Water Body Name: | Gazos Creek |
Water Body ID: | CAR3042001019990304101540 |
Water Body Type: | River & Stream |
DECISION ID |
81306 |
Region 3 |
Gazos Creek |
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Pollutant: | Ammonia |
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: | The pollutant name was changed 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.
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. Five lines of evidence (LOEs) are available in the administrative record to assess this pollutant. Two LOEs summarize unionized ammonia data in which one of the 88 samples exceed the Basin Plan general objective for unionized ammonia set to protect aquatic life. Three LOEs summarize total ammonia data and zero of the 98 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 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 88 samples exceed the Basin Plan general objective for unionized ammonia set to protect aquatic life and zero of the 98 samples exceed the EPA's Lifetime Health advisory level for total ammonia in drinking water. None of these 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 Staff 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: | 9221 | ||||
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: | 51 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 1 of 51 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 50454 | ||||
Pollutant: | Ammonia (Unionized) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceed the criterion for Ammonia as N, Unionized. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 17548 | ||||
Pollutant: | Ammonia as Nitrogen | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 7 samples exceed the criterion for Ammonia as N, Total. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-14 - Diversions, 202-GAZOS-16 - Gazos Creek Mainstem] | ||||
Temporal Representation: | Data was collected over the time period 5/26/2004-11/9/2004. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 50477 | ||||
Pollutant: | Ammonia as Nitrogen | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for Ammonia As N, Total. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 9220 | ||||
Pollutant: | Ammonia as Nitrogen | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 52 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 52 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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 |
74771 |
Region 3 |
Gazos Creek |
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Pollutant: | Anthracene |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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 fully supported using Table 3.1. 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 Staff 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: | 15751 | ||||
Pollutant: | Anthracene | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Anthracene. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for anthracene is 845 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
74669 |
Region 3 |
Gazos Creek |
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Pollutant: | Arsenic |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 15823 | ||||
Pollutant: | Arsenic | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Arsenic. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for arsenic is 33 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
75147 |
Region 3 |
Gazos Creek |
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Pollutant: | Benzo(a)anthracene |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 15695 | ||||
Pollutant: | Benzo(a)anthracene | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Benzo(a)anthracene. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for Benzo(a)anthracene is 1050 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
74934 |
Region 3 |
Gazos Creek |
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Pollutant: | Benzo(a)pyrene (3,4-Benzopyrene -7-d) |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 15516 | ||||
Pollutant: | Benzo(a)pyrene (3,4-Benzopyrene -7-d) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Benzo(a)pyrene. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for Benzo(a)Pyrene is 1450 ug/Kg dry weight (Macdonald et al. 2000) | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
75059 |
Region 3 |
Gazos Creek |
||
Pollutant: | Boron |
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. One of the 85 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 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. One of the 85 samples exceed the water quality objective and this does not exceed the allowable frequency listed in Table 3.21 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 Staff 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: | 9222 | ||||
Pollutant: | Boron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Agricultural Supply | ||||
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 CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 1 of 46 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 50282 | ||||
Pollutant: | Boron | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for Boron, dissolved. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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. 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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 |
75096 |
Region 3 |
Gazos Creek |
||
Pollutant: | Cadmium |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 15365 | ||||
Pollutant: | Cadmium | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Cadmium. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for cadmium is 4.98 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
74497 |
Region 3 |
Gazos Creek |
||
Pollutant: | Chloride |
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.
Two lines of evidence are available in the administrative record to assess this pollutant. Eleven of the 85 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 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. Eleven of the 85 samples exceed the water quality objective 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 Staff 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: | 50283 | ||||
Pollutant: | Chloride | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 4 of 39 samples exceed the criterion for Chloride. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 9223 | ||||
Pollutant: | Chloride | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 46 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 7 of 46 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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 |
74199 |
Region 3 |
Gazos 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.
Two lines of evidence are available in the administrative record to assess this pollutant. One of the 89 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. One of the 89 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 Staff 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: | 50455 | ||||
Pollutant: | Chlorophyll-a | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 37 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceed the criterion for Chlorophyll a. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 | ||||
North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | |||||
Water quality standards table | |||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 9199 | ||||
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: | 51 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 1 of 51 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) | ||||
North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | |||||
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 | ||||
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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 11971 | ||||
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: | 1 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 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) | ||||
North Carolina standards, criteria, or toxic concentrations. Adopted per title 15A North Carolina Administrative Code subchapter 2B - Surface water and wetland standards | |||||
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 | ||||
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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 7/6/2001. 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): | |||||
DECISION ID |
81211 |
Region 3 |
Gazos Creek |
||
Pollutant: | Chlorpyrifos |
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 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 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. One line of evidence is available in the administrative record to assess this pollutant. The single sediment sample (pore water) exceed 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. However, 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 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 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 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. The single sediment sample (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. However, pore water will not be the sole basis for any decision. Additionally this 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: | 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 Staff 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: | 16174 | ||||
Pollutant: | Chlorpyrifos | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life 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: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Chlorpyrifos. | ||||
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. (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 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 | ||||
Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | |||||
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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
74327 |
Region 3 |
Gazos Creek |
||
Pollutant: | Chromium |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 16059 | ||||
Pollutant: | Chromium (total) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chromium. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for chromium is 111 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
74710 |
Region 3 |
Gazos Creek |
||
Pollutant: | Chrysene (C1-C4) |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 15904 | ||||
Pollutant: | Chrysene (C1-C4) | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Chrysene. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for Chrysene is 1290 ug/Kg dry weight (Macdonald et al. 2000) | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
74765 |
Region 3 |
Gazos Creek |
||
Pollutant: | Copper |
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 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 sediment, and pollutant concentrations in sediment must be associated with toxicity to result in adding that pollutant to the Section 303(d) list. One line of evidence is available in the administrative record to assess this pollutant. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 15973 | ||||
Pollutant: | Copper | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Copper. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for cooper is 149 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
74822 |
Region 3 |
Gazos Creek |
||
Pollutant: | Diazinon |
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 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 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. One line of evidence is available in the administrative record to assess this pollutant. The single sediment sample (pore water) did not exceed the Evaluation Guideline (Finlayson, 2004) applied to protect for aquatic life beneficial uses. 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 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 sediment sample (pore water) did not exceeded the aquatic life water quality objective and this sample will not be included in the exceedance count because the criteria used are specific to water samples, not sediment pore water. Each of the sample sizes are insufficient to determine with the power and confidence of the Listing Policy if standards are not met. A minimum of 16 samples is needed for application of table 3.1. 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 Staff 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: | 16875 | ||||
Pollutant: | Diazinon | ||||
LOE Subgroup: | Pollutant-Water | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Diazinon. | ||||
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. (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 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 | ||||
Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | |||||
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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
80477 |
Region 3 |
Gazos Creek |
||
Pollutant: | Dieldrin |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 4. Pursuant to section 3.11 of the Listing Policy, no additional data |
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 Staff 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: | 16698 | ||||
Pollutant: | Dieldrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Dieldrin. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (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 effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
74931 |
Region 3 |
Gazos 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: | No new data were assessed.
This pollutant is being considered for placement on the CWA 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 16513 | ||||
Pollutant: | Endrin | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Endrin. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for endrin is 207 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
74985 |
Region 3 |
Gazos Creek |
||
Pollutant: | Escherichia coli (E. coli) |
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 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status.
Seven lines of evidence are available in the administrative record to assess this pollutant. Eight of the 72 samples exceed the evaluation guideline (USEPA Ambient Water Quality Criteria for Bacteria -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 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 72 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 Staff 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: | 17579 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 7 samples exceed the criterion for Escherichia coli. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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. E. coli is a fecal coliform. | ||||
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 Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-14 - Diversions, 202-GAZOS-16 - Gazos Creek Mainstem] | ||||
Temporal Representation: | Data was collected over the time period 5/26/2004-11/9/2004. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
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LOE ID: | 18454 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Gazos Creek to determine beneficial use support and results are as follows: 1 of 7 samples exceed the criterion for Escherichia coli. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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) | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-14 - Diversions, 202-GAZOS-16 - Gazos Creek Mainstem] | ||||
Temporal Representation: | Data was collected over the time period 5/26/2004-11/9/2004. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 50498 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 37 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 4 of 37 samples exceed the criterion for Escherichia coli. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 10339 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 2 of 23 samples exceed the criterion for Escherichia coli. | ||||
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 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) | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 1/19/2005-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 18536 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Gazos Creek to determine beneficial use support and results are as follows: 1 of 5 samples exceed the criterion for Escherichia coli. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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) | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 3 monitoring sites [ 202-GAZOS-11 - Gazos Creek at mouth, 202-GAZOS-12 - Gazos Creek at Slate Cr confluence, 202-GAZOS-13 - Gazos Creek at South Fork confluence] | ||||
Temporal Representation: | Data was collected over the time period 5/17/2003-5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 10340 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 23 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 23 samples exceed the criterion for Escherichia coli. | ||||
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. E. coli is a fecal coliform. | ||||
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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 1/19/2005-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 18537 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Escherichia coli. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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. E. coli is a fecal coliform. | ||||
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 Gazos Creek was collected at 3 monitoring sites [ 202-GAZOS-11 - Gazos Creek at mouth, 202-GAZOS-12 - Gazos Creek at Slate Cr confluence, 202-GAZOS-13 - Gazos Creek at South Fork confluence] | ||||
Temporal Representation: | Data was collected over the time period 5/17/2003-5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
74916 |
Region 3 |
Gazos Creek |
||
Pollutant: | Fecal Coliform |
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 3.3 of the Listing Policy. Under this section 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. Fourteen of the 88 samples exceed the water quality objective for contact recreation (i.e. swimming) and 2 of the 88 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 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. Fourteen of the 88 samples exceed the water quality objective for contact recreation (i.e. swimming) and 2 of the 88 samples exceed the water quality objective for non-contact 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 Staff 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: | 50514 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 37 samples exceed the criterion for Coliform, Fecal. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 10280 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 51 | ||||
Number of Exceedances: | 8 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 8 of 51 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 10281 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 51 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 2 of 51 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 50497 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 37 | ||||
Number of Exceedances: | 6 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Gazos Creek to determine beneficial use support and results are as follows: 6 of 37 samples exceed the criterion for Coliform, Fecal. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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 |
71631 |
Region 3 |
Gazos Creek |
||
Pollutant: | Fluoranthene |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 16598 | ||||
Pollutant: | Fluoranthene | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Fluoranthene. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for Fluoranthene is 2,230 ug/Kg dry weight (Macdonald et al. 2000) | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
74878 |
Region 3 |
Gazos Creek |
||
Pollutant: | Fluorene |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 16464 | ||||
Pollutant: | Fluorene | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Fluorene. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for fluorene is 536 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
80478 |
Region 3 |
Gazos Creek |
||
Pollutant: | Lead |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 17310 | ||||
Pollutant: | Lead | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Lead. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for lead is 128 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
73983 |
Region 3 |
Gazos Creek |
||
Pollutant: | Mercury |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 17380 | ||||
Pollutant: | Mercury | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 1 of 1 samples exceed the criterion for Mercury. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for mercury is 1.06 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
73879 |
Region 3 |
Gazos Creek |
||
Pollutant: | Naphthalene |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 17213 | ||||
Pollutant: | Naphthalene | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Naphthalene. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for naphthalene is 561 ug/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
80526 |
Region 3 |
Gazos Creek |
||
Pollutant: | Nickel |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 17030 | ||||
Pollutant: | Nickel | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Nickel. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for nickel is 48.6 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
84415 |
Region 3 |
Gazos Creek |
||
Pollutant: | Nitrate |
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 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.
Twelve lines of evidence are available in the administrative record to assess this pollutant. Zero of the 105 nitrate samples exceed the water quality objectives for Agricultural Supply and Municipal and Domestic Supply beneficial uses. One of the 39 nitrate samples exceed the water quality objective for the Cold Freshwater Habitat beneficial use. Zero of the 39 nitrate/nitrite samples exceed the water quality objectives for the Agricultural Supply and the Municipal and Domestic Supply beneficial uses. One of the 39 nitrate/nitrite samples exceed the water quality objective for Cold Freshwater Habitat. The Central Coast Region requires supporting evidence of eutrophication to support a nitrate listing at 1.0 mg/L for Cold and Warm Freshwater Habitat. Insufficient evidence was found to support nitrate as a cause of impairment for Cold or Warm Freshwater habitats: 1) Dissolved oxygen for this water body ranged 4.76 mg/L to 13.18 mg/L, occasionally exceeding (falling below) the Cold Freshwater Habitat water quality objective of 7.0 mg/L and the upper dissolved oxygen screening of 13.0 mg/L (R3 NNE Technical Report, 2010). 2) Water column chlorophyll a concentration averaged 3.09 ug/L and peaked at 48.0 ug/L, but has not exceeded the screening threshold of 15 ug/L since 2009 (R3 NNE Technical Report, 2010). 3) Using site-specific data from this waterbody, the California Benthic Biomass Predictor Tool, v. 13 (Tetratech, 2007) predicted that benthic algal contribution to oxygen deficit, algae biomass, and benthic chlorophyll a concentrations for this water body would not exceed screening thresholds for cold water habitat. 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. Zero of the 105 nitrate samples exceed the water quality objectives for Agricultural Supply and Municipal and Domestic Supply beneficial uses. One of the 39 nitrate samples exceed the water quality objective for the Cold Freshwater Habitat beneficial use. Zero of the 39 nitrate/nitrite samples exceed the water quality objectives for the Agricultural Supply and the Municipal and Domestic Supply beneficial uses. One of the 39 nitrate/nitrite samples exceed the water quality objective for Cold Freshwater Habitat. These exceed 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 placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Staff 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: | 18323 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 7 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-14 - Diversions, 202-GAZOS-16 - Gazos Creek Mainstem] | ||||
Temporal Representation: | Data was collected over the time period 5/26/2004-11/9/2004. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 9196 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 52 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 52 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 18489 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 7 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 3 monitoring sites [ 202-GAZOS-11 - Gazos Creek at mouth, 202-GAZOS-12 - Gazos Creek at Slate Cr confluence, 202-GAZOS-13 - Gazos Creek at South Fork confluence] | ||||
Temporal Representation: | Data was collected over the time period 5/17/2003-5/7/2005. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 50457 | ||||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 1 of 39 samples exceed the criterion for Nitrate/Nitrite as N. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 | ||||
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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 50495 | ||||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for Nitrate/Nitrite as N. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 50285 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 50456 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 1 of 39 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 | ||||
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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 9197 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 52 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 52 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: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A | ||||
Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | |||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 18338 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 7 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A | ||||
Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | |||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-14 - Diversions, 202-GAZOS-16 - Gazos Creek Mainstem] | ||||
Temporal Representation: | Data was collected over the time period 5/26/2004-11/9/2004. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 18505 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 7 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 7 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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: | Title 22, Division 4, Ch. 15, Article 4, Section 64431, Table 64431-A | ||||
Water Quality Control Plan (Basin Plan) - Central Coast Region (Region 3) | |||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 3 monitoring sites [ 202-GAZOS-11 - Gazos Creek at mouth, 202-GAZOS-12 - Gazos Creek at Slate Cr confluence, 202-GAZOS-13 - Gazos Creek at South Fork confluence] | ||||
Temporal Representation: | Data was collected over the time period 5/17/2003-5/7/2005. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 50494 | ||||
Pollutant: | Nitrate | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for Nitrate as N. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 50434 | ||||
Pollutant: | Nitrate/Nitrite (Nitrite + Nitrate as N) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for Nitrate/Nitrite as N. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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. 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 nitrate + nitrite for livestock watering is 100 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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 |
74986 |
Region 3 |
Gazos 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 39 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 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 39 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 Staff 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: | 50435 | ||||
Pollutant: | Nitrogen, Nitrite | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for Nitrite as N. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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. 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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 |
81466 |
Region 3 |
Gazos 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.
Eight lines of evidence are available in the administrative record to assess this pollutant. Two of the 170 samples exceeded the Cold Freshwater Habitat water quality objective for dissolved oxygen. 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 saturation data is used only as supporting information and the use support rating for this pollutant 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. Two of the 170 samples exceeded the Cold Freshwater Habitat water quality objectives 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 Staff 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: | 12265 | ||||
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: | 51 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 51 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 18073 | ||||
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: | 66 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 66 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-16 - Gazos Creek Mainstem, 202-GAZOS-14 - Diversions] | ||||
Temporal Representation: | Data was collected over the time period 8/10/2003-11/16/2004. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 50472 | ||||
Pollutant: | Oxygen, Dissolved | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Dissolved | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 17979 | ||||
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: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Gazos Creek to determine beneficial use support and results are as follows: 1 of 8 samples exceed the criterion for Oxygen, Dissolved. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 3 monitoring sites [ 202-GAZOS-11 - Gazos Creek at mouth, 202-GAZOS-12 - Gazos Creek at Slate Cr confluence, 202-GAZOS-13 - Gazos Creek at South Fork confluence] | ||||
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 11953 | ||||
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: | 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 Gazos Creek to determine beneficial use support and results are as follows: 5 of 6 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 7/6/2001-8/22/2006. 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: | 50473 | ||||
Pollutant: | Dissolved oxygen saturation | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 4 of 39 samples exceed the criterion for Oxygen, Saturation. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 11952 | ||||
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: | 6 | ||||
Number of Exceedances: | 1 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 1 of 6 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 7/6/2001-8/22/2006. 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: | 12266 | ||||
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: | 51 | ||||
Number of Exceedances: | 5 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 5 of 51 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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 |
74880 |
Region 3 |
Gazos Creek |
||
Pollutant: | Phenanthrene |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 17117 | ||||
Pollutant: | Phenanthrene | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Phenanthrene. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for Phenanthrene is 1170 ug/Kg dry weight (Macdonald et al. 2000) | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
73722 |
Region 3 |
Gazos Creek |
||
Pollutant: | Pyrene |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 16994 | ||||
Pollutant: | Pyrene | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Pyrene. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for Pyrene is 1520 ug/Kg dry weight (Macdonald et al. 2000) | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
74436 |
Region 3 |
Gazos Creek |
||
Pollutant: | Sodium |
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.
Two lines of evidence are available in the administrative record to assess this pollutant. Twelve of the 85 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 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. Twelve of the 85 samples exceed the water quality objective 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 Staff 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: | 9198 | ||||
Pollutant: | Sodium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 46 | ||||
Number of Exceedances: | 7 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 7 of 46 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 50437 | ||||
Pollutant: | Sodium | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 39 | ||||
Number of Exceedances: | 5 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Water Board Staff assessed public submissions data for Gazos Creek to determine beneficial use support and results are as follows: 5 of 39 samples exceed the criterion for Sodium. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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 |
74553 |
Region 3 |
Gazos Creek |
||
Pollutant: | Specific Conductivity |
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.
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. Six lines of evidence are available in the administrative record to assess this pollutant. Three of the 169 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 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. Three of the 169 samples exceed the water quality objective 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 Staff 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: | 17480 | ||||
Pollutant: | Electrical Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Gazos Creek to determine beneficial use support and results are as follows: 2 of 2 samples exceed the criterion for Conductivity(ms). | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 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 Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-11 - Gazos Creek at mouth, 202-GAZOS-13 - Gazos Creek at South Fork confluence] | ||||
Temporal Representation: | Data was collected on a single day 5/7/2005. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 10282 | ||||
Pollutant: | Electrical Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 51 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 1 of 51 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 50284 | ||||
Pollutant: | Specific Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for Conductivity(Us). | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 17406 | ||||
Pollutant: | Electrical Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Conductivity(Us). | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 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 Gazos Creek was collected at 3 monitoring sites [ 202-GAZOS-11 - Gazos Creek at mouth, 202-GAZOS-12 - Gazos Creek at Slate Cr confluence, 202-GAZOS-13 - Gazos Creek at South Fork confluence] | ||||
Temporal Representation: | Data was collected over the time period 5/17/2003-5/1/2004. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 17552 | ||||
Pollutant: | Electrical Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 67 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 67 samples exceed the criterion for Conductivity(Us). | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 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 Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-16 - Gazos Creek Mainstem, 202-GAZOS-14 - Diversions] | ||||
Temporal Representation: | Data was collected over the time period 8/10/2003-11/16/2004. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 10318 | ||||
Pollutant: | Electrical Conductivity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 5 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 5 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 7/6/2001-8/22/2006. 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): | |||||
DECISION ID |
74437 |
Region 3 |
Gazos Creek |
||
Pollutant: | Temperature, water |
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.
Five lines of evidence are available in the administrative record to assess this pollutant. Zero of the 171 samples exceed the cold freshwater habitat evaluation guideline (Sigler et al. 1984). 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. Zero of the 171 samples exceed the cold freshwater habitat 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 Staff 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: | 11951 | ||||
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: | 51 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 51 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 50476 | ||||
Pollutant: | Temperature, water | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 11970 | ||||
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: | 6 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 6 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 7/6/2001-8/22/2006. 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: | 18800 | ||||
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: | 67 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 67 samples exceed the criterion for Water Temperature. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-16 - Gazos Creek Mainstem, 202-GAZOS-14 - Diversions] | ||||
Temporal Representation: | Data was collected over the time period 8/10/2003-11/16/2004. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 18633 | ||||
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 Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Gazos 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: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 3 monitoring sites [ 202-GAZOS-11 - Gazos Creek at mouth, 202-GAZOS-12 - Gazos Creek at Slate Cr confluence, 202-GAZOS-13 - Gazos Creek at South Fork confluence] | ||||
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
81518 |
Region 3 |
Gazos Creek |
||
Pollutant: | Toxicity |
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 3.6 at least one line of evidence is necessary to assess listing status and a water segment shall be placed on the section 303(d) List if the water segment exhibits statistically significant water or sediment toxicity using the binomial distribution as described in section 3.1 of the Listing Policy.
One line of evidence is available in the administrative record to assess this pollutant. The single sample exceeded the water quality objective 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'. 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. The single sample exceeded 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: | 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 Staff 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: | 24211 | ||||
Pollutant: | Invertebrate Toxicity | ||||
LOE Subgroup: | Toxicity | ||||
Matrix: | Sediment | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 1 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | TOXICITY TESTING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 1 of 1 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: 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1]. | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
74546 |
Region 3 |
Gazos Creek |
||
Pollutant: | Turbidity |
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.
Three lines of evidence are available in the administrative record to assess this pollutant. Nine of the 88 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 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. Nine of the 88 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 Staff 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: | 11969 | ||||
Pollutant: | Turbidity | ||||
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: | 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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 3 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 7/6/2001-8/29/2001. 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: | 11950 | ||||
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: | 7 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 7 of 46 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 50475 | ||||
Pollutant: | Turbidity | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 2 of 39 samples exceed the criterion for Turbidity(NTU). | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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 |
80527 |
Region 3 |
Gazos Creek |
||
Pollutant: | Zinc |
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 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, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant, including one for sediment toxicity. The single sample does not exceed the Evaluation Guideline (MacDonald et al. 2000) as it applies to aquatic life beneficial uses, and the sediment was not toxic to aquatic invertebrates. 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 (MacDonald et al. 2000) as it applies to aquatic life beneficial uses. 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. 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 Staff 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: | 17901 | ||||
Pollutant: | Zinc | ||||
LOE Subgroup: | Pollutant-Sediment | ||||
Matrix: | Sediment | ||||
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: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP_SWAMP Monitoring (03SW3001) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 1 samples exceed the criterion for Zinc. | ||||
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. (Water Quality Control Plan, Central Coast Basin, General Objective 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: | In fresh water sediments the probable effects level (predictive of sediment toxicity) for zinc is 459 mg/Kg dry weight (MacDonald et al. 2000). | ||||
Guideline Reference: | Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413 | ||||
Spatial Representation: | Data for this line of evidence for Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected on a single day 3/29/2004. 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): | |||||
DECISION ID |
74761 |
Region 3 |
Gazos 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.
Twenty-five lines of evidence are available in the administrative record to assess this pollutant. Five beneficial uses are assessed. Five of the 168 samples exceed the water quality objectives for Agricultural Supply and Cold Freshwater habitats. Six of the 168 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. Five of the 168 samples exceed the water quality objectives for Agricultural Supply and Cold Freshwater habitats. Six of the 168 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 Staff 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: | 50513 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for pH. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 19157 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
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 Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Gazos Creek to determine beneficial use support and results are as follows: 2 of 8 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 3 monitoring sites [ 202-GAZOS-11 - Gazos Creek at mouth, 202-GAZOS-12 - Gazos Creek at Slate Cr confluence, 202-GAZOS-13 - Gazos Creek at South Fork confluence] | ||||
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 18242 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 67 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 67 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-16 - Gazos Creek Mainstem, 202-GAZOS-14 - Diversions] | ||||
Temporal Representation: | Data was collected over the time period 8/10/2003-11/16/2004. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 10298 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 51 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 3 of 51 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 10319 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 3 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 3 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 7/6/2001-8/29/2001. 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: | 50436 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Agricultural Supply | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for pH. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 19154 | ||||
Pollutant: | pH | ||||
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 Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Gazos Creek to determine beneficial use support and results are as follows: 2 of 8 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 3 monitoring sites [ 202-GAZOS-11 - Gazos Creek at mouth, 202-GAZOS-12 - Gazos Creek at Slate Cr confluence, 202-GAZOS-13 - Gazos Creek at South Fork confluence] | ||||
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 19155 | ||||
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: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Gazos Creek to determine beneficial use support and results are as follows: 4 of 8 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 3 monitoring sites [ 202-GAZOS-11 - Gazos Creek at mouth, 202-GAZOS-12 - Gazos Creek at Slate Cr confluence, 202-GAZOS-13 - Gazos Creek at South Fork confluence] | ||||
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 10320 | ||||
Pollutant: | pH | ||||
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: | 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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 3 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 7/6/2001-8/29/2001. 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: | 18257 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 67 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 67 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-16 - Gazos Creek Mainstem, 202-GAZOS-14 - Diversions] | ||||
Temporal Representation: | Data was collected over the time period 8/10/2003-11/16/2004. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 10299 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Aquatic Life Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 51 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 1 of 51 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 50474 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Cold Freshwater Habitat | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for pH. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 10321 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 3 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 3 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 7/6/2001-8/29/2001. 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: | 18258 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 67 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 67 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-16 - Gazos Creek Mainstem, 202-GAZOS-14 - Diversions] | ||||
Temporal Representation: | Data was collected over the time period 8/10/2003-11/16/2004. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 10300 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 51 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 4 of 51 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 50496 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic Supply | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for pH. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 19156 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Municipal & Domestic 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 Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Gazos Creek to determine beneficial use support and results are as follows: 2 of 8 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 3 monitoring sites [ 202-GAZOS-11 - Gazos Creek at mouth, 202-GAZOS-12 - Gazos Creek at Slate Cr confluence, 202-GAZOS-13 - Gazos Creek at South Fork confluence] | ||||
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
|
|||||
LOE ID: | 10302 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 51 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 4 of 51 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 19173 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
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 Coastal Watershed Council (Snapshot day monitoring) (R3_Snap) data for Gazos Creek to determine beneficial use support and results are as follows: 2 of 8 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 3 monitoring sites [ 202-GAZOS-11 - Gazos Creek at mouth, 202-GAZOS-12 - Gazos Creek at Slate Cr confluence, 202-GAZOS-13 - Gazos Creek at South Fork confluence] | ||||
Temporal Representation: | Data was collected over the time period 5/17/2003-5/6/2006. Coastal Watershed Council Snapshot Day Monitoring is conducted annually. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | State Board approved QAPP. Multiple errors were identified in data and were flagged or fixed by RB staff (in communication with Project staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 18260 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 67 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 67 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-16 - Gazos Creek Mainstem, 202-GAZOS-14 - Diversions] | ||||
Temporal Representation: | Data was collected over the time period 8/10/2003-11/16/2004. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 10338 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 3 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 3 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 7/6/2001-8/29/2001. 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: | 50515 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Non-Contact Recreation | ||||
Number of Samples: | 39 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 39 samples exceed the criterion for pH. | ||||
Data Reference: | Coastal Confluences field data 2007-2010 | ||||
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: | 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 2/20/2007-6/14/2010. | ||||
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 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: | 18259 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 67 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Coastal Watershed Council (Clean streams project) (R3_CLNStrm) data for Gazos Creek to determine beneficial use support and results are as follows: 0 of 67 samples exceed the criterion for pH. | ||||
Data Reference: | Final Data File used for assessment: Monterey Bay National Marine Sanctuary Volunteer Monitoring Network Data. 2003-2006 | ||||
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 Gazos Creek was collected at 2 monitoring sites [ 202-GAZOS-16 - Gazos Creek Mainstem, 202-GAZOS-14 - Diversions] | ||||
Temporal Representation: | Data was collected over the time period 8/10/2003-11/16/2004. | ||||
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data. | ||||
QAPP Information: | Regional Board approved QAPP. Data entry completed by volunteers. Multiple errors were identified in data and were flagged by RB staff (in communication with Clean Streams Program staff) prior to assessment of data. | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 10301 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 51 | ||||
Number of Exceedances: | 4 | ||||
Data and Information Type: | PHYSICAL/CHEMICAL MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed CCAMP Coastal Confluences (CC) data for Gazos Creek to determine beneficial use support and results are as follows: 4 of 51 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 5/1/2001-12/18/2006. CCAMP Coastal confluence monitoring is conducted monthly (with the exception of April 2003 - December 2003) and is ongoing. | ||||
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: | 10322 | ||||
Pollutant: | pH | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 3 | ||||
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 Gazos Creek to determine beneficial use support and results are as follows: 0 of 3 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 Gazos Creek was collected at 1 monitoring site [ 304GAZ-Gazos Creek Lagoon at Highway 1] | ||||
Temporal Representation: | Data was collected over the time period 7/6/2001-8/29/2001. 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): | |||||