Final California 2012 Integrated Report( 303(d) List/305(b) Report)

Supporting Information

Regional Board 4 - Los Angeles Region

Water Body Name:	San Jose Creek Reach 1 (SG Confluence to Temple St.)
Water Body ID:	CAR4053100019980918090950
Water Body Type:	River & Stream


DECISION ID	18565	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

Pollutant:	Excess Algal Growth
Final Listing Decision:	Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Delist from 303(d) list (TMDL required list)(2010)
Revision Status	Original
Reason for Delisting:	Flaws in original listing
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. This condition is being considered for delisting under section 4.7 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. It is not known if the algae information is backed by pollutant data. Algae should not be placed on the section 303(d) list because it is not a pollutant or toxicity (section 2 of the Listing Policy). Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification in favor of removing this water segment-pollutant combination from the Section 303(d) list.

Regional Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle.

State Board Staff Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 18565, Excess Algal Growth	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

LOE ID:

2569

Pollutant:

Excess Algal Growth

LOE Subgroup:

Pollutant-Nuisance

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Seven observations with 2 of the observations judged to be not supporting beneficial uses (LACSD, 2004b).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Basin Plan: Waters shall not contain biostimulatory substances in concentrations that promote aquatic growth to the extent that such growth causes nuisance or adversely affects beneficial uses.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

The presence of algae in the water segment was used as the guideline. The rankings were subjective and assigned to water bodies by one person for consistency.

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

One sampling location.

Temporal Representation:

Observations made between 1990 and 1993. Samples taken in different seasons with 4 observations in 1992.

Environmental Conditions:

QAPP Information:

No QA information provided.

QAPP Information Reference(s):


DECISION ID	19271	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

Pollutant:	Selenium
Final Listing Decision:	Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Delist from 303(d) list (TMDL required list)(2010)
Revision Status	Original
Reason for Delisting:	Applicable WQS attained; reason for recovery unspecified
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. This pollutant is being considered for removal from the section 303(d) list under section 4.1 of the Listing Policy. Under this section a single line of evidence is necessary to assess listing status. Three lines of evidence are available in the administrative record to assess this pollutant. 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. 12 of 171 samples exceeded the California Toxics Rule Criterion Continuous Concentration for selenium and this does not exceed the allowable frequency listed in Table 4.1 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. 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.

State Board Staff Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 19271, Selenium	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

LOE ID:

25338

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Aquatic Life Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fixed station physical/chemical (conventional plus toxic pollutants)

Data Used to Assess Water Quality:

Zero of 86 samples exceeded the California Toxics Rule Criterion Continuous Concentration for Selenium. Water quality samples were taken and analyzed for Selenium in accordance with the Sanitation Districts of Los Angeles County permit monitoring and testing parameters.

Data Reference:

NPDES receiving water monitoring reports for Long Beach Water Reclamation Plant (NPDES No. CA0054119), Los Coyotes Water Reclamation Plant (NPDES No. CA0053716), Pomona Water Reclamation Plant (NPDES No. CA0053911), San Jose Creek Water Reclamation Plant (NPDES No. CA0053619), and Whittier Narrows Creek Water Reclamation Plant (NPDES No. CA0054011).

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

CTR Dissolved Selenium Criterion for continuous concentration (CCC) in water for the protection of aquatic life: 5 ug/L.

Objective/Criterion Reference:

Water Quality Standards 2000. Establishment of numeric criteria for priority toxic pollutants for the State of California: Rules and regulations. Federal Register Vol. 65, No. 97. Washington, D.C.: Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Five stations: RA (above WRP), RC (Below WRP), RD (end of concrete-lined portion of San Jose Creek), C1 (above SJWRP 002), C2 (below SJWRP 002)

Temporal Representation:

Grab samples were taken and analyzed on a monthly basis from August 2005 to February 2007.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in Sanitation Districts of Los Angeles County (NPDES No. CA0053911 and CA0053619) Monitoring and Reporting Program.

QAPP Information Reference(s):

San Jose Creek Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0053911 (County Sanitation Districts of Los Angeles County)

Pomona Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0053619 (County Sanitation Districts of Los Angeles County)

Line of Evidence (LOE) for Decision ID 19271, Selenium	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

LOE ID:

26871

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Aquatic Life Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Fixed station physical/chemical (conventional plus toxic pollutants)

Data Used to Assess Water Quality:

One of seven samples exceeded the California Toxics Rule Criterion Continuous Concentration for Selenium. Water quality samples were taken and analyzed for Selenium in accordance with the Municipal Separate Storm Sewer System (MS4) permit monitoring and testing parameters.

Data Reference:

2006-2007 Monitoring Data (MS4 Data) for Tributaries of the San Gabriel River Watershed- CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the Incorporated Cities therein, Except the City of Long Beach.

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

CTR Dissolved Selenium Criterion for continuous concentration (CCC) in water for the protection of aquatic life: 5 ug/L.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The Los Angeles County Department of Public Works conducted sampling at the mass emission monitoring station TS15 upstream of the confluence of Puente Creek.

Temporal Representation:

Grab samples were taken approximately six per year (four wet-weather events and two dry-weather events), from October 2003 through April 2007.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program.

QAPP Information Reference(s):

Monitoring and Reporting Program - CI 6948 for order no. 01-182 NPDES No. CAS004001 Municipal Storm Water and Urban Runoff Discharges within the County of Los Angeles, and the incorporated cities, except the City of Long Beach

Line of Evidence (LOE) for Decision ID 19271, Selenium	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

LOE ID:

2571

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Available data indicate numeric CTR standards are violated for total selenium. There were 11 out of 78 samples that exceeded the CTR value for selenium (USEPA, 2007).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Basin Plan: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

The CTR value for selenium (chronic) is 5 ppb.

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Samples were collected throughout the water body.

Temporal Representation:

Environmental Conditions:

QAPP Information:

Data record: 2003-2006, LA RWQCB comment letter, 2006

QAPP Information Reference(s):


DECISION ID	23738	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

Pollutant:	Coliform Bacteria
Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not Delist from 303(d) list (TMDL required list)(2010)
Revision Status	Original
Sources:	Source Unknown
Expected TMDL Completion Date:	2009
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. 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. Three lines of evidence are available in the administrative record to assess pollutant. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against removing this water segment-pollutant combination from the section 303(d) list. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. 140 of 261 samples exceeded the Basin Plan single sample indicator bacteria objectives and this exceeds the allowable frequency listed in Table 4.2 of the Listing Policy. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be removed from the section 303(d) list because applicable water quality standards for the pollutant are being exceeded.

State Board Staff Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 23738, Coliform Bacteria	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

LOE ID:

25341

Pollutant:

Indicator Bacteria

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

255

Number of Exceedances:

135

Data and Information Type:

Other Agencies/Organizations provided monitoring data

Data Used to Assess Water Quality:

135 of 255 samples exceeded the single-sample limit specified in the Basin Plan. A total of 25 of 36 samples exceeded the geometric mean limit specified in the Basin Plan amendment. Samples were taken on a weekly and monthly basis in compliance with the Los Angeles County Sanitation Districts NPDES Permit (NPDES No. CA0053911 and CA0053619) Monitoring and Reporting Program.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Basin Plan bacteria objectives state that to protect water contact recreation in fresh waters individual samples shall not exceed the following limits: fecal coliform density shall not exceed 400/100 ml; and E. coli density shall not exceed 235/100 ml. The bacteria objectives also establish that the geometric means of individual samples shall not exceed the following limits: the fecal coliform density shall not exceed 200/100 ml; and the E. coli density shall not exceed 126/100 ml, as a geometric mean. The bacteria objectives are found in Attachment A of Regional Board Resolution No. 2001-018.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region Basin Plan 1997-2009

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The data was collected from four stations: RA (above WRP), RC (Below WRP), RD (end of concrete-lined portion of San Jose Creek), C1 (above SJWRP 002), C2 (below SJWRP 002).

Temporal Representation:

The grab samples were taken and analyzed on a weekly and monthly basis from June 2004 to February 2007.

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

San Jose Creek Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0053911 (County Sanitation Districts of Los Angeles County)

Pomona Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0053619 (County Sanitation Districts of Los Angeles County)

Line of Evidence (LOE) for Decision ID 23738, Coliform Bacteria	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

LOE ID:

4147

Pollutant:

Coliform Bacteria

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Not Recorded

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

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)

SWAMP Data:

Non-SWAMP

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):

Line of Evidence (LOE) for Decision ID 23738, Coliform Bacteria	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

LOE ID:

26873

Pollutant:

Indicator Bacteria

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

Other Agencies/Organizations provided monitoring data

Data Used to Assess Water Quality:

Five of six samples exceeded the single-sample limit specified in the Basin Plan. A total of one out of one sample exceeded the geometric mean limit specified in the Basin Plan amendment. Samples were taken on a weekly and monthly basis in compliance with the Los Angeles County Sanitation Districts NPDES Permit (NPDES No. CA0053911 and CA0053619) Monitoring and Reporting Program.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region Basin Plan 1997-2009

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The Los Angeles County Department of Public Works conducted sampling at the mass emission monitoring station TS15 upstream of the confluence of Puente Creek.

Temporal Representation:

Grab samples were taken approximately six per year (four wet-weather events and two dry-weather events), from October 2003 through April 2007.

Environmental Conditions:

QAPP Information:

Data was collected in compliance with the sampling and monitoring procedures detailed in County of Los Angeles MS4 Permit (NPDES No. CAS004001) Monitoring and Reporting Program.

QAPP Information Reference(s):


DECISION ID	22261	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

Pollutant:	Total Dissolved Solids
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)(2010)
Revision Status	Original
Sources:	Source Unknown
Expected TMDL Completion Date:	2021
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. 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. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for 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. 35 of 149 samples exceeded the Basin Plan objective of 750 mg/L for TDS (water body specific: San Gabriel River watershed between Ramona Blvd. and Firestone Blvd.), and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. 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.

State Board Staff Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 22261, Total Dissolved Solids	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

LOE ID:

21153

Pollutant:

Total Dissolved Solids

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Aquatic Life Use:

Wildlife Habitat

Number of Samples:

149

Number of Exceedances:

Data and Information Type:

Fixed station physical/chemical (conventional plus toxic pollutants)

Data Used to Assess Water Quality:

35 of 149 samples exceeded the Basin Plan objective for pH. Samples were taken on a daily, weekly, and monthly basis in compliance with the Los Angeles County Sanitation Districts NPDES Permit (No. CA0053911 and CA0053619)Monitoring and Reporting Program.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Los Angeles RWQCB Basin Plan objective for TDS is 750 mg/L (water body specific: San Gabriel River watershed between Ramona Blvd. and Firestone Blvd.).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region Basin Plan 1997-2009

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The data was collected from four stations: RC (Below WRP), RD (end of concrete-lined portion of San Jose Creek), C1 (above SJWRP 002), C2 (below SJWRP 002).

Temporal Representation:

The grab samples were taken and analyzed on a daily, weekly, and monthly basis from June 2004 to February 2007.

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

San Jose Creek Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0053911 (County Sanitation Districts of Los Angeles County)

Pomona Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0053619 (County Sanitation Districts of Los Angeles County)


DECISION ID	19735	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

Pollutant:	Toxicity
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)(2010)
Revision Status	Original
Sources:	Source Unknown
Expected TMDL Completion Date:	2019
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. USEPA placed this water body-pollutant combination on the section 303(d) list using the data and information contained in the line of evidence.

Regional Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle.

State Board Staff Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 19735, Toxicity	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

LOE ID:

2570

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Water

Fraction:

None

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Available data show ambient toxicity (12 out of 60) in both wet and dry weather samples (USEPA, 2007).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Basin Plan: Surface waters shall not contain concentrations of chemical constituents in amounts that adversely affect any designated beneficial use.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Samples were considered toxic if (1) there was a significant difference in mean organism response between the sample and the control, and (2) the mean organism response in the test, as a percent of the control, was less than the threshold based on the 90th percentile minimum significant difference value.

Guideline Reference:

Placeholder reference 2006 303(d)

Spatial Representation:

Samples were collected throughout the water body.

Temporal Representation:

Environmental Conditions:

QAPP Information:

Data record: 2003-2006, SCCWRP, 2006

QAPP Information Reference(s):


DECISION ID	21017	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

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)(2010)
Revision Status	Original
Sources:	Source Unknown
Expected TMDL Completion Date:	2021
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. 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. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for 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. 101 of 292 samples exceeded the Basin Plan objective for pH and this exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are met.

Regional Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. 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.

State Board Staff Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 21017, pH	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

LOE ID:

21152

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Aquatic Life Use:

Wildlife Habitat

Number of Samples:

292

Number of Exceedances:

101

Data and Information Type:

Fixed station physical/chemical (conventional plus toxic pollutants)

Data Used to Assess Water Quality:

101 of 292 samples exceeded the Basin Plan objective for pH. Samples were taken on a daily, weekly, and monthly basis in compliance with the Los Angeles County Sanitation Districts NPDES Permit (No. CA0053911 and CA0053619) Monitoring and Reporting Program.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The Los Angeles RWQCB Basin Plan states that: The pH of inland surface waters shall not be depressed below 6.5 or raised above 8.5 as a result of waste discharges.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Basin Plan Amendments to the Water Quality Control Plan Los Angeles Region Basin Plan 1997-2009

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The data was collected from four stations: RC (Below WRP), RD (end of concrete-lined portion of San Jose Creek), C1 (above SJWRP 002), C2 (below SJWRP 002).

Temporal Representation:

Grab samples were taken and analyzed on a daily, weekly, and monthly basis from June 2004 to February 2007.

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

San Jose Creek Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0053911 (County Sanitation Districts of Los Angeles County)

Pomona Water Reclamation Plant Monitoring and Reporting Program for NPDES No. CA0053619 (County Sanitation Districts of Los Angeles County)


DECISION ID	20936	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

Pollutant:	Ammonia
Final Listing Decision:	List on 303(d) list (being addressed by action other than TMDL)
Last Listing Cycle's Final Listing Decision:	List on 303(d) list (being addressed by action other than TMDL)(2010)
Revision Status	Original
Sources:	Nonpoint Source \| Point Source
Expected Attainment Date:	2019
Date TMDL Approved by USEPA:	NPDES permit for the San Gabriel and Santa Clara River watersheds. An alternative enforceable program is in place that will address ammonia water quality standards exceedances for this Reach (SWRCB, 2003). In June 1995, the seven water reclamation plants discharging in the San Gabriel River and Santa Clara River watersheds received NPDES permits containing requirements regarding compliance with the Basin Plan water quality objectives for ammonia. In accordance with these permits, the Los Angeles County Sanitation Districts have been pursuing the addition of nitrification and denitrification facilities at each of these plants to comply with the ammonia objectives. By June 2003, it is expected that these new facilities will be operational and ammonia will be drastically reduced. Research facility operation shows that the monthly average ammonia concentration will fully comply with the chronic ammonia objective that is expected to be applicable in June 2003. It is probable that the majority of ammonia discharged to this water body was contributed by POTWs. Information in the record indicates that the majority (over 95%) of the ammonia in the Los Angeles River was contributed by POTWs. It is probable that the contribution in the San Gabriel River watershed is dominated by contributions from POTWs as well. Generally, concentrations of ammonia upstream of the treatment plants are much lower than downstream concentrations (up to an order of magnitude difference).
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. This pollutant is being considered for listing under section 2.2 of the Listing Policy. Under this section of the Policy, a minimum of one line of evidence is needed to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Two out of 17 samples exceed the ammonia objective, however, a remedial program other than a TMDL has been developed, approved, and is being implemented. This program is expected to result in attainment of the standard. This water segment-pollutant combination was moved off the section 303(d) list during the 2002 listing cycle. Based on the readily available information, the weight of evidence indicates that there is sufficient justification in favor of placing this water segment-pollutant combination in the Water Quality Limited Segments Being Addressed portion of 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. Two samples out of 17 total samples exceed the ammonia objective. However, a TMDL is in place to address this pollutant in this water body. 4. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

Regional Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle.

State Board Staff Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	Region 4 data was not included in the 2012 Integrated Report so all decisions are carried over from the 2010 listing cycle. After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board.

Line of Evidence (LOE) for Decision ID 20936, Ammonia	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

LOE ID:

2568

Pollutant:

Ammonia

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Based on 30-day average concentrations of ammonia, 2 samples out of 17 total samples exceed the ammonia objective. Ambient measurements of pH and temperature (30-day averages) were used to calculate the water quality objective (LACSD, 2004b).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

In order to protect aquatic life, ammonia concentrations in inland surface waters characteristic of freshwater shall not exceed the values calculated for the appropriate instream conditions [both pH and temperature] shown in Tables 3-1 to 3-3 [in the Basin Plan] (per U.S. EPA's most recent criteria guidance document, '1999 Update of Ambient Water Quality Criteria for Ammonia').

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Five stations.

Temporal Representation:

Data were collected between July 2003 and November 2004.

Environmental Conditions:

QAPP Information:

NPDES quality assurance.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 20936, Ammonia	Region 4
San Jose Creek Reach 1 (SG Confluence to Temple St.)

LOE ID:

2567

Pollutant:

Ammonia

LOE Subgroup:

Narrative Description Data

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Warm Freshwater Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

An alternative enforceable program is in place that will address ammonia water quality standards exceedances for this Reach (SWRCB, 2003).

In June 1995, the seven water reclamation plants discharging in the San Gabriel River and Santa Clara River watersheds received NPDES permits containing requirements regarding compliance with the Basin Plan water quality objectives for ammonia. In accordance with these permits, the Los Angeles County Sanitation Districts have been pursuing the addition of nitrification and denitrification facilities at each of these plants to comply with the ammonia objectives. By June 2003, it is expected that these new facilities will be operational and ammonia will be drastically reduced. Research facility operation shows that the monthly average ammonia concentration will fully comply with the chronic ammonia objective that is expected to be applicable in June 2003.

It is probable that the majority of ammonia discharged to this water body was contributed by POTWs. Information in the record indicates that the majority (over 95%) of the ammonia in the Los Angeles River was contributed by POTWs. It is probable that the contribution in the San Gabriel River watershed is dominated by contributions from POTWs as well. Generally, concentrations of ammonia upstream of the treatment plants are much lower than downstream concentrations (up to an order of magnitude difference).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Environmental Conditions:

QAPP Information:

QA Info Missing

QAPP Information Reference(s):