Draft California 2020 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 4 - Los Angeles Region

Water Body Name:	Los Cerritos Estuary
Water Body ID:	CAE4051200020110822102452
Water Body Type:	Estuary


DECISION ID	94621	Region 4
Los Cerritos Estuary

Pollutant:	Indicator Bacteria
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)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence are necessary to assess listing status. 3 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 insufficient justification for placing this water segment-pollutant combination on the CWA 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. 2 of 6, 2 of 6 and 2 of 6 samples exceeded the OBJECTIVE and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 26 samples is needed to determine if a beneficial use is fully supported using 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.

Regional Board Decision 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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	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 94621, Indicator Bacteria	Region 4
Los Cerritos Estuary

LOE ID:

86043

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

(VOL.) Chem./phys. monitoring data by quality-assured volunteer program

Data Used to Assess Water Quality:

Two of the six samples exceeded the enterococcus objective. The data was collected by volunteer monitoring groups during three years.

Data Reference:

Data for bacteria in various waterbodies, Feb. 2005-May 2007

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The single sample entercoccus concentration shall not exceed more than 104/100ml. California Ocean Plan 2006.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The data was collected from Cerritos Channel,Loynes bridge - estuary and Cerritos Channel - estuary.

Temporal Representation:

The data was collected in November 2003, February, May and July 2004, and May 2007.

Environmental Conditions:

QAPP Information:

The data was collected by volunteer monitoring groups undre the The Southern California Marine Institute Volunteer Monitoring Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 94621, Indicator Bacteria	Region 4
Los Cerritos Estuary

LOE ID:

86044

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

(VOL.) Chem./phys. monitoring data by quality-assured volunteer program

Data Used to Assess Water Quality:

Two of the six samples exceeded the E. coli objective. The data was collected by volunteer monitoring groups during three years.

Data Reference:

Data for bacteria in various waterbodies, Feb. 2005-May 2007

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The E. coli density shall not exceed 235/100 ml. (Water Quality Control Plan for the Los Angeles Region).

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002

Spatial Representation:

The data was collected from Cerritos Channel,Loynes bridge - estuary and Cerritos Channel - estuary.

Temporal Representation:

The data was collected in November 2003, February, May and July 2004, and May 2007.

Environmental Conditions:

QAPP Information:

The data was collected by volunteer monitoring groups undre the The Southern California Marine Institute Volunteer Monitoring Quality Assurance Project Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 94621, Indicator Bacteria	Region 4
Los Cerritos Estuary

LOE ID:

86047

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

(VOL.) Chem./phys. monitoring data by quality-assured volunteer program

Data Used to Assess Water Quality:

Two of the six samples exceeded the total coliform objective. The data was collected by volunteer monitoring groups during three years.

Data Reference:

Data for bacteria in various waterbodies, Feb. 2005-May 2007

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The single sample total coliform concentration shall not exceed more than 10,000/100ml. California Ocean Plan 2006.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The data was collected from Cerritos Channel,Loynes bridge - estuary and Cerritos Channel - estuary.

Temporal Representation:

The data was collected in November 2003, February, May and July 2004, and May 2007.

Environmental Conditions:

QAPP Information:

The data was collected by volunteer monitoring groups undre the The Southern California Marine Institute Volunteer Monitoring Quality Assurance Project Plan.

QAPP Information Reference(s):


DECISION ID	97052	Region 4
Los Cerritos Estuary

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)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence are necessary to assess listing status. 1 line of evidence is available in the administrative record to assess this pollutant. 1 of 1 sample exceeded the OBJECTIVE. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA 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. 1 of 1 sample exceeded the OBJECTIVE and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 26 samples is needed to determine if a beneficial use is fully supported using 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.

Regional Board Decision 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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	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 97052, Oxygen, Dissolved	Region 4
Los Cerritos Estuary

LOE ID:

86045

Pollutant:

Oxygen, Dissolved

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Marine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Numeric data generated from 1 sample of Dissolved Oxygen concentrations had 1 exceedences.

Data Reference:

Data for bacteria in various waterbodies, Feb. 2005-May 2007

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

For that area known as the Outer Harbor area of Los Angeles-Long Beach Harbors, the mean annual dissolved oxygen concentrations shall be 6.0 mg/L or greater, provided that no single determination shall be less than 5.0 mg/L.

Objective/Criterion Reference:

Water Quality Control Plan Los Angeles Region R4 Basin Plan

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from the Cerritos Channel station.

Temporal Representation:

One sample was collected in May 2007

Environmental Conditions:

QAPP Information:

NPDES quality assurance.

QAPP Information Reference(s):


DECISION ID	97051	Region 4
Los Cerritos Estuary

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)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence are necessary to assess listing status. 1 line of evidence is available in the administrative record to assess this pollutant. 0 of 1 sample exceeded the OBJECTIVE. Based on the readily available data and information, the weight of evidence indicates that there is insufficient justification for placing this water segment-pollutant combination on the CWA 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. 0 of 1 sample exceeded the OBJECTIVE and this sample size is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 26 samples is needed to determine if a beneficial use is fully supported using 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.

Regional Board Decision 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. The readily available data and information is insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating.

State Board Review of Regional Board Conclusion and Recommendation:

State Board Decision Recommendation:	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 97051, pH	Region 4
Los Cerritos Estuary

LOE ID:

86046

Pollutant:

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Dissolved

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Numeric data generated from 1 sample of pH data had no exceedences.

Data Reference:

Data for bacteria in various waterbodies, Feb. 2005-May 2007

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The pH of bays or estuaries 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

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from the Cerritos Channel station.

Temporal Representation:

One sample was collected on 5/5/2007.

Environmental Conditions:

QAPP Information:

NPDES quality assurance.

QAPP Information Reference(s):