| |
DECISION ID |
5101 |
| |
| Pollutant: |
Iron |
| Final Listing Decision: |
Do Not List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: |
Do Not List on 303(d) list (TMDL required list)(2006) |
| 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.
Two lines of evidence are available in the administrative record to assess this pollutant. Three of the 23 samples exceed the Basin Plan water quality objective for iron.
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. Three of the 23 samples exceed the Basin Plan water quality objective for iron 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 applicable water quality standards are not being exceeded. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
| |
| LOE ID: |
861 |
| |
| Pollutant: |
Iron |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
15 |
| Number of Exceedances: |
1 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. from January 1996 to December 2000. One of 15 samples was 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 iron is 0.3 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at site SUA-0 near the water surface. |
| Temporal Representation: |
Samples were collected between January 1996 and December 2000. There were 2-4 samples per year. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
|
| |
| LOE ID: |
6179 |
| |
| Pollutant: |
Iron |
| 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: |
Fixed station physical/chemical monitoring (conventional pollutants only) |
| Data Used to Assess Water Quality: |
City of San Diego, 2007a. Water Department, Water Quality Monitoring Data for Drinking Source Water Reservoirs. January 2005 to December 2006. |
| Data Reference: |
Water Department, Water Quality Monitoring Data for Drinking Source Water Reservoirs. January 2005 to December 2006. |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan, inland surface waters designated as domestic or municipal supply, shall not contain concentrations of iron in excess of the secondary maximum contaminant level 0.3 mg/L (RWQCB, 2007). |
| Objective/Criterion Reference: |
Water Quality Control Plan for the San Diego Basin (9). |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
One surface water sample was collected per sampling event at Sutherland Reservoir at a standard location designated Station A. |
| Temporal Representation: |
Samples were collected approximately once a month from January 2005 to December 2006; however, some months were not sampled. |
| Environmental Conditions: |
|
| QAPP Information: |
Samples were collected and analyzed according to the Water Quality Laboratorys Quality Assurance Manual. Applicable field and laboratory Standard Operating Procedures were also provided by the San Diego Water Department. |
| QAPP Information Reference(s): |
| |
DECISION ID |
16986 |
| |
| Pollutant: |
Phosphorus |
| 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 is available in the administrative record to assess this pollutant. Four of the nine samples exceed the Basin Plan water quality objective for phosphorus.
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 nine samples exceed the Basin Plan water quality objective for phosphorus 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 applicable water quality standards are not being exceeded. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 16986 |
| |
| LOE ID: |
6181 |
| |
| Pollutant: |
Phosphorus |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
None |
| |
| Beneficial Use: |
Warm Freshwater Habitat |
| Aquatic Life Use: |
Warm Freshwater Habitat |
| |
| Number of Samples: |
9 |
| Number of Exceedances: |
4 |
| |
| Data and Information Type: |
Fixed station physical/chemical monitoring (conventional pollutants only) |
| Data Used to Assess Water Quality: |
City of San Diego, 2007a. Water Department, Water Quality Monitoring Data for Drinking Source Water Reservoirs. January 2005 to December 2006. |
| Data Reference: |
Water Department, Water Quality Monitoring Data for Drinking Source Water Reservoirs. January 2005 to December 2006. |
| |
| 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) |
| Objective/Criterion Reference: |
Water Quality Control Plan for the San Diego Basin (9). |
| |
| Evaluation Guideline: |
AWater Quality Control Plan for the San Diego Basin Goal of 0.025 mg/L for total phosphorus in any standing body of water. (RWQCB, 2007) |
| Guideline Reference: |
Water Quality Control Plan for the San Diego Basin (9). |
| |
| Spatial Representation: |
One surface water sample was collected per sampling event at Sutherland Reservoir at a standard location designated Station A. |
| Temporal Representation: |
Samples were collected approximately once a month from January 2005 to December 2006; however, some months were not sampled. |
| Environmental Conditions: |
|
| QAPP Information: |
Samples were collected and analyzed according to the Water Quality Laboratorys Quality Assurance Manual. Applicable field and laboratory Standard Operating Procedures were also provided by the San Diego Water Department. |
| QAPP Information Reference(s): |
| |
DECISION ID |
16987 |
| |
| Pollutant: |
Total Nitrogen as N |
| Final Listing Decision: |
List on 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: |
New Decision |
| Revision Status |
Revised |
| Sources: |
Natural Sources | Source Unknown | Unknown Nonpoint Source |
| Expected TMDL Completion Date: |
2021 |
| 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 is available in the administrative record to assess this pollutant. All of the nine samples exceed the Basin Plan water quality objective for total nitrogen as N.
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. All of the nine samples exceed the Basin Plan water quality objective for total nitrogen as N and this exceeds 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 be placed on the section 303(d) list because applicable water quality standards are exceeded and a pollutant contributes to or causes the problem. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 16987 |
| |
| LOE ID: |
6180 |
| |
| Pollutant: |
Total Nitrogen as N |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
None |
| |
| Beneficial Use: |
Warm Freshwater Habitat |
| Aquatic Life Use: |
Warm Freshwater Habitat |
| |
| Number of Samples: |
9 |
| Number of Exceedances: |
9 |
| |
| Data and Information Type: |
Fixed station physical/chemical monitoring (conventional pollutants only) |
| Data Used to Assess Water Quality: |
City of San Diego, 2007a. Water Department, Water Quality Monitoring Data for Drinking Source Water Reservoirs. January 2005 to December 2006. |
| Data Reference: |
Water Department, Water Quality Monitoring Data for Drinking Source Water Reservoirs. January 2005 to December 2006. |
| |
| 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) |
| Objective/Criterion Reference: |
Water Quality Control Plan for the San Diego Basin (9). |
| |
| Evaluation Guideline: |
A desired goal in order to prevent plant nuisance in any standing body of water is 0.025 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) |
| Guideline Reference: |
Water Quality Control Plan for the San Diego Basin (9). |
| |
| Spatial Representation: |
One surface water sample was collected per sampling event at Sutherland Reservoir at a standard location designated Station A. |
| Temporal Representation: |
Samples were collected approximately once a month from January 2005 to December 2006; however, some months were not sampled. |
| Environmental Conditions: |
|
| QAPP Information: |
Samples were collected and analyzed according to the Water Quality Laboratorys Quality Assurance Manual. Applicable field and laboratory Standard Operating Procedures were also provided by the San Diego Water Department. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5276 |
| |
| Pollutant: |
Color |
| Final Listing Decision: |
Do Not Delist from 303(d) list (TMDL required list) |
| Last Listing Cycle's Final Listing Decision: |
Do Not Delist from 303(d) list (TMDL required list)(2006) |
| Revision Status |
Original |
| Sources: |
Unknown Nonpoint Source | Unknown Point Source | Urban Runoff/Storm Sewers |
| Expected TMDL Completion Date: |
2019 |
| Impairment from Pollutant or Pollution: |
Pollutant |
| |
| Weight of Evidence: |
This pollutant is being considered for removal from the section 303(d) list under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
One lines of evidence is available in the administrative record to assess this pollutant. Twenty-one of 21 samples exceed the Basin Plan water quality objective for color.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list.
This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. Twenty-one of 21 samples exceed the Basin Plan water quality objective for color and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy.
4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5276 |
| |
| LOE ID: |
858 |
| |
| Pollutant: |
Color |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
21 |
| Number of Exceedances: |
21 |
| |
| Data and Information Type: |
Not Specified |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. between March 1996 and December 2000. Twenty-one of 21 samples were in exceedance of the WQO for municipal waters. |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From Basin Plan: For inland surface waters with a municipal beneficial use, the WQO for color is 15 units. For other beneficial uses, the WQO is 20 units. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at site SUA-0 at the water surface. |
| Temporal Representation: |
Samples were collected on a quarterly basis between March 1996 and December 2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5224 |
| |
| 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: |
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 is available in the administrative record to assess this pollutant. One of the 14 samples exceeds the Basin Plan water quality objective for aluminum.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.
This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. One of the 14 samples exceeds the Basin Plan water quality objective for aluminum 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: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5224 |
| |
| LOE ID: |
851 |
| |
| Pollutant: |
Aluminum |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
14 |
| Number of Exceedances: |
1 |
| |
| Data and Information Type: |
Not Specified |
| Data Used to Assess Water Quality: |
Data was collected at sample site SUA-0 by the City of San Diego Water Dept. from January 1996 to September 2000. One of 14 samples was 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 site SUA-0 on the water's surface. |
| Temporal Representation: |
Two to 4 samples per year were collected between January 1996 and September 2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5240 |
| |
| 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: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. None of the 4 samples exceed the Basin Plan water quality objective for antimony.
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. None of the 4 samples exceed the Basin Plan water quality objective for antimony 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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5240 |
| |
| LOE ID: |
852 |
| |
| Pollutant: |
Antimony |
| 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: |
Not Specified |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. from September 1996 to June 2000. Four samples were collected, none 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 site SUA-0 at the water's surface in the Sutherland Reservoir. |
| Temporal Representation: |
Samples were collected between September 1996 and June 2000. One sample was collected in 1996, two in 1997 and one in 2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5183 |
| |
| 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: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. None of the 16 samples exceed the Basin Plan water quality objective for arsenic.
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. None of the 16 samples exceed the Basin Plan water quality objective for arsenic 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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5183 |
| |
| LOE ID: |
853 |
| |
| Pollutant: |
Arsenic |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
16 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
Not Specified |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. between January 1996 and September 2000. None of the 16 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 sample site SUA-0 at the surface in the Sutherland Reservoir. |
| Temporal Representation: |
Samples were collected on a quarterly basis from January 1996 to September 2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5251 |
| |
| 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: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. None of the 19 samples exceed the Basin Plan water quality objective for barium.
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. None of the 19 samples exceed the Basin Plan water quality objective for barium 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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5251 |
| |
| LOE ID: |
854 |
| |
| Pollutant: |
Barium |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
19 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
Not Specified |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. from January 1996 to September 2000. Nineteen samples were collected, with no exceedances. (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 from site SUA-0 at the water surface. |
| Temporal Representation: |
Samples were collected on a quarterly basis from January 1996 to September 2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5252 |
| |
| 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: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. None of the 2 samples exceed the Basin Plan water quality objective for cadmium.
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. None of the 2 samples exceed the Basin Plan water quality objective for cadmium 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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5252 |
| |
| LOE ID: |
855 |
| |
| Pollutant: |
Cadmium |
| 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 was collected at site SUA-0 by the City of San Diego Water Dept. on January 2, 1996 and June 3, 1996. Of 2 samples, none 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 site SUA-0 at the water's surface. |
| Temporal Representation: |
One sample was collected on January 2, 1996 and one was collected on June 3, 1996. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5253 |
| |
| 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)(2006) |
| Revision Status |
Original |
| 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 is available in the administrative record to assess this pollutant. None of the 22 samples exceed the Basin Plan water quality objective for chloride.
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. None of the 22 samples exceed the Basin Plan water quality objective for chloride 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: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5253 |
| |
| LOE ID: |
856 |
| |
| Pollutant: |
Chloride |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
22 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. between March 1996 and December 2000. Twenty-two samples were collected, none 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 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 site SUA-0 at the water surface. |
| Temporal Representation: |
Samples were collected on a quarterly basis from March 1996 to December 2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5275 |
| |
| 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: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. None of the 6 samples exceed the California Toxics Rule: freshwater chronic maximum (hardness dependent) water quality objective for chromium.
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. None of the 6 samples exceed the California Toxics Rule: freshwater chronic maximum (hardness dependent) water quality objective for chromium 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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5275 |
| |
| LOE ID: |
857 |
| |
| Pollutant: |
Chromium (total) |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
6 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. between January 1996 and March 2000. None of the 6 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 site SUA-0 at the water's surface. |
| Temporal Representation: |
Samples were collected between January 1996 and March 2000. 2 samples were collected in 1996, two in 1997, one in 1999 and one in 2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5277 |
| |
| 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: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. None of the 8 samples exceed the Basin Plan water quality objective for copper.
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. None of the 8 samples exceed the Basin Plan water quality objective for copper 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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5277 |
| |
| LOE ID: |
859 |
| |
| Pollutant: |
Copper |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
8 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. from January 1996 to December 1998. None of the 8 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 site SUA-0 at the water surface. |
| Temporal Representation: |
Samples were collected between January 1996 and December 1998. There are four samples for 1996, one for 1997 and three for 1998. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5100 |
| |
| Pollutant: |
Fluoride |
| 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: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. None of the 19 samples exceed the Basin Plan water quality objective for fluoride.
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. None of the 19 samples exceed the Basin Plan water quality objective for fluoride 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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5100 |
| |
| LOE ID: |
860 |
| |
| Pollutant: |
Fluoride |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
19 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
Not Specified |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. between March 1996 and September 2000. None of the 19 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 Fluoride is 2.4 mg/L when Annual Average of Maximum Daily Air Temperature = <53.8F, 2.2 mg/L when Annual Average of Maximum Daily Air Temperature = 53.8F-58.3F, 2.0 mg/L when Annual Average of Maximum Daily Air Temperature = 58.4F-63.8F, 1.8 mg/L when Annual Average of Maximum Daily Air Temperature = 63.9F-70.6F, 1.6 mg/L when Annual Average of Maximum Daily Air Temperature = 70.7F-79.2F, and 1.4 mg/L when Annual Average of Maximum Daily Air Temperature = 79.3F-90.5F. For inland surface water with all other beneficial uses the WQO for fluoride is 1.0 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at site SUA-0 near the water surface. |
| Temporal Representation: |
Samples were collected on a quarterly basis from March 1996 to September 2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5103 |
| |
| 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: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. The single sample did not exceed the Basin Plan water quality objective for mercury.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.
This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. The single sample did not exceed the Basin Plan water quality objective for mercury and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met. A minimum of two samples is needed for application of table 3.1.
4. Pursuant to [SECTION 3.11/4.11] 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 Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5103 |
| |
| LOE ID: |
863 |
| |
| Pollutant: |
Mercury |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
1 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. on March 8, 1999. One sample was collected. It was not 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 0.002mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
The sample was collected at site SUA-0 near the water's surface. |
| Temporal Representation: |
The sample was collected on March 8, 1999. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5122 |
| |
| 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: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. None of the 4 samples exceed the Bain Plan water quality objective for nickel.
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. None of the 4 samples exceed the Bain Plan water quality objective for nickel 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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5122 |
| |
| LOE ID: |
864 |
| |
| 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 was collected at site SUA-0 by the City of San Diego Water Dept. from December 1996 to March 2000. Four samples were collected, none 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 nickel is 0.1 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at site SUA-0 near the surface. |
| Temporal Representation: |
Samples were collected between December 1996 and March 2000. There was one sample for each year, excluding 1998. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5223 |
| |
| Pollutant: |
Pentachlorophenol (PCP) |
| 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: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. The single sample did not exceed the Basin Plan water quality objective for pentachlorophenol.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.
This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. The single sample did not exceed the Basin Plan water quality objective for pentachlorophenol and this sample size is insufficient to determine with the power and confidence of the Listing Policy if standards are not met. A minimum of two samples is needed for application of table 3.1.
4. Pursuant to [SECTION 3.11/4.11] 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 Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
|
| |
| USEPA Decision: |
|
| |
| |
Lines of Evidence (LOEs) for Decision ID 5223 |
| |
| LOE ID: |
850 |
| |
| Pollutant: |
Pentachlorophenol (PCP) |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
1 |
| Number of Exceedances: |
0 |
| |
| Data and Information Type: |
Not Specified |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. on December 1, 1997. One sample was collected. It was not 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 pentachlorophenol is 0.001mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Data was collected at sample site SUA-0 in the Sutherland Reservoir. Sample was collected at the water's surface. |
| Temporal Representation: |
The PCP sample comes from one sampling day, December 1, 1997. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5124 |
| |
| 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: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. None of the 3 samples exceed the Bain Plan water quality objective for picloram.
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. None of the 3 samples exceed the Bain Plan water quality objective for picloram 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. |
| |
| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
| |
| SWRCB Board Decision / Staff Recommendation: |
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| USEPA Decision: |
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Lines of Evidence (LOEs) for Decision ID 5124 |
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| LOE ID: |
866 |
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| Pollutant: |
Picloram |
| 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: |
Not Specified |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. between December 1998 and June 2000. Three samples were collected, 0 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) |
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| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at site SUA-0 near the water's surface. |
| Temporal Representation: |
Samples were collected between December 1998 and June 2000. There was one sample for each year. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
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DECISION ID |
5154 |
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| 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: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. None of the 2 samples exceed the Bain Plan water quality objective for selenium.
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. None of the 2 samples exceed the Bain Plan water quality objective for selenium 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. |
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| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
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| SWRCB Board Decision / Staff Recommendation: |
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| USEPA Decision: |
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Lines of Evidence (LOEs) for Decision ID 5154 |
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| LOE ID: |
867 |
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| Pollutant: |
Selenium |
| 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 was collected at site SUA-0 by the City of San Diego Water Dept. on March 3, 1997 and September 2, 1997. 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 selenium is 0.05 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
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| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at site SUA-0 near the water surface. |
| Temporal Representation: |
Samples were collected on March 3, 1997 and September 2, 1997. One sample was collected each day. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
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DECISION ID |
5155 |
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| Pollutant: |
Sulfates |
| 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 |
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| 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 is available in the administrative record to assess this pollutant. None of the 22 samples exceed the Basin Plan water quality objective for sulfates.
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. None of the 22 samples exceed the Basin Plan water quality objective for sulfates 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. |
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| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
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| SWRCB Board Decision / Staff Recommendation: |
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| USEPA Decision: |
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Lines of Evidence (LOEs) for Decision ID 5155 |
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| LOE ID: |
868 |
| |
| Pollutant: |
Sulfates |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
22 |
| Number of Exceedances: |
0 |
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| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. from March 1996 to December 2000. Twenty-two samples were collected. None were in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
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| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters and all beneficial uses, the WQO for sulfate 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) |
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| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at site SUA-0 near the water's surface. |
| Temporal Representation: |
Samples were collected on a quarterly basis from March 1996 to December 2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
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DECISION ID |
5243 |
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| Pollutant: |
Toluene |
| 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 |
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| Weight of Evidence: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. None of the 3 samples exceed the Basin Plan water quality objective for toluene.
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. None of the 3 samples exceed the Basin Plan water quality objective for toluene 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. |
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| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
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| SWRCB Board Decision / Staff Recommendation: |
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| USEPA Decision: |
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Lines of Evidence (LOEs) for Decision ID 5243 |
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| LOE ID: |
870 |
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| Pollutant: |
Toluene |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
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| Beneficial Use: |
Municipal & Domestic Supply |
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| Number of Samples: |
3 |
| Number of Exceedances: |
0 |
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| Data and Information Type: |
Not Specified |
| Data Used to Assess Water Quality: |
Data was collected by the City of San Diego Water Dept. on June 1, 1998, February 8, 1999, and May 3, 1999. Of the 3 samples, none were in exceedance. (SWRCB, 2003). |
| 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 Toluene is 0.15 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
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| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at site SUA-0 near the surface. |
| Temporal Representation: |
One sample each was collected on June 1, 1998, February 8, 1999, and May 3, 1999. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
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DECISION ID |
5242 |
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| Pollutant: |
Total Dissolved Solids |
| 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 |
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| 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 is available in the administrative record to assess this pollutant. One of the 10 samples exceeds the Basin Plan water quality objective for total dissolved solids.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category.
This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. One of the 10 samples exceeds the Basin Plan water quality objective for total dissolved solids 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. |
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| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
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| SWRCB Board Decision / Staff Recommendation: |
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| USEPA Decision: |
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Lines of Evidence (LOEs) for Decision ID 5242 |
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| LOE ID: |
869 |
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| Pollutant: |
Total Dissolved Solids |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
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| Beneficial Use: |
Municipal & Domestic Supply |
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| Number of Samples: |
10 |
| Number of Exceedances: |
1 |
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| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. between September 1998 and December 2000. One of 10 samples was in exceedance. (SWRCB, 2003). |
| Data Reference: |
Placeholder reference 2006 303(d) |
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| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters and all beneficial uses, the WQO for TDS is 500 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) |
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| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at site SUA-0 near the water surface. |
| Temporal Representation: |
Samples were collected from September 1998 to December 2000. Two to 5 samples were collected each year. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
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DECISION ID |
5244 |
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| 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)(2006) |
| Revision Status |
Original |
| Impairment from Pollutant or Pollution: |
Pollutant |
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| 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 is available in the administrative record to assess this pollutant. Four of the 21 samples exceed the Basin Plan water quality objective for turbidity.
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 21 samples exceed the Basin Plan water quality objective for turbidity 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. |
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| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
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| SWRCB Board Decision / Staff Recommendation: |
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| USEPA Decision: |
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Lines of Evidence (LOEs) for Decision ID 5244 |
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| LOE ID: |
871 |
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| Pollutant: |
Turbidity |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
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| Beneficial Use: |
Municipal & Domestic Supply |
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| Number of Samples: |
21 |
| Number of Exceedances: |
4 |
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| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Samples were collected at site SUA-0 by the City of San Diego Water Dept. between March 1996 and December 2000. Four of 21 samples were in exceedance of the WQO for a municipal beneficial use. (SWRCB, 2003). |
| 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 turbidity is 5 units. For all other beneficial uses, the WQO is 20 ntu. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
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| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at site SUA-0 near the surface. |
| Temporal Representation: |
Samples were collected on a quarterly basis between March 1996 and December 2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
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DECISION ID |
5245 |
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| 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 |
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| Weight of Evidence: |
This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. None of the 6 samples exceed the Basin Plan water quality objective for zinc.
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. None of the 6 samples exceed the Basin Plan water quality objective for zinc 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. |
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| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
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| SWRCB Board Decision / Staff Recommendation: |
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| USEPA Decision: |
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Lines of Evidence (LOEs) for Decision ID 5245 |
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| LOE ID: |
872 |
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| Pollutant: |
Zinc |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
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| Beneficial Use: |
Municipal & Domestic Supply |
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| Number of Samples: |
6 |
| Number of Exceedances: |
0 |
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| Data and Information Type: |
Not Specified |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. between January 1996 and March 1999. None of the 6 samples were in exceedance. (SWRCB, 2003). |
| 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 zinc is 5.0 mg/L. |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
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| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at site SUA-0 near the surface. |
| Temporal Representation: |
Samples were collected between January 1996 and March 1999. Four samples were collected in 1996, one in 1998, and one in 1999. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
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DECISION ID |
5102 |
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| 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 |
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| Weight of Evidence: |
This pollutant is being considered for removal from the 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.
One line of evidence is available in the administrative record to assess the pollutant. Seven of 19 samples exceed the Basin Plan water quality objective for manganese.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list.
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. Seven of 19 samples exceed the Basin Plan water quality objective for manganese and this exceeds the allowable frequency listed in Table 4.1 of the Listing Policy.
4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
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| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
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| SWRCB Board Decision / Staff Recommendation: |
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| USEPA Decision: |
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Lines of Evidence (LOEs) for Decision ID 5102 |
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| LOE ID: |
862 |
| |
| Pollutant: |
Manganese |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
19 |
| Number of Exceedances: |
7 |
| |
| Data and Information Type: |
Not Specified |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. from January 1996 to September 2000. Seven of 19 samples were in exceedance and the criteria was exceeded more than 10% of the time in all 5 years. |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
The water quality objective for manganese in Sutherland Reservoir 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) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at site SUA-0 near the water's surface. |
| Temporal Representation: |
Samples were collected on a quarterly basis between January 1996 and September 2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |
| |
DECISION ID |
5123 |
| |
| Pollutant: |
pH |
| 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: |
This pollutant is being considered for removal from the section 303(d) list under section 4.2 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status.
One line of evidence is available in the administrative record to assess this pollutant. Ten of 19 samples exceeded the Basin Plan water quality objective for pH.
Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list.
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. Ten of 19 samples exceeded the Basin Plan water quality objective for pH and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy.
4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met. |
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| RWQCB Board Decision / Staff Recommendation: |
No new data were assessed for 2008. The Regional Board will update this decision when new data and information become available and are assessed. |
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| SWRCB Board Decision / Staff Recommendation: |
|
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| USEPA Decision: |
|
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Lines of Evidence (LOEs) for Decision ID 5123 |
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| LOE ID: |
865 |
| |
| Pollutant: |
pH (high) |
| LOE Subgroup: |
Pollutant-Water |
| Matrix: |
Water |
| Fraction: |
Total |
| |
| Beneficial Use: |
Municipal & Domestic Supply |
| |
| Number of Samples: |
19 |
| Number of Exceedances: |
10 |
| |
| Data and Information Type: |
PHYSICAL/CHEMICAL MONITORING |
| Data Used to Assess Water Quality: |
Data was collected at site SUA-0 by the City of San Diego Water Dept. between March 1996 and December 2000. Ten of 19 samples were in exceedance. |
| Data Reference: |
Placeholder reference 2006 303(d) |
| |
| Water Quality Objective/Criterion: |
From the Basin Plan: For inland surface waters and all beneficial uses, the WQO for pH is 6.5 (minimum) to 8.5 (maximum). |
| Objective/Criterion Reference: |
Placeholder reference 2006 303(d) |
| |
| Evaluation Guideline: |
|
| Guideline Reference: |
| |
| Spatial Representation: |
Samples were collected at site SUA-0 near the water surface. |
| Temporal Representation: |
Samples were collected on a quarterly basis between March 1996 and December 2000. |
| Environmental Conditions: |
|
| QAPP Information: |
Data used in 2002 assessment. |
| QAPP Information Reference(s): |