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

Supporting Information

Regional Board 9 - San Diego Region

Water Body Name: Pine Valley Creek (Upper)
Water Body ID: CAR9114100020010924113027
Water Body Type: River & Stream
 
DECISION ID
7379
 
Pollutant: Enterococcus
Final Listing Decision: Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: List on 303(d) list (TMDL required list)(2006)
Revision Status Revised
Reason for Delisting: State determines water quality standard is being met
Impairment from Pollutant or Pollution: Pollutant
 
Weight of Evidence: This pollutant is being considered for removal from the section 303(d) list under section 4.3 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. Fourteen of samples exceeded the water quality objective for enterococcus.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for 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. Fourteen of 87 samples exceeded the enterococcus water quality objective and this does not exceed 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 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 removed from the section 303(d) list because applicable water quality standards for the pollutant are not being exceeded.
 
SWRCB Board Decision / Staff Recommendation: N/A
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 7379
 
LOE ID: 29790
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: None
 
Beneficial Use: Non-Contact Recreation
 
Number of Samples: 87
Number of Exceedances: 14
 
Data and Information Type: PWS pathogen monitoring (ambient water)
Data Used to Assess Water Quality: Samples were collected by the City of San Diego from January 1998 through February 2008. Fourteen of 87 samples exceeded the freshwater water quality objective.
Data Reference: Pine Valley Monitoring Data
 
Water Quality Objective/Criterion: Freshwater enterococci maximum for infrequently used areas is 151 colonies per 100 ml.
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin (9).
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at one station on Cottonwood Pine Valley Creek 0.25 miles upstream. Station ID is PVC1a
Temporal Representation: Samples were collected January 1998 through February 2008.
Environmental Conditions:
QAPP Information: Samples were collected in accordance with the City of San Diego Water Quality Laboratory's quality assurance plan.
QAPP Information Reference(s): Water Quality Laboratory. Quality Assurance Manual.
 
LOE ID: 4692
 
Pollutant: Enterococcus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Not Recorded
 
Beneficial Use: Water Contact Recreation
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Unspecified--This LOE is a placeholder to support a 303(d) listing decision made prior to 2006.
Data Reference: Placeholder reference pre-2006 303(d)
 
Water Quality Objective/Criterion: Unspecified
Objective/Criterion Reference: Placeholder reference pre-2006 303(d)
 
Evaluation Guideline: Unspecified
Guideline Reference: Placeholder reference pre-2006 303(d)
 
Spatial Representation: Unspecified
Temporal Representation: Unspecified
Environmental Conditions: Unspecified
QAPP Information: Unspecified
QAPP Information Reference(s):
 
DECISION ID
5176
 
Pollutant: Phosphorus
Final Listing Decision: Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: List on 303(d) list (TMDL required list)(2006)
Revision Status Revised
Reason for Delisting: Flaws in original listing
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.

Five lines of evidence are available in the administrative record to assess this pollutant. Six of 51 of samples exceeded 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 for 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. Six of 51 of samples exceeded the water quality objective for phosphorus. and this does not exceed 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 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 5176
 
LOE ID: 3373
 
Pollutant: Phosphorus
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: Phosphorus data was collected at 5 sample sites by the City of San Diego Water Dept. from 1/14/1998 to 8/18/1998. At site NPC3C, 0 of 10 samples were in exceedance.
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: For inland surface waters-streams and other flowing waters and for all beneficial uses, the WQO for total phosphorus is 0.1 mg/L. This appears to be the desired goal in order to prevent plant nuisance in streams and other flowing waters; not to be exceeded more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline: Use 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.
Guideline Reference: Placeholder reference 2006 303(d)
 
Spatial Representation: Phosphorus samples for this LOE were collected at site NPC3C. The exact location of this site is unknown. Samples were collected at 4 other sample sites in Pine Valley Creek. The proximity of the sites to each other is unknown.
Temporal Representation: Samples were collected on a monthly basis from 1/14/1998 to 8/18/1998.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3374
 
Pollutant: Phosphorus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 10
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Phosphorus data was collected at 5 sample sites by the City of San Diego Water Dept. from 1/14/1998 to 8/18/1998. At site NPC3D, 1 of 10 samples were in exceedance.
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: For inland surface waters-streams and other flowing waters and for all beneficial uses, the WQO for total phosphorus is 0.1 mg/L. This appears to be the desired goal in order to prevent plant nuisance in streams and other flowing waters; not to be exceeded more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline: Use 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.
Guideline Reference: Placeholder reference 2006 303(d)
 
Spatial Representation: Phosphorus samples for this LOE were collected at site NPC3D. The exact location of this site is unknown. Samples were collected at 4 other sample sites in Pine Valley Creek. The proximity of the sites to each other is unknown.
Temporal Representation: Samples were collected on a monthly basis from 1/14/1998 to 8/18/1998.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3375
 
Pollutant: Phosphorus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 11
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Phosphorus data was collected at 5 sample sites by the City of San Diego Water Dept. from 1/14/1998 to 9/15/1998. At site PVC1A, 2 of 11 samples were in exceedance.
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: For inland surface waters-streams and other flowing waters and for all beneficial uses, the WQO for total phosphorus is 0.1 mg/L. This appears to be the desired goal in order to prevent plant nuisance in streams and other flowing waters; not to be exceeded more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline: Use 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.
Guideline Reference: Placeholder reference 2006 303(d)
 
Spatial Representation: Phosphorus samples for this LOE were collected at site PVC1A. The exact location of this site is unknown. Samples were collected at 4 other sample sites in Pine Valley Creek. The proximity of the sites to each other is unknown.
Temporal Representation: Samples were collected on a monthly basis from 1/14/1998 to 9/15/1998.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3371
 
Pollutant: Phosphorus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 10
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Phosphorus data was collected at 5 sample sites by the City of San Diego Water Dept. from 1/14/1998 to 8/18/1998. At site NPC3A, 1 of 10 samples was in exceedance.
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: For inland surface waters-streams and other flowing waters and for all beneficial uses, the WQO for total phosphorus is 0.1 mg/L. This appears to be the desired goal in order to prevent plant nuisance in streams and other flowing waters; not to be exceeded more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline: Use 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.

Certain exceptions to these objectives are described in Chapter 4 of the Basin Plan in the sections titled "Discharges to Coastal Lagoons from Pilot Water Reclamation Projects" and "Discharges to Inland Surface Waters".
Guideline Reference: Placeholder reference 2006 303(d)
 
Spatial Representation: Samples for this LOE were collected at site NPC3A in Pine Valley Creek. The exact location of this site is unknown. Samples were collected at 4 more sample sites in Pine Valley Creek.
Temporal Representation: Samples were collected monthly from January 14, 1998 to August 18, 1998.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3372
 
Pollutant: Phosphorus
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 10
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Phosphorus data was collected at 5 sample sites by the City of San Diego Water Dept. from 1/14/1998 to 8/18/1998. At site NPC3B, 2 of 10 samples were in exceedance.
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: For inland surface waters-streams and other flowing waters and for all beneficial uses, the WQO for total phosphorus is 0.1 mg/L. This appears to be the desired goal in order to prevent plant nuisance in streams and other flowing waters; not to be exceeded more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline: Use 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.
Guideline Reference: Placeholder reference 2006 303(d)
 
Spatial Representation: Phosphorus samples for this LOE were collected at site NPC3B. The exact location of this site is unknown. Samples were collected at 4 other sample sites in Pine Valley Creek. The proximity of the sites to each other is unknown.
Temporal Representation: Samples were collected monthly from 1/14/1998 to 8/18/1998.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
DECISION ID
17902
 
Pollutant: Benthic Community Effects
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: New Decision
Revision Status Revised
Impairment from Pollutant or Pollution: Pollution
 
Weight of Evidence: Benthic Community Effects is being considered for placement on the section 303(d) list under sections 3.9 and 3.2 of the Listing Policy. Under section 3.9, an additional line of evidence associating the Benthic Community Effects with a water or sediment concentration of pollutants is necessary to assess listing status.

One line of evidence is available in the administrative record to assess this indicator. 1 of 4 samples exceeded the water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing Benthic Community Effects in this water segment on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that:
1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. 1 of 4 samples exceeded the Index of Biological Integrity (IBI) value of "poor" water quality for this area 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 5 samples is needed for application of Table 3.2.
4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
 
RWQCB Board Decision / Staff Recommendation: After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because it cannot be determined if applicable water quality standards are not being exceeded.
 
SWRCB Board Decision / Staff Recommendation:
 
USEPA Decision:
 
 
Lines of Evidence (LOEs) for Decision ID 17902
 
LOE ID: 26438
 
Pollutant: Benthic Community Effects
LOE Subgroup: Adverse Biological Responses
Matrix: Water
Fraction: None
 
Beneficial Use: Warm Freshwater Habitat
 
Number of Samples: 4
Number of Exceedances: 1
 
Data and Information Type: Benthic macroinvertebrate surveys
Data Used to Assess Water Quality: Four samples of IBI data were taken from May 2001 to 2007 at one sampling site. Of the total number of samples, one sample exceeded the IBI impairment threshold.
Data Reference: Fish and Game IBI Data
  2007 SDRWQCB Bioassessment Data
  Southern California Postfire Study. IBI. 2007.
 
Water Quality Objective/Criterion: From the San Diego Basin Plan the objective is: All waters shall be maintained free of toxic substances in concentrations that are toxic to, or that produce detrimental physiological responses in human, plant, animal, or aquatic life. Compliance with this objective will be determined by use of indicator organisms, analyses of species diversity, population density, growth anomalies, bioassays of appropriate duration, or other appropriate methods as specified by the Regional Board. (SDRWQCB, 1995)
Objective/Criterion Reference: Water Quality Control Plan for the San Diego Basin (9).
 
Evaluation Guideline: The Index of Biological Integrity (IBI) is an analytical tool that can be used to assess the biological and physical condition of streams and rivers within a zero to one hundred scoring range: Very Poor 0-19, Poor 20-39, Fair 40-59, Good 60- 79, Very Good 80-100. The IBI score of 39 was set as an impairment threshold because it is a statistical criterion of two standard deviations below the mean reference site score which defines the boundary between 'fair' and 'poor' IBI creek conditions. (Ode, p. 9)
Guideline Reference: "A Quantitative Tool for Assessing the Integrity of Southern Coastal California Streams". Environmental Management. Volume 35, number 1 (2005): 1-13.
 
Spatial Representation: Samples were collected at one site: 911NPCNCx on Pine Valley Creek (Upper).
Temporal Representation: Sampling occurred during four events from May 2001 to 2007.
Environmental Conditions:
QAPP Information: Quality Control for collection and identification was conducted in accordance with the Quality Assurance Project Plan for the California Stream Bioassessment Procedure and the State of California, California Monitoring an Assessment Program: "CMAP", Quality Assurance Project Plan.
QAPP Information Reference(s): State of California, California Monitoring and Assessment Program: "CMAP".
  Quality Assurance Project Plan for the California Stream Bioassessment Procedure
 
DECISION ID
5222
 
Pollutant: Nitrite
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2006)
Revision Status Original
Impairment from Pollutant or Pollution: Pollutant
 
Weight of Evidence: Two lines of evidence are 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 5222
 
LOE ID: 3409
 
Pollutant: Nitrite
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: Nitrite samples were collected at site PVC1A by the City of San Diego Water Dept. on May 19, 1997 and October 9, 1997. One sample was collected on each date, giving a total of 2 samples. There were no exceedances of 2 samples. (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 Nitrite (as N) is 1.0 mg/L.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at sample site PVC1A in Pine Valley Creek. Samples were also collected at PVC1B.
Temporal Representation: One sample was collected on May 19, 1997 and one was collected on October 9, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3410
 
Pollutant: Nitrite
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 PCV1B by the City of San Diego Water Dept. on May 20, 1997. One sample was collected and 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 Nitrite (as N) is 1.0 mg/L.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: One sample was collected at site PVC1B in Pine Valley Creek. Other samples were collected from site PVC1A.
Temporal Representation: The sample was collected on May 20, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
DECISION ID
5219
 
Pollutant: Oxygen, Dissolved
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2006)
Revision Status Original
Impairment from Pollutant or Pollution: Pollutant
 
Weight of Evidence: Nine lines of evidence are available in the administrative record to assess this pollutant. Based on Table 3.2 in the Policy, the number of exceedences of this pollutant is below the minimum number of measured exceedences needed to place a water segment on the section 303(d) list for toxicants. None of the 58+ samples exceeded the Basin Plan criteria (some LOEs only stated that 'multiple' samples were taken with no exceedences, however 58 samples were accounted for).

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 5219
 
LOE ID: 3387
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site PVC1B by the City of San Diego Water Dept. on February 19, 1997 and May 20, 1997. On each date, multiple samples were taken in approximately 1 hour. For data assessment, an average was calculated for these samples on each day. The average of 8 samples was taken for February 19, and an average of 4 samples was calculated for May 20. None of the samples or averages were in exceedance. (SWRCB, 2003).
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: Dissolved oxygen levels shall not be less than 5.0 mg/l in inland surface waters with designated MAR or WARM beneficial uses or less than 6.0 mg/l in waters with designated COLD beneficial uses. The annual mean dissolved oxygen concentrations shall not be less than 7 mg/l more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site PVC1B in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected in the morning on February 19, 1997 and May 20, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3390
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site SPC2 by the City of San Diego Water Dept. on March 13, 1997 and March 31, 1997. On each date, multiple samples were taken within 5 minutes. For data assessment, an average was calculated for these samples on each day. The average of 2 samples was taken for March 13, and an average of 4 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: Dissolved oxygen levels shall not be less than 5.0 mg/l in inland surface waters with designated MAR or WARM beneficial uses or less than 6.0 mg/l in waters with designated COLD beneficial uses. The annual mean dissolved oxygen concentrations shall not be less than 7 mg/l more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site SPC2 in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around 10am on March 13, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3383
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site NPC3B by the City of San Diego Water Dept. on March 13 and March 31, 1997. Multiple samples were collected within 5 minutes. For data assessment, an average was calculated for these samples. None of the samples or averages were in exceedance. (SWRCB, 2003).
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: Dissolved oxygen levels shall not be less than 5.0 mg/l in inland surface waters with designated MAR or WARM beneficial uses or less than 6.0 mg/l in waters with designated COLD beneficial uses. The annual mean dissolved oxygen concentrations shall not be less than 7 mg/l more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site NPC3B in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected on March 13 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3389
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site NPC2 by the City of San Diego Water Dept. on March 13, 1997 and March 31, 1997. On each date, multiple samples were taken within 5 minutes. For data assessment, an average was calculated for these samples on each day. The average of 6 samples was taken for March 13, and an average of 3 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: Dissolved oxygen levels shall not be less than 5.0 mg/l in inland surface waters with designated MAR or WARM beneficial uses or less than 6.0 mg/l in waters with designated COLD beneficial uses. The annual mean dissolved oxygen concentrations shall not be less than 7 mg/l more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site NPC2 in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around noon and 1pm on March 13, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3388
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site PVC2 by the City of San Diego Water Dept. on March 19, 1997. Multiple samples were taken within 1 hour. For data assessment, an average was calculated for these samples. The average of 6 samples was taken for March 19. None of the samples or averages were in exceedance. (SWRCB, 2003).
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: Dissolved oxygen levels shall not be less than 5.0 mg/l in inland surface waters with designated MAR or WARM beneficial uses or less than 6.0 mg/l in waters with designated COLD beneficial uses. The annual mean dissolved oxygen concentrations shall not be less than 7 mg/l more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site PVC2 in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected on March 19, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3385
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 7
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site NPC3D by the City of San Diego Water Dept. on March 13, 1997 and March 31, 1997. On each date, multiple samples were taken within 2 minutes. For data assessment, an average was calculated for these samples on each day. The average of 3 samples was taken for March 13, and an average of 4 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: Dissolved oxygen levels shall not be less than 5.0 mg/l in inland surface waters with designated MAR or WARM beneficial uses or less than 6.0 mg/l in waters with designated COLD beneficial uses. The annual mean dissolved oxygen concentrations shall not be less than 7 mg/l more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site NPC3D in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around 10am on March 13, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3386
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site PVC1A by the City of San Diego Water Dept. on 4 days between March 1997 and October 1997. On each date, multiple samples were taken within an hour. For data assessment, an average was calculated for these samples on each day. The number of samples for each day ranged from 4 to 7. None of the samples or averages were in exceedance. (SWRCB, 2003).
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: Dissolved oxygen levels shall not be less than 5.0 mg/l in inland surface waters with designated MAR or WARM beneficial uses or less than 6.0 mg/l in waters with designated COLD beneficial uses. The annual mean dissolved oxygen concentrations shall not be less than 7 mg/l more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site PVC1A in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected from March 13, 1997 to October 9, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3384
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site NPC3C by the City of San Diego Water Dept. on January 1, 1997 and March 31, 1997. On each date, multiple samples were taken within 20 minutes. For data assessment, an average was calculated for these samples on each day. The average of 5 samples was taken for Jan. 1, and an average of 4 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: Dissolved oxygen levels shall not be less than 5.0 mg/l in inland surface waters with designated MAR or WARM beneficial uses or less than 6.0 mg/l in waters with designated COLD beneficial uses. The annual mean dissolved oxygen concentrations shall not be less than 7 mg/l more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site NPC3C in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around 11am on January 1, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3382
 
Pollutant: Oxygen, Dissolved
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 9
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site NPC3A by the City of San Diego Water Dept. on March 13, 1997 and March 31, 1997. On each date, multiple samples were taken within 5 minutes. For data assessment, an average was calculated for these samples on each day. The average of 5 samples was taken for March 13, and an average of 4 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
Data Reference: Placeholder reference 2006 303(d)
 
Water Quality Objective/Criterion: From the Basin Plan: Dissolved oxygen levels shall not be less than 5.0 mg/l in inland surface waters with designated MAR or WARM beneficial uses or less than 6.0 mg/l in waters with designated COLD beneficial uses. The annual mean dissolved oxygen concentrations shall not be less than 7 mg/l more than 10% of the time.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site NPC3A in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected on March 13, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
DECISION ID
5221
 
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: Nine lines of evidence are available in the administrative record to assess this pollutant. Based on Table 3.2 in the Policy, the number of exceedences of this pollutant is below the minimum number of measured exceedences needed to place a water segment on the section 303(d) list for toxicants. None of the 109+ samples exceeded the Basin Plan criteria (some LOEs only stated that 'multiple' samples were taken with no exceedences, however 109 samples were accounted for).

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 5221
 
LOE ID: 3376
 
Pollutant: Total Dissolved Solids
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 51
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: TDS data was collected at 5 sites in Pine Valley Creek by the City of San Diego Water Dept. from 1/14/1998 to 9/15/1998. There were no exceedances at any of the sites. A total of 51 samples were collected; 10 at all sites, except PVC1A, where 11 samples were collected. (SWRCB, 2003).
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 total dissolved solids is 500. 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 5 sites in Pine Valley Creek. These samples are labeled NPC3A-D, and PVC1A. The locations of these sites and distances from each other are unknown.
Temporal Representation: Samples were collected on a monthly basis from 1/14/1998 to 9/15/1998.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3408
 
Pollutant: Total Dissolved Solids
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site SPC2 by the City of San Diego Water Dept. on March 13, 1997 and March 31, 1997. On each date, multiple samples were taken within 5 minutes. For data assessment, an average was calculated for these samples on each day. The average of 2 samples was taken for March 13, and an average of 4 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
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. 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 SPC2 in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around 10am on March 13, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3400
 
Pollutant: Total Dissolved Solids
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site NPC3A by the City of San Diego Water Dept. on March 13, 1997 and March 31, 1997. On each date, multiple samples were taken within 5 minutes. For data assessment, an average was calculated for these samples on each day. The average of 5 samples was taken for March 13, and an average of 4 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
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. 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 NPC3A in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around 11am and noon on March 13, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3402
 
Pollutant: Total Dissolved Solids
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site NPC3C by the City of San Diego Water Dept. on January 1, 1997 and March 31, 1997. On each date, multiple samples were taken within 20 minutes. For data assessment, an average was calculated for these samples on each day. The average of 5 samples was taken for Jan. 1, and an average of 4 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
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. 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 NPC3C in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around 11am on January 1, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3405
 
Pollutant: Total Dissolved Solids
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site PVC1B by the City of San Diego Water Dept. on February 19, 1997 and May 20, 1997. On each date, multiple samples were taken in approximately 1 hour. For data assessment, an average was calculated for these samples on each day. The average of 8 samples was taken for February 19, and an average of 4 samples was calculated for May 20. None of the samples or averages were in exceedance. (SWRCB, 2003).
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. 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 PVC1B in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected in the morning on February 19, 1997 and May 20, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3407
 
Pollutant: Total Dissolved Solids
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site NPC2 by the City of San Diego Water Dept. on March 13, 1997 and March 31, 1997. On each date, multiple samples were taken within 5 minutes. For data assessment, an average was calculated for these samples on each day. The average of 6 samples was taken for March 13, and an average of 3 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
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. 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 NPC2 in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around noon and 1pm on March 13, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3406
 
Pollutant: Total Dissolved Solids
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site PVC2 by the City of San Diego Water Dept. on March 19, 1997. Multiple samples were taken within 1 hour. For data assessment, an average was calculated for these samples. The average of 6 samples was taken for March 19. None of the samples or averages were in exceedance. (SWRCB, 2003).
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. 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 PVC2 in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around 10am on March 19, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3403
 
Pollutant: Total Dissolved Solids
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site NPC3D by the City of San Diego Water Dept. on March 13, 1997 and March 31, 1997. On each date, multiple samples were taken within 2 minutes. For data assessment, an average was calculated for these samples on each day. The average of 3 samples was taken for March 13, and an average of 4 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
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. 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:
Temporal Representation: Samples were collected at site NPC3D in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Environmental Conditions: Samples were collected around 10am on March 13, 1997 and March 31, 1997.
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3404
 
Pollutant: Total Dissolved Solids
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site PVC1A by the City of San Diego Water Dept. on 4 days between March 1997 and October 1997. On each date, multiple samples were taken within an hour. For data assessment, an average was calculated for these samples on each day. The number of samples for each day ranged from 4 to 7. None of the samples or averages were in exceedance. (SWRCB, 2003).
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. 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 PVC1A in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around between 8:45am and 2:12pm from March 13, 1997 to October 9, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3401
 
Pollutant: Total Dissolved Solids
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total Dissolved
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 0
Number of Exceedances: 0
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Data was collected at sample site NPC3B by the City of San Diego Water Dept. on March 13 and March 31, 1997. Multiple samples were collected within 5 minutes. For data assessment, an average was calculated for these samples. None of the samples or averages were in exceedance. (SWRCB, 2003).
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. 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 NPC3B in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected between 10am and noon on March 13 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
DECISION ID
5220
 
Pollutant: pH
Final Listing Decision: Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: Do Not List on 303(d) list (TMDL required list)(2006)
Revision Status Original
Impairment from Pollutant or Pollution: Pollutant
 
Weight of Evidence: Nine lines of evidence are available in the administrative record to assess this pollutant. Based on Table 3.2 in the Policy, the number of exceedences of this pollutant is below the minimum number of measured exceedences needed to place a water segment on the section 303(d) list for toxicants. None of the 58+ samples exceeded the Basin Plan criteria (some LOEs only stated that 'multiple' samples were taken with no exceedences, however 58 samples were accounted for).

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 5220
 
LOE ID: 3392
 
Pollutant: pH
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 sample site NPC3B by the City of San Diego Water Dept. on March 13 and March 31, 1997. Multiple samples were collected within 5 minutes. For data assessment, an average was calculated for these samples. None of the samples or averages were in exceedance. (SWRCB, 2003).
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 NPC3B in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected between 10am and noon on March 13 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3391
 
Pollutant: pH
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 sample site NPC3A by the City of San Diego Water Dept. on March 13, 1997 and March 31, 1997. On each date, multiple samples were taken within 5 minutes. For data assessment, an average was calculated for these samples on each day. The average of 5 samples was taken for March 13, and an average of 4 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
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 NPC3A in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around 11am and noon on March 13, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3395
 
Pollutant: pH
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 sample site PVC1A by the City of San Diego Water Dept. on 4 days between March 1997 and October 1997. On each date, multiple samples were taken within an hour. For data assessment, an average was calculated for these samples on each day. The number of samples for each day ranged from 4 to 7. None of the samples or averages were in exceedance. (SWRCB, 2003).
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 PVC1A in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around between 8:45am and 2:12pm from March 13, 1997 to October 9, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3394
 
Pollutant: pH
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 sample site NPC3D by the City of San Diego Water Dept. on March 13, 1997 and March 31, 1997. On each date, multiple samples were taken within 2 minutes. For data assessment, an average was calculated for these samples on each day. The average of 3 samples was taken for March 13, and an average of 4 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
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 NPC3D in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around 10am on March 13, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3393
 
Pollutant: pH
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 sample site NPC3C by the City of San Diego Water Dept. on January 1, 1997 and March 31, 1997. On each date, multiple samples were taken within 20 minutes. For data assessment, an average was calculated for these samples on each day. The average of 5 samples was taken for Jan. 1, and an average of 4 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
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 NPC3C in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around 11am on January 1, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3399
 
Pollutant: pH
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 sample site SPC2 by the City of San Diego Water Dept. on March 13, 1997 and March 31, 1997. On each date, multiple samples were taken within 5 minutes. For data assessment, an average was calculated for these samples on each day. The average of 2 samples was taken for March 13, and an average of 4 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
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 SPC2 in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around 10am on March 13, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3398
 
Pollutant: pH
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 sample site NPC2 by the City of San Diego Water Dept. on March 13, 1997 and March 31, 1997. On each date, multiple samples were taken within 5 minutes. For data assessment, an average was calculated for these samples on each day. The average of 6 samples was taken for March 13, and an average of 3 samples was calculated for March 31. None of the samples or averages were in exceedance. (SWRCB, 2003).
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 NPC2 in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around noon and 1pm on March 13, 1997 and March 31, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3397
 
Pollutant: pH
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 sample site PVC2 by the City of San Diego Water Dept. on March 19, 1997. Multiple samples were taken within 1 hour. For data assessment, an average was calculated for these samples. The average of 6 samples was taken for March 19. None of the samples or averages were in exceedance. (SWRCB, 2003).
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 PVC2 in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected around 10am on March 19, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3396
 
Pollutant: pH
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 sample site PVC1B by the City of San Diego Water Dept. on February 19, 1997 and May 20, 1997. On each date, multiple samples were taken in approximately 1 hour. For data assessment, an average was calculated for these samples on each day. The average of 8 samples was taken for February 19, and an average of 4 samples was calculated for May 20. None of the samples or averages were in exceedance. (SWRCB, 2004).
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 PVC1B in Pine Valley Creek. Samples were also collected from 8 other sites along Pine Valley Creek.
Temporal Representation: Samples were collected in the morning on February 19, 1997 and May 20, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
DECISION ID
5193
 
Pollutant: Turbidity
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 quantity requirements of section 6.1.5 of the Policy.
2. The data used satisfies the data quality requirements of section 6.1.4 of the Policy.
3. Eleven of 53 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 5193
 
LOE ID: 3381
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 11
Number of Exceedances: 3
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Samples were collected at site PVC1A by the City of San Diego Water Dept. from 1/14/1998 to 9/15/1998. Of 11 samples, 3 exceeded the WQO for municipal beneficial uses.
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 units. For inland surface waters and all other beneficial uses, the WQO for turbidity is 20 ntu.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site PVC1A. The exact location of this site is unknown. Samples were collected at 4 other sites in the creek. The proximity of these sites to each other is unknown.
Temporal Representation: Samples were collected monthly between 1/14/1998 and 9/15/1998.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3412
 
Pollutant: Turbidity
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: One sample was collected at site PVC1B by the City of San Diego Water Dept. on May 20, 1997. The single sample 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 turbidity is 5 units. For inland surface waters with all other beneficial uses, the WQO is 20 units.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: The sample was collected at site PVC1B in Pine Valley Creek. Other samples were collected at PVC1A.
Temporal Representation: One sample was collected on May 20, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3411
 
Pollutant: Turbidity
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: Samples were collected at site PVC1A by the City of San Diego Water Dept. on May 19, 1997 and October 9, 1997. Two samples were collected (one on each day) and none 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 units. For inland surface waters with all 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 sample site PVC1A. Another sample was collected at site PVC1B.
Temporal Representation: Samples were collected once on each day on May 19, 1997 and October 9, 1997.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3378
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 10
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Samples were collected at site NPC3B by the City of San Diego Water Dept. from 1/14/1998 to 8/18/1998. Of 10 samples, 1 exceeded the WQO for municipal beneficial uses.
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 units. For inland surface waters and all other beneficial uses, the WQO for turbidity is 20 ntu.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site NPC3B. The exact location of this site is unknown. Samples were collected at 4 other sites in the creek. The proximity of these sites to each other is unknown.
Temporal Representation: Samples were collected monthly between 1/14/1998 and 8/18/1998.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3377
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 10
Number of Exceedances: 1
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Samples were collected at site NPC3A by the City of San Diego Water Dept. from 1/14/1998 to 8/18/1998. Of 10 samples, 1 exceeded the WQO for municipal beneficial uses.
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 units. For inland surface waters and all other beneficial uses, the WQO for turbidity is 20 ntu.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site NPC3A. The exact location of this site is unknown. Samples were collected at 4 other sites in the creek. The proximity of these sites to each other is unknown.
Temporal Representation: Samples were collected monthly between 1/14/1998 and 8/18/1998.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3380
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 9
Number of Exceedances: 4
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Samples were collected at site NPC3D by the City of San Diego Water Dept. from 1/14/1998 to 7/14/1998. Of 9 samples, 4 exceeded the WQO for municipal beneficial uses.
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 units. For inland surface waters and all other beneficial uses, the WQO for turbidity is 20 ntu.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site NPC3D. The exact location of this site is unknown. Samples were collected at 4 other sites in the creek. The proximity of these sites to each other is unknown.
Temporal Representation: Samples were collected monthly between 1/14/1998 and 7/14/1998.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):
 
LOE ID: 3379
 
Pollutant: Turbidity
LOE Subgroup: Pollutant-Water
Matrix: Water
Fraction: Total
 
Beneficial Use: Municipal & Domestic Supply
 
Number of Samples: 10
Number of Exceedances: 2
 
Data and Information Type: PHYSICAL/CHEMICAL MONITORING
Data Used to Assess Water Quality: Samples were collected at site NPC3C by the City of San Diego Water Dept. from 1/14/1998 to 8/18/1998. Of 10 samples, 2 exceeded the WQO for municipal beneficial uses.
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 units. For inland surface waters and all other beneficial uses, the WQO for turbidity is 20 ntu.
Objective/Criterion Reference: Placeholder reference 2006 303(d)
 
Evaluation Guideline:
Guideline Reference:
 
Spatial Representation: Samples were collected at site NPC3C. The exact location of this site is unknown. Samples were collected at 4 other sites in the creek. The proximity of these sites to each other is unknown.
Temporal Representation: Samples were collected monthly between 1/14/1998 to 8/18/1998.
Environmental Conditions:
QAPP Information: Data used in 2002 assessment.
QAPP Information Reference(s):