| |
DECISION ID |
17895 |
| |
| Pollutant: |
Benthic Community Effects |
| Final Listing Decision: |
Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: |
New Decision |
| Revision Status |
Revised |
| Impairment from Pollutant or Pollution: |
Pollution |
| |
| Weight of Evidence: |
Benthic Community Effects is being considered for placement on the section 303(d) list under sections 3.9 and 3.2 of the Listing Policy. Under section 3.9, an additional line of evidence associating the Benthic Community Effects with a water or sediment concentration of pollutants is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this indicator. 12 of 12 samples exceeded the water quality objective.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing Benthic Community Effects in this water segment 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. 12 of 12 samples exceeded the Index of Biological Integrity (IBI) value of "poor" water quality for this area and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy, however as required under section 3.9 of the Listing Policy, pollutant(s) could not be directly associated with the Benthic Community Effects.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
| |
| RWQCB Board Decision / Staff 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 it cannot be determined if applicable water quality standards are not being exceeded. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
| |
| LOE ID: |
26391 |
| |
| Pollutant: |
Benthic Community Effects |
| LOE Subgroup: |
Adverse Biological Responses |
| Matrix: |
Water |
| Fraction: |
None |
| |
| Beneficial Use: |
Warm Freshwater Habitat |
| |
| Number of Samples: |
2 |
| Number of Exceedances: |
2 |
| |
| Data and Information Type: |
Benthic macroinvertebrate surveys |
| Data Used to Assess Water Quality: |
Two samples of IBI data were taken on November 2000 and June of 2003 at one sampling site. Both of the samples exceeded the IBI impairment threshold. |
| Data Reference: |
Fish and Game IBI Data |
| |
| Water Quality Objective/Criterion: |
From the San Diego Basin Plan the objective is: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board. |
| Objective/Criterion Reference: |
Water Quality Control Plan for the San Diego Basin (9). |
| |
| Evaluation Guideline: |
The Index of Biological Integrity (IBI) is an analytical tool that can be used to assess the biological and physical condition of streams and rivers within a zero to one hundred scoring range: Very Poor 0-19, Poor 20-39, Fair 40-59, Good 60- 79, Very Good 80-100. The IBI score of 39 was set as an impairment threshold because it is a statistical criterion of two standard deviations below the mean reference site score which defines the boundary between 'fair' and 'poor' IBI creek conditions. (Ode, p. 9) |
| Guideline Reference: |
"A Quantitative Tool for Assessing the Integrity of Southern Coastal California Streams". Environmental Management. Volume 35, number 1 (2005): 1-13.
|
| |
| Spatial Representation: |
Samples were collected at one site: 905GVCWBx on Green Valley Creek. |
| Temporal Representation: |
Sampling occurred during two events on November 2000 and June of 2003. |
| Environmental Conditions: |
|
| QAPP Information: |
Quality Control for collection and identification was conducted in accordance with the Quality Assurance Project Plan for the California Stream Bioassessment Procedure and the State of California, California Monitoring an Assessment Program: "CMAP", Quality Assurance Project Plan. |
| QAPP Information Reference(s): |
State of California, California Monitoring and Assessment Program: "CMAP". |
| |
Quality Assurance Project Plan for the California Stream Bioassessment Procedure |
| |
The San Diego Stream Team Quality Assurance Project Plan |
|
| |
| LOE ID: |
26719 |
| |
| Pollutant: |
Benthic Community Effects |
| LOE Subgroup: |
Adverse Biological Responses |
| Matrix: |
Water |
| Fraction: |
None |
| |
| Beneficial Use: |
Warm Freshwater Habitat |
| |
| Number of Samples: |
10 |
| Number of Exceedances: |
10 |
| |
| Data and Information Type: |
Benthic macroinvertebrate surveys |
| Data Used to Assess Water Quality: |
Ten samples of IBI data were taken on October 2002 to May 2007 at one sampling site. All ten of the samples exceeded the IBI impairment threshold. |
| Data Reference: |
Stream Bioassessment Data. Co-permitee Data. Collected 2002-2007. |
| |
| Water Quality Objective/Criterion: |
From the San Diego Basin Plan the objective is: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board. |
| Objective/Criterion Reference: |
Water Quality Control Plan for the San Diego Basin (9). |
| |
| Evaluation Guideline: |
The Index of Biological Integrity (IBI) is an analytical tool that can be used to assess the biological and physical condition of streams and rivers within a zero to one hundred scoring range: Very Poor 0-19, Poor 20-39, Fair 40-59, Good 60- 79, Very Good 80-100. The IBI score of 39 was set as an impairment threshold because it is a statistical criterion of two standard deviations below the mean reference site score which defines the boundary between 'fair' and 'poor' IBI creek conditions. (Ode, p. 9) |
| Guideline Reference: |
"A Quantitative Tool for Assessing the Integrity of Southern Coastal California Streams". Environmental Management. Volume 35, number 1 (2005): 1-13.
|
| |
| Spatial Representation: |
Samples were collected at one site: GVC-WB on Green Valley Creek. |
| Temporal Representation: |
Sampling occurred during October 2002 and May and October from May 2003 to October 2006 and during May 2007. |
| Environmental Conditions: |
|
| QAPP Information: |
Quality Control for collection and identification was conducted in accordance with the Quality Assurance Manual for Freshwater Bioassessment. |
| QAPP Information Reference(s): |
QUALITY ASSURANCE MANUAL FOR FRESHWATER BIOASSESSMENT
Revision 0 |
| |
DECISION ID |
16705 |
| |
| Pollutant: |
Total Nitrogen as N |
| Final Listing Decision: |
Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: |
New Decision |
| Revision Status |
Revised |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
This pollutant is being considered for placement on the 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.
One line of evidence are available in the administrative record to assess this pollutant. Four of the 4 samples exceed the water quality objective.
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. Four of the 4 samples exceeded the Basin Plan 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. |
| |
| RWQCB Board Decision / Staff 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 it cannot be determined if applicable water quality standards are not being exceeded due to limited samples. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 16705 |
| |
| LOE ID: |
9033 |
| |
| Pollutant: |
Total Nitrogen as N |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
None |
| |
| Beneficial Use: |
Warm Freshwater Habitat |
| |
| Number of Samples: |
4 |
| Number of Exceedances: |
4 |
| |
| Data and Information Type: |
Fixed station physical/chemical monitoring (conventional pollutants only) |
| Data Used to Assess Water Quality: |
Four water samples were collected at Green Valley Creek station 2, 905SDGVC2, on January 2003, April 2003, May 2003, and September 2003. All showed excessive nitrogen concentrations according to results in California's Surface Water Ambient Monitoring Program Report, 2007. |
| Data Reference: |
Monitoring data for Region 9 |
| |
| Water Quality Objective/Criterion: |
Water bodies shall not contain biostimulatory substances in concentrations that promote aquatic growth to the extent that such growths cause nuisance or adversely affect beneficial uses (RWQCB, 2007).
A desired goal in order to prevent plant nuisance in streams and other flowing waters appears to be 0.1 mg/L total phosphorus, P. These values are not to be exceeded more than 10% of the time unless studies of the specific water body in question clearly show that water quality objective changes are permissible and changes are approved by the Regional Board. Analogous threshold values have not been set for nitrogen compounds; however, natural ratios of nitrogen to phosphorus are to be determined by surveillance and monitoring and upheld. If data are lacking, a ratio of N:P = 10:1, on a weight to weight basis shall be used (RWQCB, 2007). |
| Objective/Criterion Reference: |
Water Quality Control Plan for the San Diego Basin (9). |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Water samples were collected at Green Valley Creek Station 2, 905SDGVC2; (Latitude 33.04342, Longitude -117.07557). |
| Temporal Representation: |
Samples were collected on January 2003, April 2003, and May 2003. |
| Environmental Conditions: |
|
| QAPP Information: |
Quality control for the chemical analysis portion of this study was conducted in accordance with the California's Surface Water Ambient Monitoring Program. |
| QAPP Information Reference(s): |
2002. Quality Assurance Management Plan for the State of California's Surface Water Ambient Monitoring Program. California Department of Fish and Game, Monterey, CA. |
| |
DECISION ID |
5017 |
| |
| Pollutant: |
Aluminum |
| Final Listing Decision: |
Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: |
Do Not List on 303(d) list (TMDL required list)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. One of the 3 samples exceeds the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5017 |
| |
| LOE ID: |
3265 |
| |
| Pollutant: |
Aluminum |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
3 |
| Number of Exceedances: |
1 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. in 03/2000 and 04/2000. One of 3 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Aluminum is 0.2 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
Samples were collected 03/13/2000, 03/21/200, and 04/18/2000. One sample was collected each day. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5018 |
| |
| Pollutant: |
Antimony |
| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 3 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5018 |
| |
| LOE ID: |
3266 |
| |
| Pollutant: |
Antimony |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| 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: |
Data were collected by the City of San Diego Water Dept. in 03/2000 and 04/2000. None of the 3 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Antimony is 0.006 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
Samples were collected 03/13/2000, 03/21/200, and 04/18/2000. One sample was collected each day. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5048 |
| |
| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 4 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5048 |
| |
| LOE ID: |
3267 |
| |
| Pollutant: |
Arsenic |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
4 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. in 04/1999, 03/2000, and 04/2000. None of the 4 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Arsenic is 0.05 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
Samples were collected on 04/26/1999, 03//13/2000, 03/21/2000, and 04/18/2000. One sample was collected on each day. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5049 |
| |
| Pollutant: |
Barium |
| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 3 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5049 |
| |
| LOE ID: |
3268 |
| |
| Pollutant: |
Barium |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| 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: |
Data were collected by the City of San Diego Water Dept. in 03/2000 and 04/2000. None of the 3 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Barium is 1.0 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
Samples were collected on 03/13/2000, 03/21/2000, and 04/18/2000. One sample was collected each day. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5050 |
| |
| Pollutant: |
Beryllium |
| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 3 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5050 |
| |
| LOE ID: |
3269 |
| |
| Pollutant: |
Beryllium |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| 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: |
Data were collected by the City of San Diego Water Dept. in 03/2000 and 04/2000. None of the 3 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Beryllium is 0.004 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
Samples were collected on 03/13/2000, 03/21/2000, and 04/18/2000. One sample was collected each day. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5051 |
| |
| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 4 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5051 |
| |
| LOE ID: |
3270 |
| |
| Pollutant: |
Cadmium |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
4 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. in 04/1999, 03/2000, and 04/2000. None of the 4 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Cadmium is 0.005 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
One sample was collected each day on 04/26/1999, 03/13/2000, 03/21/2000, and 04/18/2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5067 |
| |
| Pollutant: |
Chromium (total) |
| Final Listing Decision: |
Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: |
Do Not List on 303(d) list (TMDL required list)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 4 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5067 |
| |
| LOE ID: |
3272 |
| |
| Pollutant: |
Chromium (total) |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
4 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. from 04/1999 to 04/2000. None of the 4 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Chromium is 0.05 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
One sample was collected each day on 04/26/1999, 03/13/2000, 03/21/2000, and 04/18/2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5068 |
| |
| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 4 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5068 |
| |
| LOE ID: |
3273 |
| |
| Pollutant: |
Copper |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
4 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. from 04/1999 to 04/2000. None of the 4 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Copper is 1.0 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
One sample per day was collected on 04/26/1999, 03/13/2000, 03/21/2000, and 04/18/2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5260 |
| |
| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 2 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5260 |
| |
| LOE ID: |
3275 |
| |
| Pollutant: |
Mercury |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
2 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. in 04/1999 and 02/2000. None of the 2 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Mercury is 0.002 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
Samples were collected on 04/26/1999 and 02/14/2000. One sample was collected each day. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5261 |
| |
| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 4 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5261 |
| |
| LOE ID: |
3276 |
| |
| Pollutant: |
Nickel |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
4 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. from 04/1999 to 04/2000. None of the 4 samples were in exceedance. (SWRCB, 2002). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Nickel is 0.1 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
One sample was collected per day on 04/26/1999, 03/13/2000, 03/21/2000, and 04/18/2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5016 |
| |
| Pollutant: |
Picloram |
| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 2 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5016 |
| |
| LOE ID: |
3264 |
| |
| Pollutant: |
Picloram |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
2 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. on 02/15/2000 and 02/22/2000. None of the 2 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Picloram is 0.5 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
Samples were collected on 02/15/2000 and 02/22/2000. One sample was collected on each day. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5000 |
| |
| Pollutant: |
Selenium |
| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 4 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5000 |
| |
| LOE ID: |
3277 |
| |
| Pollutant: |
Selenium |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
4 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. from 04/1999 to 04/2000. None of 4 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Selenium is 0.05 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
One sample per day was collected on 04/26/1999, 03/13/2000, 03/21/2000, and 04/18/2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5001 |
| |
| Pollutant: |
Silver |
| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 4 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5001 |
| |
| LOE ID: |
3278 |
| |
| Pollutant: |
Silver |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
4 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. from 04/1999 to 04/2000. None of the 4 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for SIlver is 0.1 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
One sample per day was collected on 04/26/1999, 03/13/2000, 03/21/2000, and 04/18/2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5002 |
| |
| Pollutant: |
Thallium |
| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 3 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5002 |
| |
| LOE ID: |
3280 |
| |
| Pollutant: |
Thallium |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| 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: |
Data were collected by the City of San Diego Water Dept. in 03/2000 and 04/2000. None of the 3 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for thallium is 0.002 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
One sample per day was collected on 03/13/2000, 03/21/2000, and 04/18/2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5003 |
| |
| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
One line of evidence is available in the administrative record to assess this pollutant. None of the 4 samples exceed the Basin Plan criteria, and this does not exceed the allowable frequency of the Listing Policy.
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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB 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 exceeded. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5003 |
| |
| LOE ID: |
3281 |
| |
| Pollutant: |
Zinc |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
4 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. from 04/1999 to 04/2000. None of the 4 samples were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Zinc is 5.0 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
One sample per day was collected on 04/26/1999, 03/13/2000, 03/21/2000, and 04/18/2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5066 |
| |
| Pollutant: |
Chloride |
| Final Listing Decision: |
List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: |
List on 303(d) list (TMDL required list)(2006) |
| Revision Status |
Original |
| Sources: |
Source Unknown |
| Expected TMDL Completion Date: |
2019 |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the 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. Six of 13 samples exceeded the Basin Plan criteria, and 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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5066 |
| |
| LOE ID: |
3271 |
| |
| Pollutant: |
Chloride |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
13 |
| Number of Exceedances: |
6 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. from 04/1999 to 04/2000. Six of 13 samples were in exceedance. |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Chloride is 250 mg/L. This concentration is not to be exceeded more than 10% of the time during any one year period. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
Samples were collected from 04/1999 to 04/2000. Three samples were collected in 1999 and 10 samples were collected in 2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5069 |
| |
| Pollutant: |
Manganese |
| Final Listing Decision: |
List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: |
List on 303(d) list (TMDL required list)(2006) |
| Revision Status |
Original |
| Sources: |
Source Unknown |
| Expected TMDL Completion Date: |
2019 |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the 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. Four of 4 samples exceeded the Basin Plan criteria and both years had exceedances more than 10% or the time. 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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
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| USEPA Decision: |
|
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Lines of Evidence (LOEs) for Decision ID 5069 |
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| LOE ID: |
3274 |
| |
| Pollutant: |
Manganese |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
4 |
| Number of Exceedances: |
4 |
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| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. on four days from 4/26/1999 to 4/18/2000. Four of 4 samples were in exceedance. |
| Data Reference: |
Placeholder reference 2006 303(d) |
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| Water Quality Objective/Criterion: |
The water quality objective for manganese in Green Valley Creek is 0.05 milligrams/liter (mg/l) according to Basin Plan, Table 3-2 entitled, Water Quality Objectives. This concentration is not to be exceeded more than 10% of the time during any one year period. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
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| Evaluation Guideline: |
|
| Guideline Reference: |
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| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
One sample per day was collected on 04/26/1999, 03/13/2000, 03/21/2000, and 04/18/2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
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DECISION ID |
5015 |
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| Pollutant: |
Pentachlorophenol (PCP) |
| Final Listing Decision: |
List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: |
List on 303(d) list (TMDL required list)(2006) |
| Revision Status |
Original |
| Sources: |
Source Unknown |
| Expected TMDL Completion Date: |
2019 |
| Impairment from Pollutant or Pollution: |
Pollutant |
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| Weight of Evidence: |
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.
This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Two of 2 samples exceeded the Basin Plan criteria, and 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. |
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| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The decision has not changed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
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| USEPA Decision: |
|
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Lines of Evidence (LOEs) for Decision ID 5015 |
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| LOE ID: |
3263 |
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| Pollutant: |
Pentachlorophenol (PCP) |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
2 |
| Number of Exceedances: |
2 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data were collected by the City of San Diego Water Dept. on 02/15/2000 and 02/22/2000. Two of 2 samples were in exceedance. |
| Data Reference: |
Placeholder reference 2006 303(d) |
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| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for Pentachlorophenol is 0.001 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
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| Evaluation Guideline: |
|
| Guideline Reference: |
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| Spatial Representation: |
Samples were collected at Green Valley Creek west of West Bernardo Drive. |
| Temporal Representation: |
Samples were collected on 02/15/2000 and 02/22/2000. One sample was collected on each day. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |