID: | 55767 | ||||
Pollutant: | Methyl Parathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Parathion, methyl. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The California Department of Fish and Game (now called the California Department of Fish and Wildlife) instantaneous criteria for Methyl Parathion is 0.08 ug/L. | ||||
Guideline Reference: | Hazard Assessment of the Insecticide Methyl Parathion to Aquatic Organisms in the Sacramento River System | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55757 | ||||
Pollutant: | Methyl Parathion | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Methyl Parathion. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for methyl parathion is the median lethal concentration (LC50) of 6 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 6 ug/g is the geometric mean of LC50 values for methyl parathion from Ding et al. (2011). | ||||
Guideline Reference: | Toxicity of Sediment-Associated Pesticides to Chironomus dilutus and Hyalella azteca. Arch. Environ. Contam. Toxicol. 61:83¿92. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55768 | ||||
Pollutant: | Methyl Parathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Parathion, methyl. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The California Department of Fish and Game (now called the California Department of Fish and Wildlife) instantaneous criteria for Methyl Parathion is 0.08 ug/L. | ||||
Guideline Reference: | Hazard Assessment of the Insecticide Methyl Parathion to Aquatic Organisms in the Sacramento River System | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55766 | ||||
Pollutant: | Methyl Parathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Parathion, methyl. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The California Department of Fish and Game (now called California Department of Fish and Wildlife) instantaneous criteria for Methyl Parathion is 0.08 ug/L. | ||||
Guideline Reference: | Hazard Assessment of the Insecticide Methyl Parathion to Aquatic Organisms in the Sacramento River System. California Department of Fish and Game. Environmental Services Division. Administrative Report 92-1 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55760 | ||||
Pollutant: | Methyl Parathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Parathion, methyl. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for Paration, methyl is 1.8 µg/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55759 | ||||
Pollutant: | Methyl Parathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Parathion, methyl. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for Parathion, methyl is 1.8 µg/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55761 | ||||
Pollutant: | Methyl Parathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Parathion, methyl. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for phorate is 1.8 µg/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82561 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Molinate |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guidelines for aquatic life protection and for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55776 | ||||
Pollutant: | Molinate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for MOLINATE. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for molinate is 20 ug/L (Title 22 of the California Code of Regulations). | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55777 | ||||
Pollutant: | Molinate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for MOLINATE. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Molinate is the maximum acceptable toxicant concentration (MATC) of 600 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is the geometric mean of the lowest observed effect concentration (LOEC) of 900 ug/L and the no observed effect concentration (NOEC) of 380 ug/L as determined in a 21 day toxicity study with the water flea, Daphnia magna. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82723 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Napropamide |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guideline for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55778 | ||||
Pollutant: | Napropamide | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for NAPROPAMIDE. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Napropamide is the median lethal concentration (LC50; 12000 ug/L) based on a 96 hour toxicity study of Bluegill sunfish (Lepomis macrochirus). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82768 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Nitrogen, Nitrite |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the 49 samples exceed the water quality objective for agricultural uses. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the 49 samples exceed the water quality objective and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 51139 | ||||
Pollutant: | Nitrogen, Nitrite | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 49 samples exceed the criterion for Nitrite as N. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. In addition, waters used for irrigation and livestock watering shall not exceed concentrations for those chemicals listed in Table 3-4 (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). Table 3-4 (page III-9) lists the maximum concentration for nitrite for livestock watering is 10 mg/L. | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
DECISION ID |
75233 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Oxygen, Dissolved |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.
Eleven lines of evidence are available in the administrative record to assess this pollutant. Fifteen of the 241 samples exceeded the water quality objectives for dissolved oxygen in Cold Freshwater Habitats. The Basin Plan general water quality objective for oxygen saturation states that the median value shall not fall below 85% saturation. However, the oxygen saturation objective is only applied ¿for waters not mentioned by a specific beneficial use¿¿ and this water body is designated for Cold Freshwater Habitats. Therefore, the use support rating for oxygen saturation is set at Insufficient Information. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Fifteen of the 241 samples exceeded the water quality objectives for dissolved oxygen and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 48689 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 90 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 6 of 90 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 47875 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Region 3 - Central Coast Region staff assessed R3 public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 6 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/22/2008-10/29/2009 3:02:36 PM. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | A QAPP was not specifically written for this project. However, staff conducting data collection and laboratory analysis are also SWAMP contractors. All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in | ||||
QAPP Information Reference(s): | 2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA | ||||
|
|||||
LOE ID: | 51174 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 49 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time (Basin Plan). | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 13572 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 8 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 6/27/2000-9/7/2000. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 13554 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 42 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 42 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/3/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 51175 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 15 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 15 of 49 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Median values should not fall below 85% saturation as a result of controllable water quality conditions (Basin Plan). | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 48690 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 90 | ||||
Number of Exceedances: | 20 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 20 of 90 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Median values should not fall below 85% saturation as a result of controllable water quality conditions (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 14427 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 46 | ||||
Number of Exceedances: | 8 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 8 of 46 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: Median values should not fall below 85% saturation as a result of controllable water quality conditions. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 1/27/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 13573 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for Orcutt Creek to determine beneficial use support and results are as follows: 4 of 8 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: Median values should not fall below 85% saturation as a result of controllable water quality conditions. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 6/27/2000-9/7/2000. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 13555 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 42 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 7 of 42 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: Median values should not fall below 85% saturation as a result of controllable water quality conditions. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/3/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 14243 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 46 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 46 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, Cold Water Habitat Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: The dissolved oxygen concentration shall not be reduced below 7.0 mg/l at any time. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 1/27/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
82360 |
Region 3 |
Orcutt Creek |
||
Pollutant: | PCBs (Polychlorinated biphenyls) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under section 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants in sediment. The pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the two samples exceed the evaluation guideline (MacDonald et al. 2000) used to interpret the narrative water quality objective for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the two samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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|||||
LOE ID: | 55793 | ||||
Pollutant: | PCBs (Polychlorinated biphenyls) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for PCB, Total. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of PCBs is 676 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82769 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Parathion |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the two samples exceed the evaluation guideline for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the two samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 55792 | ||||
Pollutant: | Parathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Parathion, Ethyl. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The criterion continuous concentration for Parathion, Ethyl is 0.013 ug/l from the National Recommended Water Quality Criteria. Parathion is synonymous with diethyl parathion and parathion-ethyl | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82770 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Pentachlorobenzene (PCNB) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guideline for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55794 | ||||
Pollutant: | Pentachlorobenzene (PCNB) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for PCNB. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The California Department of Health Services archived Advisory Level for Pentachloronitrobenzene is 20 ug/L. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
81988 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Permethrin, total |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 at least one line of evidence are necessary to assess listing status but under section 3.6 at least two lines of evidence are necessary to assess listing status and the pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the section 303(d) List.
Five lines of evidence are available in the administrative record to assess this pollutant. Two LOEs summarize water samples. One of the one water samples exceed the evaluation guideline for aquatic life protection (note LOE 55801 states that zero of zero samples exceed. This is because the nine samples are reported as 'non-detect' and the laboratories reporting limit is above the evaluation guideline so it cannot be determined if there was an exceedance). Two LOEs summarize Permethrin sediment samples. One of the five sediment samples exceed the evaluation guideline used to protect aquatic life beneficial uses and this sample also resulted in a significant toxic effect to invertebrate test organisms. However, these sample sizes are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. One water sample and one sediment sample exceed the evaluation guidelines for aquatic life uses but this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
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LOE ID: | 55802 | ||||
Pollutant: | Permethrin, total | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Permethrin. A second sample was collected in Orcutt Creek but is not included in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of permethrin does not exceed 0.002 ug/L and if the 1-h average concentration does not exceed 0.01 ug/L. In this assessment, the 4-day value was used. Mixtures of permethrin and other pyrethroids should be considered in an additive manner. (Fojut et al. 2012) | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: ll. Pyrethroid insecticides. Reviews of Environmental Contamination and Toxicology 216:51-103. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
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|||||
LOE ID: | 55764 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Four samples were collected to evaluate sediment toxicity at two stations. Four of the four samples exhibited significant toxicity. The toxicity tests included survival and growth of Hyalella azteca. Statistically significant effects on Hyalella azteca were observed in all four samples. Samples from station 312ORC on the follwoing dates: 12/3/2008, 3/31/2009, and 6/10/2009 and samples from station 312GVT on 6/10/09. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Toxicity was defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected at Orcutt Creek, stations 312ORC and 312GVT. | ||||
Temporal Representation: | The samples were collected in December of 2008 and March and June of 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study and analyzed at the Marine Pollution Studies Laboratory.SWAMP QAPP, labs, and field staff. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
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|||||
LOE ID: | 55795 | ||||
Pollutant: | Permethrin, total | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 2 samples exceed the criterion for Permethrin. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for permethrin is the median lethal concentration (LC50) of 8.9 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 8.9 ug/g is the geometric mean of LC50 values for permethrin from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55801 | ||||
Pollutant: | Permethrin, total | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for PERMETHRIN. Nine sample results were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of permethrin does not exceed 0.002 ug/L and if the 1-h average concentration does not exceed 0.01 ug/L. For this assessment, the 4-day average concentration was used. Mixtures of permethrin and other pyrethroids should be considered in an additive manner. (Fojut et al. 2012) | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: ll. Pyrethroid insecticides. Reviews of Environmental Contamination and Toxicology 216:51-103. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
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|||||
LOE ID: | 55800 | ||||
Pollutant: | Permethrin, total | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Permethrin. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for permethrin is the median lethal concentration (LC50) of 8.9 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 8.9 ug/g is the geometric mean of LC50 values for permethrin from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
DECISION ID |
82149 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Phorate |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Six lines of evidence are available in the administrative record to assess this pollutant. Zero of the 12 samples exceed the evaluation guidelines for aquatic life uses and for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information' unless the beneficial use is not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the 12 samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55821 | ||||
Pollutant: | Phorate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Phorate. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The national health advisory level for phorate is 0.7 µg/L. This was calculated using the no-adverse-effect dosage of 0.01 mg/kg, assuming 70 kg body weight, 2 liters/day water consumption, 20% relative source contribution from drinking water, and divided by 100 for a factor of safety. | ||||
Guideline Reference: | National Academy of Sciences - Volume I Drinking Water and Health | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55826 | ||||
Pollutant: | Phorate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Phorate. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The national health advisory level for phorate is 0.7 µg/L. This was calculated using the no-adverse-effect dosage of 0.01 mg/kg, assuming 70 kg body weight, 2 liters/day water consumption, 20% relative source contribution from drinking water, and divided by 100 for a factor of safety. | ||||
Guideline Reference: | National Academy of Sciences - Volume I Drinking Water and Health | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55812 | ||||
Pollutant: | Phorate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Phorate. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Phorate is the median lethal concentration (LC50) of 2 ug/L, as determined in a 96 hour toxicity study of bluegill sunfish (Lepomis macrochirus) (USEPA Office of Pesticide Programs Ecotoxicity database). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55819 | ||||
Pollutant: | Phorate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Phorate. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Phorate is the median lethal concentration (LC50; 2 ug/L). This is based on a 96 hour toxicity study of bluegill sunfish (Lepomis macrochirus) | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55818 | ||||
Pollutant: | Phorate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Phorate. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Phorate is the median lethal concentration (LC50; 2 ug/L). This is based on a 96 hour toxicity study of Bluegill sunfish (Lepomis macrochirus) | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55820 | ||||
Pollutant: | Phorate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Phorate. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The National Academy of Sciences health advisory for phorate is 0.7 µg/L. This was calculated using the no-adverse-effect dosage of 0.01 mg/kg, assuming 70 kg body weight, 2 liters/day water consumption, 20% relative source contribution from drinking water, and divided by 100 for a factor of safety. | ||||
Guideline Reference: | National Academy of Sciences - Volume I Drinking Water and Health | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
DECISION ID |
82205 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Phosmet |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Four lines of evidence are available in the administrative record to assess this pollutant. Zero of the 11 samples exceed the evaluation guidelines for aquatic life uses and for drinking water . This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information' unless the beneficial use is not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the 11 samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55829 | ||||
Pollutant: | Phosmet | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for PHOSMET. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for phosmet is 140 µg/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55828 | ||||
Pollutant: | Phosmet | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Phosmet. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | According to the USEPA Office of Pesticide Programs Ecotoxicity database, the aquatic life EC50 for Phosmet is 5.6 ug/L. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55834 | ||||
Pollutant: | Phosmet | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Phosmet. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for phosmet is 140 µg/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55827 | ||||
Pollutant: | Phosmet | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for PHOSMET. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | According to the USEPA Office of Pesticide Programs Ecotoxicity database, the aquatic life EC50 for Phosmet is 5.6 ug/L. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82562 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Prometryn |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guidelines for aquatic life protection and for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55835 | ||||
Pollutant: | Prometryn | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for PROMETRYN. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | According to the USEPA Office of Pesticide Programs Ecotoxicity database, the aquatic life EC50 for Prometryn is 1 ug/L. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55836 | ||||
Pollutant: | Prometryn | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for PROMETRYN. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for prometryn is 28 µg/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
99651 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Propanil (DCPA mono- and di-acid degrad) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guideline for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55837 | ||||
Pollutant: | Propanil (DCPA mono- and di-acid degrad) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for PROPANIL. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Propanil is the maximum acceptable toxicant concentration (MATC) of 0.5 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is calculated as the geometric mean of the lowest observed effect concentration (LOEC) of 0.6 ug/L and the no observed effect concentration (NOEC) of 0.4 ug/L, as determined in a 60 day toxicity study with the fathead minnow, Pimephales promelas. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82819 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Propiconazole |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guideline for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55841 | ||||
Pollutant: | Propiconazole | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Propiconazole. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Propiconazole is the median lethal concentration (LC50; 830 ug/L) based on a 96 toxicity study of Rainbow trout (Oncorhynchus mykiss). | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
99695 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Resmethrin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guideline for aquatic drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55842 | ||||
Pollutant: | Resmethrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for RESMETHRIN. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for Resmethrin is 210 µg/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82615 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Simazine |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guidelines for aquatic life protection and for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55844 | ||||
Pollutant: | Simazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for SIMAZINE. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA national ambient water quality criteria for freshwater aquatic life instantaneous maximum for simazine is 10 µg/L. | ||||
Guideline Reference: | National Recommended Water Quality Criteria. United States Environmental Protection Agency. Office of Water. Office of Science and Technology | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55843 | ||||
Pollutant: | Simazine | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for SIMAZINE. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for simazine is 0.004 mg/L (Title 22 of the California Code of Regulations). | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82616 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Thiobencarb/Bolero |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guidelines for aquatic life protection and for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guidelines and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55853 | ||||
Pollutant: | Thiobencarb/Bolero | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for THIOBENCARB. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Thiobencarb is the maximum acceptable toxicant concentration (MATC) of 1.4 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is calculated as the geometric mean of the lowest observed effect concentration (LOEC) of 2.0 ug/L and the no observed effect concentration (NOEC) of 1.0 ug/L, as determined in a 21 day toxicity study with the water flea, Daphnia magna. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55852 | ||||
Pollutant: | Thiobencarb/Bolero | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for THIOBENCARB. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The California Maximum Contaminant Level for thiobencarb is 0.07 mg/L (Title 22 of the California Code of Regulations). | ||||
Objective/Criterion Reference: | Maximum Contaminant Levels for organic and inorganic chemicals. CCR Title 22 | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82821 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Trifluralin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guideline for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55773 | ||||
Pollutant: | Trifluralin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for TRIFLURALIN. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for Trifluralin is the maximum acceptable toxicant concentration (MATC) of 1.58 ug/L. The MATC (or Chronic Value as defined in USEPA 1985, P20 section F) is calculated as the geometric mean of the lowest observed effect concentration (LOEC) of 2.18 ug/L and the no observed effect concentration (NOEC) of 1.14 ug/L as determined in a 48 day toxicity study with rainbow trout, Oncorhynchus mykiss. Threshold values (LOEC and NOEC) are from USEPA Office of Pesticide Programs Ecotoxicity database. | ||||
Guideline Reference: | OPP Pesticide Ecotoxicity Database. | ||||
Guideline Reference: | Guidelines for Deriving Numerical National Water Quality Criteria for the Protection of Aquatic Organisms and Their Uses | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82256 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Vinclozolin |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guideline for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of the nine samples exceed the evaluation guideline and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55780 | ||||
Pollutant: | Vinclozolin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for Vinclozolin. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | Based on USEPA IRIS reference dose (RfD) as a drinking water level, the drinking water health advisory level for Vinclozolin is 180 µg/L. This was calculated assuming 70 kg body weight, 2 liters/day water consumption, and 20% relative source contribution from drinking water. An additional uncertainty factor of 10 is used for Class C carcinogens. | ||||
Guideline Reference: | IRIS Database Calculations (summary) | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
75235 |
Region 3 |
Orcutt Creek |
||
Pollutant: | pH |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status.
Thirty lines of evidence are available in the administrative record to assess this pollutant. Five beneficial uses are assessed. Eight of the 238 samples exceed the water quality objective for Agriculture, six of the 238 samples exceed the water quality objectives for Cold Freshwater Habitats, and 12 of the 238 samples exceed the water quality objectives for Drinking Water and Recreation. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Eight of the 238 samples exceed the water quality objective for Agriculture, six of the 238 samples exceed the water quality objectives for Cold Freshwater Habitats, and 12 of the 238 samples exceed the water quality objectives for Drinking Water and Recreation. These do not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 11715 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 39 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 39 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/3/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 47876 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Region 3 - Central Coast Region staff assessed R3 public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 6 samples exceed the criterion for pH. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Region Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/22/2008-10/29/2009 3:02:36 PM. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | A QAPP was not specifically written for this project. However, staff conducting data collection and laboratory analysis are also SWAMP contractors. All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in | ||||
QAPP Information Reference(s): | 2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA | ||||
|
|||||
LOE ID: | 11716 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 39 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 39 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/3/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11446 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 6/27/2000-9/7/2000. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48692 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 90 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 90 samples exceed the criterion for pH. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall not be depressed below 7.0 or raised above 8.5 (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 47877 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Region 3 - Central Coast Region staff assessed R3 public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 6 samples exceed the criterion for pH. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall not be depressed below 7.0 or raised above 8.5 (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/22/2008-10/29/2009 3:02:36 PM. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | A QAPP was not specifically written for this project. However, staff conducting data collection and laboratory analysis are also SWAMP contractors. All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in | ||||
QAPP Information Reference(s): | 2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA | ||||
|
|||||
LOE ID: | 14441 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 46 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 46 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan, Central Coast Basin, General Objective, Chapter III, Section II.A.2 General Objectives for all Inland Surface Waters, Enclosed Bays and Estuaries states the following: For waters not mentioned by a specific beneficial use, the pH value shall not be depressed below 7.0 or raised above 8.5. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 1/27/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 51176 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 49 samples exceed the criterion for pH. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall not be depressed below 7.0 or raised above 8.5 (Basin Plan). | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 14442 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 46 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 46 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 1/27/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48706 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 90 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 4 of 90 samples exceed the criterion for pH. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall not be depressed below 6.5 or raised above 8.3 (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 11717 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 39 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 39 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/3/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 47878 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Region 3 - Central Coast Region staff assessed R3 public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 6 samples exceed the criterion for pH. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall not be depressed below 6.5 or raised above 8.3 (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/22/2008-10/29/2009 3:02:36 PM. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | A QAPP was not specifically written for this project. However, staff conducting data collection and laboratory analysis are also SWAMP contractors. All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in | ||||
QAPP Information Reference(s): | 2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA | ||||
|
|||||
LOE ID: | 11447 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file3 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file1 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin, Section II.A.2. Municipal and Domestic Supply Objectives, Section II.A.2.a states the following: The pH value shall neither be depressed below 6.5 or raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 6/27/2000-9/7/2000. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 50897 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 49 samples exceed the criterion for pH. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall not be depressed below 6.5 or raised above 8.3 (Basin Plan). | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 47880 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Region 3 - Central Coast Region staff assessed R3 public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 6 samples exceed the criterion for pH. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/22/2008-10/29/2009 3:02:36 PM. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | A QAPP was not specifically written for this project. However, staff conducting data collection and laboratory analysis are also SWAMP contractors. All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in | ||||
QAPP Information Reference(s): | 2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA | ||||
|
|||||
LOE ID: | 14456 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 46 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 46 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 1/27/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11463 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 6/27/2000-9/7/2000. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11443 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 39 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 39 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/3/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 51053 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 49 samples exceed the criterion for pH. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan). | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 48708 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 90 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 4 of 90 samples exceed the criterion for pH. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 51051 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 49 samples exceed the criterion for pH. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan). | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
|
|||||
LOE ID: | 11718 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 39 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Santa Maria (SantaMaria) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 39 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/3/2000-4/6/2001. Santa Maria watershed is one of five annual rotation areas that are monitored for conventional pollutants by CCAMP staff monthly for one year. Toxicity monitoring is conducted twice during the rotation year (winter and summer) at a subset of sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11462 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 6/27/2000-9/7/2000. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 48707 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 90 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 4 of 90 samples exceed the criterion for pH. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 14443 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 46 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 46 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: pH value shall neither be depressed below 6.5 nor raised above 8.3. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 1/27/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 47879 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Region 3 - Central Coast Region staff assessed R3 public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 6 samples exceed the criterion for pH. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The pH value shall neither be depressed below 6.5 nor raised above 8.3 (Basin Plan). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 2/22/2008-10/29/2009 3:02:36 PM. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | A QAPP was not specifically written for this project. However, staff conducting data collection and laboratory analysis are also SWAMP contractors. All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in | ||||
QAPP Information Reference(s): | 2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA | ||||
|
|||||
LOE ID: | 48691 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 90 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 90 samples exceed the criterion for pH. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Region Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 4 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/30/2007-3/30/2010. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 14440 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 46 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCWQP Southern Area Ag-Waiver Monitoring (R3_CMPSouth) data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 46 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc toxicity data | ||||
Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ 312ORI-Orcutt Solomon Creek at Highway 1, 312ORC-Orcutt Solomon Creek u/s Santa Maria River] | ||||
Temporal Representation: | Data was collected over the time period 1/27/2005-12/14/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11445 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Diurnal Dissolved Oxygen Sampling (DO) data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 8 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: CCAMP Water Quality Data_file1 | ||||
Final Data File used for assessment: CCAMP Water Quality Data_file2 | |||||
Final Data File used for assessment: CCAMP Water Quality Data_file3 | |||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Waterboard Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 3 monitoring sites [ 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 6/27/2000-9/7/2000. Diurnal monitoring conducted in summer months at all CCAMP monitoring sites. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 51140 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 49 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 49 samples exceed the criterion for pH. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Waters shall not contain concentrations of chemical constituents in amounts which adversely affect the agricultural beneficial use. Interpretation of adverse effect shall be as derived from the University of California Agricultural Extension Service guidelines provided in Table 3-3 (Central Coast Region Basin Plan, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). In Table 3-3 of the Basin Plan (page III-8), water quality guidelines state that severe problems may occur when pH is greater than 8.4 or less than 6.5 in irrigation supply water. | ||||
Objective/Criterion Reference: | Data for Various Pollutants in Westside San Joaquin Water Quality Coalition, 2004-2009. | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
DECISION ID |
82668 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Carbaryl |
Final Listing Decision: | List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2016) |
Revision Status | Original |
Sources: | A Source Unknown |
Expected TMDL Completion Date: | 2027 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the nine samples exceed the evaluation guidelines for drinking water. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. However, two of the nine samples exceed the evaluation guidelines for aquatic life protection and this use is not supported. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Two of the nine samples exceed the evaluation guidelines for aquatic life protection and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55641 | ||||
Pollutant: | Carbaryl | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for CARBARYL. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for carbaryl is 40 µg/L. | ||||
Guideline Reference: | Compilation of Water Quality Goals | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55642 | ||||
Pollutant: | Carbaryl | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 9 samples exceed the criterion for CARBARYL. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA national ambient water quality criteria for freshwater aquatic life instantaneous maximum for carbaryl is 0.02 µg/L. | ||||
Guideline Reference: | Compilation of Water Quality Goals | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82362 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Cyfluthrin |
Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Agriculture | Urban Runoff/Storm Sewers |
TMDL Name: | Santa Maria River Watershed Toxicity and Pesticides TMDL |
TMDL Project Code: | 1081 |
Date TMDL Approved by USEPA: | 08/31/2015 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 at one line of evidence are necessary to assess listing status but under section 3.6 at least two lines of evidence are necessary to assess listing status and the pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
Three lines of evidence are available in the administrative record to assess this pollutant. Two of the two water samples exceed the evaluation guideline (Fojut et al. 2012) for aquatic life protection. Zero of the five sediment samples exceed the evaluation guideline (Amweg et al., 2005) for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for adding this water segment-pollutant combination to the CWA section 303(d) List. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Two of the two water samples exceed the evaluation guidelines and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. The Santa Maria River Watershed Toxicity and Pesticide TMDL has been approved by USEPA on October 31, 2015. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.
There is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55686 | ||||
Pollutant: | Cyfluthrin | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for Cyfluthrin. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of cyfluthrin does not exceed 0.00005 ug/L and if the 1-h average concentration does not exceed 0.0003 ug/L. For this assessment the 4-day average guideline was used. Mixtures of cyfluthrin and other pyrethroids should be considered in an additive manner. (Fojut et al. 2012) | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: ll. Pyrethroid insecticides. Reviews of Environmental Contamination and Toxicology 216:51-103. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55675 | ||||
Pollutant: | Cyfluthrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Cyfluthrin. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for cyfluthrin is the median lethal concentration (LC50) of 1.1 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 1.1 ug/g is the geometric mean of LC50 values for cyfluthrin from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55685 | ||||
Pollutant: | Cyfluthrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Cyfluthrin. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for cyfluthrin is the median lethal concentration (LC50) of 1.1 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 1.1 ug/g is the geometric mean of LC50 values for cyfluthrin from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
DECISION ID |
82412 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Cyhalothrin, Lambda |
Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Agriculture | Urban Runoff/Storm Sewers |
TMDL Name: | Santa Maria River Watershed Toxicity and Pesticides TMDL |
TMDL Project Code: | 1081 |
Date TMDL Approved by USEPA: | 08/31/2015 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 at one line of evidence are necessary to assess listing status but under section 3.6 at least two lines of evidence are necessary to assess listing status and the pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
Four lines of evidence are available in the administrative record to assess this pollutant. Two of the two water samples exceed the evaluation guideline (Fojut et al. 2012) for aquatic life protection. Zero of the five sediment samples exceed the evaluation guideline (Amweg et al., 2005) for aquatic life protection. This sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for adding this water segment-pollutant combination to the CWA section 303(d) List. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Two of the two water samples exceed the evaluation guidelines and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. The Santa Maria River Watershed Toxicity and Pesticide TMDL has been approved by USEPA on October 31, 2015. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.
There is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55699 | ||||
Pollutant: | Cyhalothrin, Lambda | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for Cyhalothrin, lambda, total. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of Cyhalothrin, lambda, total does not exceed 0.0005 ug/L. | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: ll. Pyrethroid insecticides. Reviews of Environmental Contamination and Toxicology 216:51-103. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55687 | ||||
Pollutant: | Cyhalothrin, Lambda | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Cyhalothrin, Lambda, Total. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for lambda-cyhalothrin is the median lethal concentration (LC50) of 0.44 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.44 ug/g is the geometric mean of LC50 values for lambda-cyhalothrin from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55688 | ||||
Pollutant: | Cyhalothrin, Lambda | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for Cyhalothrin, lambda, total. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The evaluation guideline for lambda-cyhalothrin is the median lethal concentration (LC50) of 0.44 ug/g and is normalized by the percentage of organic carbon in the sediment sample. The LC50 0.44 ug/g is the geometric mean of LC50 values for lambda-cyhalothrin from Amweg et al. (2005). | ||||
Guideline Reference: | Use and Toxicity of Pyrethroid Pesticides in the Central Valley, California, USA. Environmental Toxicology and Chemistry, 24:966-972, with erratum 24:No. 5 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
|
|||||
LOE ID: | 55698 | ||||
Pollutant: | Cyhalothrin, Lambda | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for Cyhalothrin, lambda, total. Nine sample results were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of Cyhalothrin, lambda, total does not exceed 0.0005 ug/L. | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: ll. Pyrethroid insecticides. Reviews of Environmental Contamination and Toxicology 216:51-103. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82567 |
Region 3 |
Orcutt Creek |
||
Pollutant: | DDD (Dichlorodiphenyldichloroethane) |
Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Agriculture |
TMDL Name: | Santa Maria River Watershed Toxicity and Pesticides TMDL |
TMDL Project Code: | 1081 |
Date TMDL Approved by USEPA: | 08/31/2015 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 of the Listing Policy, a single line of evidence is necessary to assess listing status. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants in sediment. The pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
Nine lines of evidence are available in the administrative record to assess this pollutant. Two of the two water samples exceed the evaluation guideline (California Toxics Rule) for drinking water. In addition, three of the eight sediment samples exceed the evaluation guideline (MacDonald et al. 2000) used to interpret the narrative water quality objective for aquatic life. Each of these sediment samples were also tested for toxicity to invertebrates and did have significant toxic effects. This water segment is on the CWA section 303(d) List for sediment toxicity. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for adding this water segment-pollutant combination to the section 303(d) list. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Two of the two water samples exceed the evaluation guideline for drinking water. In addition, three of the eight sediment samples exceed the evaluation guideline (MacDonald et al. 2000) used to interpret the narrative water quality objective for aquatic life and these samples did have significant toxic effects to invertebrate test organisms. Each of these exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. The Santa Maria River Watershed Toxicity and Pesticide TMDL has been approved by USEPA on October 31, 2015. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.
In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55725 | ||||
Pollutant: | DDD (Dichlorodiphenyldichloroethane) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Commercial or recreational collection of fish, shellfish, or organisms | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for DDD(p,p). Nine sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The DDD criteria for the protection of human health from consumption of organisms only is 0.00084 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55771 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Three samples were collected to evaluate sediment toxicity. Two of the samples exhibited significant toxicity to the both survival and growth of Hyalella azteca. The samples with significant effects were from sties 312GVT and 312ORC. One sample can have multiple toxicity test results but will be counted only once. One sample is defined as being collected on the same day at the same location with the same lab sample id (if provided). | ||||
Data Reference: | Santa Maria Rotation 2007 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. Region 3 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted with the significant effect code SL. SL is defined as the result being significant compared to the negative control based on a statistical test, less than stated the alpha level, AND less than the evaluation threshold. | ||||
Guideline Reference: | Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064 | ||||
Guideline Reference: | SWAMP_Memo_Toxicity_Data_Intrepretation | ||||
Spatial Representation: | The samples were collected at stations 312GVT (Orcutt Creek at Brown Road), 312ORC (Orcutt Creek at the sand plant), and 312ORB (Orcutt Creek at Black Road). | ||||
Temporal Representation: | The samples were collected in April 2008. | ||||
Environmental Conditions: | |||||
QAPP Information: | The SWAMP QAPP (2002) was followed. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 55727 | ||||
Pollutant: | DDD (Dichlorodiphenyldichloroethane) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 1 of 3 samples exceed the criterion for DDD. Data assessed were suspended sediment samples isolated from the whole water sample. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of DDD is 28.0 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-2/7/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
|
|||||
LOE ID: | 55726 | ||||
Pollutant: | DDD (Dichlorodiphenyldichloroethane) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 3 samples exceed the criterion for DDD. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of DDD is 28.0 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
|
|||||
LOE ID: | 55765 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Three samples were collected to evaluate sediment toxicity. All three samples exhibited significant toxicity. The toxicity tests included survival and growth of Hyalella azteca. Statistically significant effects on Hyalella azteca survival were observed samples collected on 7/1/2008, 10/15/2008, and 10/29/2009. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Toxicity was defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. In the SWAMP data format, a Significance Effect Code of SL denotes toxic test results. | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected at 312ORC-Orcutt Creek at Sand Plant. | ||||
Temporal Representation: | The samples were collected in July and October 2008 and October 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 55716 | ||||
Pollutant: | DDD (Dichlorodiphenyldichloroethane) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 0 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 0 samples exceed the criterion for DDD(p,p). Nine sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The DDD(p,p) criteria for the protection of human health from the consumption of water and organisms is 0.00083 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 1942 | ||||
Pollutant: | DDD (Dichlorodiphenyldichloroethane) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | Chemical monitoring of sediments | ||||
Data Used to Assess Water Quality: | Sediment was sampled at Orcutt Creek (ORC) and in the Santa Maria River (SMA) in 2002 and 2003 (SWAMP, 2004). In the Orcutt Creek sample, the sediment criterion for DDD (sum) was not exceeded on either occasion. | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. Freshwater Sediment Criteria (Policy): DDD(sum) = 28.0 ppb. |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at one station on Orcutt Creek (a tributary to the Santa Maria River). | ||||
Temporal Representation: | Samples were collected on 6/28/2002 and 5/28/2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures for the primary study were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 1941 | ||||
Pollutant: | DDD (Dichlorodiphenyldichloroethane) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Samples were collected on Orcutt Creek on two occasions: in 2002 and 2003 (SWAMP, 2004). Both measurements for 4,4'-DDD exceeded the human health criteria for water consumption (0.00083 ppb). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. CTR criteria for: Human Health (water consumption) = 0.00083 ppb for 4,4'-DDD. |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at one station on Orcutt Creek (a tributary to the Santa Maria River). | ||||
Temporal Representation: | Samples were collected on 9/3/2002 and 5/28/2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 55715 | ||||
Pollutant: | DDD (Dichlorodiphenyldichloroethane) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for DDD. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of DDD is 28.0 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
82727 |
Region 3 |
Orcutt Creek |
||
Pollutant: | DDE (Dichlorodiphenyldichloroethylene) |
Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Agriculture |
TMDL Name: | Santa Maria River Watershed Toxicity and Pesticides TMDL |
TMDL Project Code: | 1081 |
Date TMDL Approved by USEPA: | 08/31/2015 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) List under sections 3.1 and 3.6 of the Listing Policy. Under section 3.1 of the Listing Policy, a single line of evidence is necessary to assess listing status. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants in sediment. The pollutant concentration in sediment must be associated with toxicity to result in addition of the pollutant to the Section 303(d) list.
Eight lines of evidence are available in the administrative record to assess this pollutant. Eight of the eight water samples exceed the evaluation guideline (California Toxics Rule) for drinking water. In addition, eight of the ten sediment samples exceed the evaluation guideline (MacDonald et al. 2000) used to interpret the narrative water quality objective for aquatic life. Each of these sediment samples were also tested for toxicity to invertebrates and did have significant toxic effects. This water segment is on the CWA section 303(d) List for sediment toxicity. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for adding this water segment-pollutant combination to the section 303(d) list. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Eight of the eight water samples exceed the evaluation guideline for drinking water. In addition, eight of the ten sediment samples exceed the evaluation guideline (MacDonald et al. 2000) used to interpret the narrative water quality objective for aquatic life and these samples did have significant toxic effects to invertebrate test organisms. Each of these exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. The Santa Maria River Watershed Toxicity and Pesticide TMDL has been approved by USEPA on October 31, 2015. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.
In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55771 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Three samples were collected to evaluate sediment toxicity. Two of the samples exhibited significant toxicity to the both survival and growth of Hyalella azteca. The samples with significant effects were from sties 312GVT and 312ORC. One sample can have multiple toxicity test results but will be counted only once. One sample is defined as being collected on the same day at the same location with the same lab sample id (if provided). | ||||
Data Reference: | Santa Maria Rotation 2007 2008 | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. Region 3 Basin Plan. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. For SWAMP data exceedances are counted with the significant effect code SL. SL is defined as the result being significant compared to the negative control based on a statistical test, less than stated the alpha level, AND less than the evaluation threshold. | ||||
Guideline Reference: | Methods for Measuring the Toxicity and Bioaccumulation of Sediment-associated Contaminants with Freshwater Invertebrates, Second Edition. U.S. Environmental Protection Agency Office of Research and Development, Duluth, MI , U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-600/R-99/064 | ||||
Guideline Reference: | SWAMP_Memo_Toxicity_Data_Intrepretation | ||||
Spatial Representation: | The samples were collected at stations 312GVT (Orcutt Creek at Brown Road), 312ORC (Orcutt Creek at the sand plant), and 312ORB (Orcutt Creek at Black Road). | ||||
Temporal Representation: | The samples were collected in April 2008. | ||||
Environmental Conditions: | |||||
QAPP Information: | The SWAMP QAPP (2002) was followed. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 55765 | ||||
Pollutant: | Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Three samples were collected to evaluate sediment toxicity. All three samples exhibited significant toxicity. The toxicity tests included survival and growth of Hyalella azteca. Statistically significant effects on Hyalella azteca survival were observed samples collected on 7/1/2008, 10/15/2008, and 10/29/2009. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in, human, plant, animal, or aquatic life. | ||||
Objective/Criterion Reference: | Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | ||||
Evaluation Guideline: | Toxicity was defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control. In the SWAMP data format, a Significance Effect Code of SL denotes toxic test results. | ||||
Guideline Reference: | Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012 | ||||
Guideline Reference: | Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms. Fourth Edition. Office of Water, U.S. Environmental Protection Agency. Washington, D.C. EPA-821-R-02-013 | ||||
Spatial Representation: | The samples were collected at 312ORC-Orcutt Creek at Sand Plant. | ||||
Temporal Representation: | The samples were collected in July and October 2008 and October 2009. | ||||
Environmental Conditions: | |||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 55572 | ||||
Pollutant: | DDE (Dichlorodiphenyldichloroethylene) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 3 samples exceed the criterion for DDE. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of DDE is 31.3 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 7/1/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
|
|||||
LOE ID: | 55573 | ||||
Pollutant: | DDE (Dichlorodiphenyldichloroethylene) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 3 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 3 samples exceed the criterion for DDE. Data assessed were suspended sediment samples isolated from the whole water sample. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of DDE is 31.3 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-2/7/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan from UC Davis Marine Pollution Studies Laboratory. | ||||
|
|||||
LOE ID: | 55728 | ||||
Pollutant: | DDE (Dichlorodiphenyldichloroethylene) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project Data data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for DDE. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | In freshwater sediments the probable effect concentration (predictive of sediment toxicity) for sum of DDE is 31.3 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment quality guidelines for freshwater ecosystems. Environmental Contamination and Toxicology. 39: 20-31 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 12/3/2008-6/10/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The SWAMP QAPP (2008) was followed. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 1943 | ||||
Pollutant: | DDE (Dichlorodiphenyldichloroethylene) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Samples were collected on Orcutt Creek on two occasions: in 2002 and 2003 (SWAMP, 2004). Both measurements for 4,4'-DDE exceeded the human health criteria for water consumption (0.00059 ppb). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. CTR criteria for: Human Health (water consumption) = 0.00059 ppb for 4,4'-DDE. |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at one station on Orcutt Creek (a tributary to the Santa Maria River). | ||||
Temporal Representation: | Samples were collected on 9/3/2002 and 5/28/2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 1944 | ||||
Pollutant: | DDE (Dichlorodiphenyldichloroethylene) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Fish Spawning | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | Chemical monitoring of sediments | ||||
Data Used to Assess Water Quality: | Sediment was sampled at Orcutt Creek (ORC) and in the Santa Maria River (SMA) in 2002 and 2003 (SWAMP, 2004). In the Orcutt Creek sample, the sediment criterion for DDE (sum) was exceeded in 2003, but not in 2002. | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | SWAMP | ||||
Water Quality Objective/Criterion: | General WQOs:
All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. Compliance with the objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, toxicity bioassays of appropriate duration, or other appropriate methods. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. There shall be no increase in pesticide concentrations found in bottom sediments or aquatic life. Freshwater Sediment Criteria: DDE(sum) = 31.3 ppb |
||||
Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Samples were collected at one station on Orcutt Creek (a tributary to the Santa Maria River). | ||||
Temporal Representation: | Samples were collected on 6/28/2002 and 5/28/2003. | ||||
Environmental Conditions: | |||||
QAPP Information: | Quality assurance and quality control procedures for the primary study were identical to those used in the Surface Water Ambient Monitoring Program (SWAMP). The toxicity and chemistry laboratories participating in this study are the same labs responsible for the SWAMP QAPP, and are the labs participating in the SWAMP program. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 55571 | ||||
Pollutant: | DDE (Dichlorodiphenyldichloroethylene) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 8 | ||||
Number of Exceedances: | 8 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 8 of 8 samples exceed the criterion for DDE(p,p). One sample result(s) were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | The DDE(p,p) criteria for the protection of human health from the consumption of water and organisms is 0.00059 ug/L (California Toxics Rule, 2000). | ||||
Objective/Criterion Reference: | Code of Federal Regulations 40 part 131.38 Establishment of numeric criteria for priority toxic pollutants for the State of California. 7/1/2011 Edition | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
DECISION ID |
83011 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Escherichia coli (E. coli) |
Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Domestic Animals/Livestock | Urban Runoff/Storm Sewers |
TMDL Name: | Santa Maria River Watershed Fecal Indicator Bacteria TMDL |
TMDL Project Code: | 917 |
Date TMDL Approved by USEPA: | 04/24/2013 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for addition to the CWA section 303(d) List under sections 2.2, 3.2 and 3.3 of the Listing Policy. Under 3.3 of the Policy, a minimum of one line of evidence is needed to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Twenty-eight of 48 samples exceed the evaluation standard (Ambient Water Quality Criteria for Bacteria, USEPA, 1986) set to protect for water contact recreation (i.e. swimming, wading etc.). Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for adding this water segment-pollutant combination from the CWA section 303(d) List. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Twenty-eight of 48 samples exceed the evaluation guideline set to protect for water contact recreation (i.e. swimming, wading etc.) and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. The Santa Maria River Watershed Fecal Indicator Bacteria TMDL has been approved by USEPA on 04/24/2013. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 51050 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 48 | ||||
Number of Exceedances: | 28 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Orcutt Creek to determine beneficial use support and results are as follows: 28 of 48 samples exceed the criterion for Escherichia coli. | ||||
Data Reference: | Santa Maria Rotation field data 2007-2008 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | USEPA Ambient Water Quality Criteria for Bacteria -1986. | ||||
Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Evaluation Guideline: | Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15 of the USEPA Ambient Water Quality Criteria for Bacteria -1986). | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 5 monitoring sites [ 312ORC-Orcutt Solomon Creek u/s Santa Maria River, 312ORI-Orcutt Solomon Creek at Highway 1, 312GVT- Orcutt Creek at Brown Road, 312ORB-Orcutt Solomon Creek at Black Road, 312ORS-Orcutt Solomon Creek at Solomon Road] | ||||
Temporal Representation: | Data was collected over the time period 1/31/2007-1/16/2008. | ||||
Environmental Conditions: | Central Coast Water Board Staff are not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the SWAMP QAMP, (Puckett, 2002). All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. Sacramento, CA. State Water Resources Control Board. SWAMP. December 2002 (1st version) | ||||
DECISION ID |
82508 |
Region 3 |
Orcutt Creek |
||
Pollutant: | Malathion |
Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (being addressed by USEPA approved TMDL)(2016) |
Revision Status | Original |
Sources: | Agriculture |
TMDL Name: | Santa Maria River Watershed Toxicity and Pesticides TMDL |
TMDL Project Code: | 1081 |
Date TMDL Approved by USEPA: | 08/31/2015 |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the CWA section 303(d) List under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
Eight lines of evidence are available in the administrative record to assess this pollutant. Fourteen of the 17 samples exceed the evaluation guideline for aquatic life protection. However, zero of the 21 samples exceed the USEPA drinking water health advisory level and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is supported and a minimum of two exceedances is needed to determine if beneficial uses are not supported using table 3.1. Therefore, the use support rating is set to 'insufficient information'. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the CWA section 303(d) List. In accordance with section 2.2 of the Policy, there is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Fourteen of the 17 samples exceed the evaluation guideline for aquatic life protection and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. The Santa Maria River Watershed Toxicity and Pesticide TMDL has been approved by USEPA on October 31, 2015. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem.
There is sufficient justification to place it in the Being Addressed portion of the CWA 303(d) List because a TMDL has been completed and approved by RWQCB and USEPA, and is expected to result in attainment of the standard. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
|
|||||
LOE ID: | 55746 | ||||
Pollutant: | Malathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 9 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 9 samples exceed the criterion for MALATHION. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for malathion is 500 µg/L. | ||||
Guideline Reference: | 2011 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55749 | ||||
Pollutant: | Malathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 4 of 6 samples exceed the criterion for Malathion. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of Malathion does not exceed 0.028 ug/L. | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55752 | ||||
Pollutant: | Malathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for Malathion. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of Malathion does not exceed 0.028 ug/L. | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55751 | ||||
Pollutant: | Malathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 3 of 4 samples exceed the criterion for Malathion. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of Malathion does not exceed 0.028 ug/L. | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: l. Organophosphate insecticides. Reviews of Environmental Contamination and Toxicology 216:1-48. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55748 | ||||
Pollutant: | Malathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed TMDL Project data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Malathion. An arithmetic mean is calculated when replicates, such as field duplicates, are reported. If a non-detect is one of the results, then one half the reporting limit is used in this calculation. | ||||
Data Reference: | Data from Santa Maria River Watershed and Oso Flaco Creek Watershed TMDL Monitoring Study | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Water Quality Control Plan, Central Coast Basin, Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for malathion is 500 µg/L. | ||||
Guideline Reference: | 2011 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Ck. at Brown Road - 312GVT, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected on a single day 8/26/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | Sampling and analysis was conducted following the SWAMP QAPP 2008. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55750 | ||||
Pollutant: | Malathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 5 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed USGS data for Orcutt Creek to determine beneficial use support and results are as follows: 5 of 5 samples exceed the criterion for MALATHION. Four sample results were not used in the assessment because the laboratory data reporting limit(s) was above the objective and therefore the results could not be quantified with the level of certainty required by the Listing Policy. | ||||
Data Reference: | Data for various pollutants in the Pajaro, Salinas, and Santa Maria River estuaries, Jan. 2008-Oct. 2009 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life (Central Coast Basin Plan General Objective). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | UC Davis Aquatic Life Criteria: Aquatic life should not be affected unacceptably if the 4-day average concentration of Malathion does not exceed 0.028 ug/L. | ||||
Guideline Reference: | Aquatic life water quality criteria derived via the UC Davis method: ll. Pyrethroid insecticides. Reviews of Environmental Contamination and Toxicology 216:51-103. | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 1 monitoring site [ Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 1/5/2008-10/29/2009. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the Watershed-scale Evaluation of Agricultural BMP Effectiveness Protecting Critical Coastal Habitats project. A QAPP was provided and the data was analyzed at the Marine Pollution Studies Laboratory and submitted in SWAMP format. | ||||
QAPP Information Reference(s): | Surface Water Ambient Monitoring Program Quality Assurance Program Plan | ||||
|
|||||
LOE ID: | 55747 | ||||
Pollutant: | Malathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 4 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Malathion. | ||||
Data Reference: | Final Data File used for assessment: Central Coast Water Quality Preservation Inc water quality data | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Water Quality Control Plan for the Central Coastal Basin (CCRWQCB 2011): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life. No individual pesticide or combination of pesticides shall reach concentrations that adversely affect beneficial uses. (Chapter III, Section II.A.2 Objectives for all Inland and Surface Waters, Enclosed Bays and Estuaries). | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for malathion is 500 µg/L. | ||||
Guideline Reference: | 2011 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 8/22/2006-9/27/2006. Cooperative Monitoring Program (CMP) staff conduct monitoring for conventional pollutants at all Ag Waiver monitoring sites monthly. CMP staff also conduct water toxicity monitoring quarterly and sediment toxicity monitoring annually (in spring). | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | All data was collected following the Standard Operating Procedures and Data Quality Objectives outlined in the Cooperative Monitoring Program QAPP, (Clark and Ogle 2006). QA data are included in submission. All data are flagged as appropriate. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||
|
|||||
LOE ID: | 55745 | ||||
Pollutant: | Malathion | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 6 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | State Water Board staff assessed CMP data for Orcutt Creek to determine beneficial use support and results are as follows: 0 of 6 samples exceed the criterion for Malathion. | ||||
Data Reference: | Data from Region 3 Conditional Waiver Cooperative Monitoring Program, Jan. 2007-Jun. 2010 | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | No individual pesticide or combination of pesticides shall be present in concentrations that adversely affect beneficial uses. | ||||
Objective/Criterion Reference: | Water Quality Control Plan for the Central Coastal Basin | ||||
Evaluation Guideline: | The USEPA drinking water health advisory for malathion is 500 µg/L. | ||||
Guideline Reference: | 2011 Edition of the Drinking Water Standards and Health Advisories | ||||
Spatial Representation: | Data for this line of evidence for Orcutt Creek was collected at 2 monitoring sites [ Orcutt Creek - 312ORI, Orcutt Creek u/s Santa Maria River - 312ORC] | ||||
Temporal Representation: | Data was collected over the time period 2/14/2007-9/26/2007. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might affect interpretation of the data. | ||||
QAPP Information: | The data was collected for the CCRWQCB Cooperative Monitoring Program for Agriculture data and provided in SWAMP format. | ||||
QAPP Information Reference(s): | Quality Assurance Project Plan for Monitoring for the Region 3 Conditional Ag Waiver Cooperative Monitoring Program, Revision 6 | ||||