Draft 2008 California 303(d)/305(b) Integrated Report

Supporting Information

Regional Board 9 - San Diego Region

Water Body Name:	Barrett Lake
Water Body ID:	CAL9113000019980803101540
Water Body Type:	Lake & Reservoir

DECISION ID	16356
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 are available in the administrative record to assess this pollutant. Four of the 9 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 9 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 applicable water quality standards are not being exceeded.
SWRCB Board Decision / Staff Recommendation:
USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 16356

tr>

LOE ID:	6154
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 (conventional plus toxic pollutants)
Data Used to Assess Water Quality:	Four of the nine samples collected exceeded water quality standards. Samples were collected by the City of San Diego's Water Department. Samples were collected from 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:	Water 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 Barrett Lake 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:	The Horse Fire burned north of Barrett Lake in the Cleveland National Forest from July 23 - 31, 2006. Both exceedances occurred before the onset of the fire.
QAPP Information:	Samples were collected and analyzed according to the Water Quality Laboratory?s 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	16307
Pollutant:	Sodium
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. Five of the samples exceed the water quality objective. The exceedances may have been the result of the 2006 Horse Fire and further data should verify this. 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. Five of 8 samples exceeded the AGR standard however this may have been the result of 2006 Horse Fire. 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 16307

LOE ID:	6151
Pollutant:	Sodium
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Agricultural Supply
Number of Samples:	8
Number of Exceedances:	5
Data and Information Type:	Fixed station physical/chemical monitoring (conventional pollutants only)
Data Used to Assess Water Quality:	Five of the eigh samples collected exceeded water quality standards. Samples were collected by the City of San Diego's Water Department. Samples were collected from 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, the percent sodium objective was developed for the protection of agricultural uses from the potential hazard due to sodium in irrigation wters. The value of 60 percent sodium is based upon Water Quality Criteria, by McKee and Wolf, 1963 (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 Barrett Lake at ?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:	The Horse Fire burned north of Barrett Lake in the Cleveland National Forest from July 23 - 31, 2006.
QAPP Information:	Samples were collected and analyzed according to the Water Quality Laboratory?s 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	16358
Pollutant:	Total Trihalomethane (TTHM)
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 3.1 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 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. None of 8 samples exceeded the drinking water MCL standard 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:	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 16358

LOE ID:	6155
Pollutant:	Total Trihalomethane (TTHM)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	8
Number of Exceedances:	0
Data and Information Type:	Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality:	All eight samples collected exceeded water quality standards. Samples were collected by the City of San Diego's Water Department. Samples were collected from 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:	The US EPA has established a maximum contaminant level for trihalomethanes of an average annual concentration of 0.08 mg/L (U.S. EPA, 2008).
Objective/Criterion Reference:	Information Collection Rule. Trihalomethans (THM).
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	One surface water sample was collected per sampling event at Barrett Lake 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:	The Horse Fire burned north of Barrett Lake in the Cleveland National Forest from July 23 - 31, 2006. Both exceedances occurred before the onset of the fire.
QAPP Information:	Samples were collected and analyzed according to the Water Quality Laboratory?s 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	16355
Pollutant:	Perchlorate
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Sources:	Source Unknown
Expected TMDL Completion Date:	2019
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. Two of the 17 samples exceed the water quality objective. 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 the17 samples exceed the Secondary MCL drinking water standard for perchlorate and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
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 16355

LOE ID:	6152
Pollutant:	Perchlorate
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	None
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	17
Number of Exceedances:	2
Data and Information Type:	Fixed station physical/chemical (conventional plus toxic pollutants)
Data Used to Assess Water Quality:	Two of the 17 samples collected exceeded water quality standards. Samples were collected by the City of San Diego's Water Department. Samples were collected from 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 Obective/Criterion:	Waters designated for use as domestic or municipal supply shall not contain concentrations of inorganic chemicals in excess of the maximum contaminant levels (MCL) (RWQCB, 2007).
Objective/Criterion Reference:	Water Quality Control Plan for the San Diego Basin (9).
Evaluation Guideline:	The primary MCL for perchlorate is 6 ug/L (CDHP, 2007).
Guideline Reference:	Perchlorate in California Drinking Water: Update and Overview.
Spatial Representation:	One surface water sample was collected per sampling event at Barrett Lake at station 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:	The Horse Fire burned north of Barrett Lake in the Cleveland National Forest from July 23 - 31, 2006. Both exceedances occurred before the onset of the fire.
QAPP Information:	Samples were collected and analyzed according to the Water Quality Laboratory?s 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	16357
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 | Unknown Nonpoint 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 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. Eight of the 9 samples exceed the water quality objective. 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. Eight of 9 samples exceed the Basin Paln objective for total nitrogen as N and this exceeds the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
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 16357

LOE ID:	6153
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:	8
Data and Information Type:	Non-fixed-station monitoring (conventional during key seasons and flows)
Data Used to Assess Water Quality:	Eight of the nine samples collected exceeded water quality standards. Samples were collected by the City of San Diego's Water Department. Samples were collected from 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 Barrett Lake 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:	The Horse Fire burned north of Barrett Lake in the Cleveland National Forest from July 23 - 31, 2006. Both exceedances occurred before the onset of the fire.
QAPP Information:	Samples were collected and analyzed according to the Water Quality Laboratory?s 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	5715
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 14 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 for the pollutant are not exceeded.
USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 5715

LOE ID:	1593
Pollutant:	Aluminum
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	14
Number of Exceedances:	1
/td>
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 1996 to 2000. One of 14 samples was 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 Aluminum is 0.2 mg/L.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected at Barrett Reservoir at station BAA-0.
Temporal Representation:	Samples were collected on a quarterly basis from 01/1996 to 12/1998 and once each in 06/1999 and 03/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5619
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 frequenc 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 for the pollutant are not exceeded.
USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 5619

LOE ID:	1594
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 1996 and 1997. None of the 3 samples were in exceedance.
Data Reference:	Placeholder reference 2006 303(d)
Water Quality Objective/Criterion:	From the Basin Plan: For all 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 Barrett Reservoir at station BAA-0.
Temporal Representation:	One sample each was collected in 01/1996, 06/1996, and 03/1997.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5620
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:	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 exceeded the Basin Plan criteria, 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 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 for the pollutant are not exceeded.
USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 5620

LOE ID:	1595
Pollutant:	Arsenic
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:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Data were collected by the City of San Diego Water Dept. from 1996 to 2000. None of the 19 samples were in exceedance.
Data Reference:	Placeholder reference 2006 303(d)
Water Quality Objective/Criterion:	From the Basin Plan: For all 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 Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected on a quarterly basis from 01/1996 to 09/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5621
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:	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 exceeded the Basin Plan criteria, 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 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 for the pollutant are not exceeded.
USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 5621

LOE ID:	1596
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:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Data were collected by the City of San Diego Water Dept. from 1996 to 2000. None of the 19 samples were in exceedance.
Data Reference:	Placeholder reference 2006 303(d)
Water Quality Objective/Criterion:	From the Basin Plan: For all 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 Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected on a quarterly basis from 01/1996 to 09/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5622
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. A single sample was collected and it did not exceed the Basin Plan criteria, but the number of samples is insufficient to determine with the confidence and power required by 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 it cannot be determined if applicable water quality standards are exceeded.
USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 5622

LOE ID:	1597
Pollutant:	Cadmium
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	1
Number of Exceedances:	1
Data and Information Type:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Data were collected in 1996 by the City of San Diego Water Dept. The single collected sample was in exceedance.
Data Reference:	Placeholder reference 2006 303(d)
Waer Quality Objective/Criterion:	From the Basin Plan: For all 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 Barrett Reservoir station BAA-0.
Temporal Representation:	One sample was collected on 06/05/1996.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5788
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:	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 20 samples exceeded the Basin Plan criteria, 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. Te 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 for the pollutant are not exceeded.
USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 5788

LOE ID:	1598
Pollutant:	Chloride
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	20
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 1996 to 2000. None of the 20 samples was 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 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 Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected on a quarterly basis from 03/1996 to 12/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5789
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 11 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 for the pollutant are not exceeded.
USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 5789

LOE ID:	1599
Pollutant:	Chromium (total)
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	11
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 1996 to 2000. None of the 11 samples were in exceedance.
Data Reference:	Placeholder reference 2006 303(d)
Water Quality Objective/Criterion:	From the Basin Plan: For all 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 Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected 1-3 times per year from 01/1996 to 03/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5625
Pollutant:	Copper
Final Listing Decision:	Do Not List on 303(d) ist (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 6 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 for the pollutant are not exceeded.
USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 5625

LOE ID:	1601
Pollutant:	Copper
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 were collected by the City of San Diego Water Dept. from 1996 to 2000. None of the 6 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 copper is 1.0 mg/L.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected at Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected 1-2 times per year from 01/1996 to 03/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5626
Pollutant:	Ethylbenzene
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. A single sample was collected and it did not exceed the Basin Plan criteria, but the number of samples is insufficient to determine with the confidence and power required by 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 it cannot be determined if applicable water quality standards are exceeded.
USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 5626

LOE ID:	1602
Pollutant:	Ethylbenzene
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 were collected by the City of San Diego Water Dept. in 1996. One sample was collected. It was not 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 ethylbenzene is 0.7 mg/L.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected at Barrett Reservoir station BAA-0.
Temporal Representation:	One sample was collected on 09/09/1996.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5627
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:	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 exceeded the Basin Plan criteria, 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 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 for the pollutant are not exceeded.
USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 5627

LOE ID:	1603
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:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Data were collected by the City of San Diego Water Dept. from 1996 to 2000. None of the 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 Fluoride is 1.0 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 Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected on a quarterly basis from 03/1996 to 09/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment. QA=?
QAPP Information Reference(s):

DECISION ID	5628
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	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 5628

LOE ID:	1604
Pollutant:	Iron
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 1997-2000. None of the 3 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 iron is 0.3 mg/L.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected at Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected once each in 12/1997, 03/1998, and 12/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment. QA=?
QAPP Information Reference(s):

DECISION ID	5648
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. A single sample was collected and it did not exceed the Basin Plan criteria, but the number of samples is insufficient to determine with the confidence and power required by the Listing Policy. Based on the readily available data and informaton, 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 it cannot be determined if applicable water quality standards are exceeded.
USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 5648

LOE ID:	1606
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 were collected by the City of San Diego Water Dept. in 03/1999. One sample was collected. It was not in exceedance.
Data Reference:	Placeholder reference 2006 303(d)
Water Quality Objective/Criterion:	From the Basin Plan: For all 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 Barrett Reservoir station BAA-0.
Temporal Representation:	One sample was collected on 03/04/1999.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5649
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 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:

<table>

Lines of Evidence (LOEs) for Decision ID 5649

LOE ID:	1607
Pollutant:	Nickel
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 1996 and 1999. None of the 2 samples were in exceedance.
Data Reference:	Placeholder reference 2006 303(d)
Water Quality Objective/Criterion:	From the Basin Plan: For all 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 Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected once each in 06/1996 and 06/1999.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5657
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 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 5657

LOE ID:	1609
Pollutant:	Picloram
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 toAssess Water Quality:	Data were collected by the City of San Diego Water Dept. from 1998 to 2000. None of 4 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 Picloram is 0.5 mg/L.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected at Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected once each in 12/1998, 09/1999, 12/1999, and 06/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5658
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 QualityLimited 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 5658

LOE ID:	1610
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 1996 to 1997. None of 4 samples were in exceedance.
Data Reference:	Placeholder reference 2006 303(d)
Water Quality Objective/Criterion:	From the Basin Plan: For all 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 BarrettReservoir station BAA-0.
Temporal Representation:	Samples were collected once each in 09/1996, 03/1997, 09/1997, and 12/1997.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5659
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
Weight of Evidence:	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 20 samples exceeded the Basin Plan criteria, 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 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 for the pollutant are not exceeded.
USEPA Decision:

Lines of Evidence (LOEs) for Decision ID 5659

LOE ID:	1611
Pollutant:	Sulfates
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	20
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 1996 to 2000. None of the 20 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 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)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected at Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected on a quarterly basis from 03/1996 to 12/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5681
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
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 5681

LOE ID:	1613
Pollutant:	Toluene
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 1996. None of the 2 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 Toluene is 0.15 mg/L.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected at Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected once each in 03/1996 and 09/1996.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5660
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
Weight of Evidence:	One line of evidence is available in the administrative record to assess this pollutant. None of the 10 samples exceed the Basin Plan criteria and this does not exceed the alloable 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 5660

LOE ID:	1612
Pollutant:	Total Dissolved Solids
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	10
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 1998 to 2000. None of the 10 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 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)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected at Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected on a quarterly basis from 09/1998 to 12/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5682
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
Weight of Evidence:	One line of evidence is available in the administrative record to assess this pollutant. One of the 20 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 5682

LOE ID:	1614
Pollutant:	Turbidity
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	20
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 from 1996 to 2000. One of 20 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 turbidity is 5 ntu.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected at Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected on a quarterly basis from 03/1996 to 12/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5683
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 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 5683

<tr>

LOE ID:	1615
Pollutant:	Zinc
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 1996 and 1997. None of the 2 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 Zinc is 5.0 mg/L.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected at Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected once each on 06/05/1996 and 03/03/1997.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5790
Pollutant:	Color
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. Nine of 20 samples exceeded the Basin Plan criteria, and these 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 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 5790

LOE ID:	1600
Pollutant:	Color
LOE Subgroup:	Pollutant-Nuisance
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	20
Number of Exceedances:	9
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 1996 to 2000. Nine of the 20 samples were in exceedance and 4 of 20 samples measured color levels at 15 color units.
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 color is 15 units.
Objective/Criterion Reference:	Placeholder reference 2006 303(d)
Evaluation Guideline:
Guideline Reference:
Spatial Representation:	Samples were collected at Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected on a quarterly basis from 03/1996 to 12/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5629
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. Seven of 19 individual samples exceeded the Basin Plan criteria and the criteria was exceeded more than 10% of the time during the years 1996, 1997, 1998 and 1999. Tese 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 5629

LOE ID:	1605
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:	PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality:	Data were collected by the City of San Diego Water Dept. from 1996 to 2000. Seven of 19 samples exceeded 0.05 mg/L. This concentration was exceeded more than 10% of the time during the years 1996, 1997, 1998 and 1999.
Data Reference:	Placeholder reference 2006 303(d)
Water Quality Objective/Criterion:	The water quality objective for manganese in Barrett Lake 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 Barrett Reservoir site BAA-0.
Temporal Representation:	Samples were collected on a quarterly basis from 01/1996 to 09/2000.
Environmental Conditions:
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):

DECISION ID	5581
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:	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. Ten of 20 samples exceeded the Basin Plan objective, and these 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 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 5581

LOE ID:	1608
Pollutant:	pH
LOE Subgroup:	Pollutant-Water
Matrix:	Water
Fraction:	Total
Beneficial Use:	Municipal & Domestic Supply
Number of Samples:	20
Number of Exceedances:	10
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 1996 to 2000. Ten of 20 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 Barrett Reservoir station BAA-0.
Temporal Representation:	Samples were collected on a quarterly basis from 03/1996 to 12/2000.
QAPP Information:	Data used in 2002 assessment.
QAPP Information Reference(s):