Final California 2018 Integrated Report (303(d) List/305(b) Report)

Carlsbad Hydrologic Unit, SDRWQCB Investigative Order R9-2006-076, Lagoon Monitoring. Quality Assurance Plan. September 1, 2007

Spatial Representation:

The area of concern is 6.8 acres from the outer lagoon. There were four monitoring stations in the outer lagoon and two stations in the inner lagoon. Station Transect 1, Transect 2, Trasect 3, and Inlet 1 are in the outer lagoon and Inlet 2 and Segment 1 in the inner portion.

Temporal Representation:

The bacteria monitoring occurred from January 2008 through October 2008

Environmental Conditions:

The outer lagoon is dredged approximately every two years to support the operation of the Encina Power Station.

QAPP Information:

Water quality samples collected in accordance with the City of Encinitas quality assurance plan

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69839, Indicator Bacteria	Region 9
Agua Hedionda Lagoon

LOE ID:

30329

Pollutant:

Total Coliform

LOE Subgroup:

Pollution

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Beach monitoring data was collected from January 2008 through October 2008. A total of 93 single samples were collected with no samples exceeded the single sample water quality objective.

Data Reference:

Bacteria Monitoring Data for Agua Hedionda Lagoon. July 22, 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Single Sample Maximum: Total coliform density shall not exceed 10,000 per 100ml.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 14, 2006

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Carlsbad Hydrologic Unit, SDRWQCB Investigative Order R9-2006-076, Lagoon Monitoring. Quality Assurance Plan. September 1, 2007

Spatial Representation:

Temporal Representation:

The bacteria monitoring occurred from January 2008 through October 2008

Environmental Conditions:

The outer lagoon is dredged approximately every two years to support the operation of the Encina Power Station.

QAPP Information:

Water quality samples collected in accordance with the City of Encinitas quality assurance plan

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69839, Indicator Bacteria	Region 9
Agua Hedionda Lagoon

LOE ID:

72912

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:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed County of San Diego data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Coliform, Total.

Data Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

In waters designated for water contact recreation (REC I), the total coliform concentration shall not exceed 10000 MPN/100 ml (California Ocean Plan 2009).

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ Agua Hedionda Lagoon, Agua Hedionda Lagoon, Agua Hedionda Lagoon, Agua Hedionda Lagoon, Agua Hedionda Lagoon]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 69839, Indicator Bacteria	Region 9
Agua Hedionda Lagoon

LOE ID:

30330

Pollutant:

Total Coliform

LOE Subgroup:

Pollution

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Beach monitoring data was collected from January 2008 through October 2008. A total 27 geomeans were calculated with three exceeding the objective.

Data Reference:

Bacteria Monitoring Data for Agua Hedionda Lagoon. July 22, 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Geomean: Total coliform density shall not exceed 1,000 per 100ml.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 14, 2006

Evaluation Guideline:

Guideline Reference:

Carlsbad Hydrologic Unit, SDRWQCB Investigative Order R9-2006-076, Lagoon Monitoring. Quality Assurance Plan. September 1, 2007

Spatial Representation:

Temporal Representation:

The bacteria monitoring occurred from January 2008 through October 2008

Environmental Conditions:

The outer lagoon is dredged approximately every two years to support the operation of the Encina Power Station.

QAPP Information:

Water quality samples collected in accordance with the City of Encinitas quality assurance plan

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69839, Indicator Bacteria	Region 9
Agua Hedionda Lagoon

LOE ID:

30334

Pollutant:

Enterococcus

LOE Subgroup:

Pollution

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Beach monitoring data was collected from January 2008 through October 2008. A total of 27 geomeans were calculated with three exceeding the objective.

Data Reference:

Bacteria Monitoring Data for Agua Hedionda Lagoon. July 22, 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Geomean: Enterococcus density shall not exceed 35 per 100 ml.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 14, 2006

Evaluation Guideline:

Guideline Reference:

Carlsbad Hydrologic Unit, SDRWQCB Investigative Order R9-2006-076, Lagoon Monitoring. Quality Assurance Plan. September 1, 2007

Spatial Representation:

Temporal Representation:

The bacteria monitoring occurred from January 2008 through October 2008

Environmental Conditions:

The outer lagoon is dredged approximately every two years to support the operation of the Encina Power Station.

QAPP Information:

Water quality samples collected in accordance with the City of Encinitas quality assurance plan

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69839, Indicator Bacteria	Region 9
Agua Hedionda Lagoon

LOE ID:

30333

Pollutant:

Enterococcus

LOE Subgroup:

Pollution

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Beach monitoring data was collected from January 2008 through October 2008. A total of 93 single samples were collected with nine samples exceeding the single sample objective.

Data Reference:

Bacteria Monitoring Data for Agua Hedionda Lagoon. July 22, 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Single Sample Maximum: Enterococcus density shall not exceed 104 per 100 ml.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 14, 2006

Evaluation Guideline:

Guideline Reference:

Carlsbad Hydrologic Unit, SDRWQCB Investigative Order R9-2006-076, Lagoon Monitoring. Quality Assurance Plan. September 1, 2007

Spatial Representation:

Temporal Representation:

The bacteria monitoring occurred from January 2008 through October 2008

Environmental Conditions:

The outer lagoon is dredged approximately every two years to support the operation of the Encina Power Station.

QAPP Information:

Water quality samples collected in accordance with the City of Encinitas quality assurance plan

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69839, Indicator Bacteria	Region 9
Agua Hedionda Lagoon

LOE ID:

72901

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:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed County of San Diego data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Enterococci.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Samples shall not exceed 104 organisms per 100 ml for enterococcus in waters designated for REC I beneficial use (Water Quality Control Plan for the San Diego Basin).

Objective/Criterion Reference:

Quality Assurance Project Plan from Southern California Bight.

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69839, Indicator Bacteria	Region 9
Agua Hedionda Lagoon

LOE ID:

72902

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Non-Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed County of San Diego data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Coliform, Fecal.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

In waters designated for non contact recreation (REC 2), the fecal coliform concentration shall not exceed 4000 MPN/100 ml (Basin Plan).

Objective/Criterion Reference:

Quality Assurance Project Plan from Southern California Bight.

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69839, Indicator Bacteria	Region 9
Agua Hedionda Lagoon

LOE ID:

30331

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollution

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Beach monitoring data was collected by the from January 2008 through October 2008. A total 93 samples were collected with five exceeding the single sample objective.

Data Reference:

Bacteria Monitoring Data for Agua Hedionda Lagoon. July 22, 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Single Sample Maximum: Fecal coliform density shall not exceed 400 per 100 ml.

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 14, 2006

Evaluation Guideline:

Guideline Reference:

Carlsbad Hydrologic Unit, SDRWQCB Investigative Order R9-2006-076, Lagoon Monitoring. Quality Assurance Plan. September 1, 2007

Spatial Representation:

Temporal Representation:

The bacteria monitoring occurred from January 2008 through October 2008

Environmental Conditions:

The outer lagoon is dredged approximately every two years to support the operation of the Encina Power Station.

QAPP Information:

Water quality samples collected in accordance with the City of Encinitas quality assurance plan

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69839, Indicator Bacteria	Region 9
Agua Hedionda Lagoon

LOE ID:

72903

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed County of San Diego data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Coliform, Fecal.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

In waters designated for water contact recreation (REC I), the fecal coliform concentration shall not exceed 400 MPN/100 ml.

Objective/Criterion Reference:

Quality Assurance Project Plan from Southern California Bight.

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69839, Indicator Bacteria	Region 9
Agua Hedionda Lagoon

LOE ID:

4438

Pollutant:

Indicator 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:

PATHOGEN MONITORING

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 69839, Indicator Bacteria	Region 9
Agua Hedionda Lagoon

LOE ID:

72911

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed County of San Diego data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Coliform, Total.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

In waters where shellfish harvesting for human consumption, commercial or sports purposes is designated the total coliform concetration shall not exceed 230 per 100 ml (Basin Plan).

Objective/Criterion Reference:

Quality Assurance Project Plan from Southern California Bight.

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 69839, Indicator Bacteria	Region 9
Agua Hedionda Lagoon

LOE ID:

30327

Pollutant:

Total Coliform

LOE Subgroup:

Pollution

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

PWS pathogen monitoring (ambient water)

Data Used to Assess Water Quality:

Beach monitoring data was collected from January 2008 through October 2008. A total of 93 single samples were collected with 10 samples exceeded the single sample water quality objective.

Data Reference:

Bacteria Monitoring Data for Agua Hedionda Lagoon. July 22, 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

From the Ocean Plan the median coliform density shall not exceed 70 per 100ml, and not more than 10 percent of the samples shall exceed 230 per 100ml (SWRCB, 2005).

Objective/Criterion Reference:

SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 14, 2006

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Carlsbad Hydrologic Unit, SDRWQCB Investigative Order R9-2006-076, Lagoon Monitoring. Quality Assurance Plan. September 1, 2007

Spatial Representation:

Temporal Representation:

The bacteria monitoring occurred from January 2008 through October 2008

Environmental Conditions:

The outer lagoon is dredged approximately every two years to support the operation of the Encina Power Station.

QAPP Information:

Water quality samples collected in accordance with the City of Encinitas quality assurance plan

QAPP Information Reference(s):


DECISION ID	76843	Region 9
Agua Hedionda Lagoon

Pollutant:	Sedimentation/Siltation
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)(2016)
Revision Status	Original
Reason for Delisting:	Flaws in original listing
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	The decision has not changed from the previous listing cycle. No new data were assessed for the current listing cycle. Therefore, the previous conclusion remains unchanged, and is as follows: This pollutant is being considered for removal from the section 303(d) list under section 4.2 of the Listing Policy. Based on the readily available 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.No data could be found to confirm sedimentation is causing impairment. The delisting the Agua Hedionda Lagoon, for impairment by sedimentation/siltation, is warranted based upon the following observations: 1) The lagoon is an engineered system that is artificially kept open and includes settling basins that are expected to require maintenance to remove sediment, 2) There is a significant lack of data to support the original sedimentation listing on the 1992 WQA, 3) The historical listings of the lagoon (1992 to 2006) apparently were limited to the outer lagoon, 4) The curtailed sandbar formation in the middle and inner lagoon since the 1998 dredging work in the outer, middle, and inner lagoon, 5) The outer lagoon continues to be dredged every 1 to 3 years, and 6) The apparent effective reduction in sediment build up in the inner lagoon settling basin.

Regional Board Decision Recommendation:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed.

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 76843, Sedimentation/Siltation	Region 9
Agua Hedionda Lagoon

LOE ID:

30326

Pollutant:

Sedimentation/Siltation

LOE Subgroup:

Testimonial Evidence

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Marine Habitat

Aquatic Life Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Visual observation, may not quantify some parameters; single season; by prof.

Data Used to Assess Water Quality:

Agua Hedionda Lagoon is a lagoon that has been extensively modified/improved to create a man-made lagoon to support the operation of the Encina Power Station. Under natural conditions, the lagoon was originally a ¿silt-choked¿ marsh that was only occasionally open to the ocean. The lagoon system configuration that was originally dredged in 1954 included two settling basins ¿ one in the outer lagoon (~20 feet below MSL) to trap sands carried in through the ocean inlet, and one at the eastern end of the inner lagoon (~17 feet below MSL) to trap sediments from Agua Hedionda Creek, which discharges in to the lagoon. As of 2009, the lagoon system is essentially an engineered system that was built in 1954 and was expected to require some maintenance to remove sediment from the settling basins.

The documentation to support the original basis for listing Agua Hedionda Lagoon as an impaired water quality segment, on the 1992 WQA, could not be found. The 1992 WQA listing of Agua Hedionda Lagoon is based primarily on the elevated levels of bacteria in shellfish muscle tissue rather than upon bacteria or sediment in the water column. This seems to be consistent with the 1992 WQA listing being limited to 1 of 400 acres, presumably associated with the shellfish growing area in the outer lagoon.

The 1996 WQA increased the area affected to 5 acres, which still is limited to the shellfish growing area in the outer lagoon. In the 1998 303(d) List, the area affected is still shown as 5 acres. The 2002 and 2006 303(d) Lists show the area affected as 6.8 acres. In every listing, the area affected appears to be limited to the outer lagoon.

In regards to the basis for listing Agua Hedionda Lagoon for sedimentation, data is not available to support the listing. The available information suggests that the original listing was likely based on the observation of sandbars that had formed in the outer, middle, and western part of the inner lagoon. The sandbars were first noticed in 1960, just 6 years after the intial dredging that formed the lagoon. The formation of the sandbars in the middle and inner lagoon appeared to be a result of the higher than expected flow rates required to operate the Encina Power Station, which greatly increased the sediment discharge into the lagoon from the ocean inlet during flood tides, and reduced the effectiveness of sediment removal out of the lagoon during the ebb tides.

In 1998, the outer, middle, and inner Agua Hedionda Lagoon was dredged to conform to a remedial measure proposed by Jenkins and Wasyl (1996). Since the 1998 dredging, the formation of sandbars in the middle and inner lagoon do not appear to be re-occurring. The outer lagoon continues to be dredged approximately every 2 years. The overall impacts of the past dredging projects seems to have improved water circulation and reduced the sediment deposition in the settling basin in the eastern part of the inner lagoon as compared to the time period from 1954 to 1998. The Encina Power Station continues to monitor the sediment build up in the outer, middle, and inner lagoon.

Data Reference:

Proposal to Remove/Delist Agua Hedionda Lagoon from the Clean Water Act Section 303(d) List of Water Quality Limited Segments for Sedimentation. Memorandum from Wayne Chiu to Alan Monji. July 28, 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The suspended sediment load and suspended sediment discharge rate of surface waters shall not be altered in such a manner as to cause nuisance or adversely affect beneficial uses.

Objective/Criterion Reference:

Evaluation Guideline:

Evidence of siltation.

Guideline Reference:

Spatial Representation:

The area of concern is 6.8 acres from the outer lagoon.

Temporal Representation:

The narrative covers a period from 1992 to present

Environmental Conditions:

The outer lagoon is dredged approximately every two years to support the operation of the Encina Power Station.

QAPP Information:

None necessary

QAPP Information Reference(s):


DECISION ID	81161	Region 9
Agua Hedionda Lagoon

Pollutant:	2-Methylnaphthalene
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 3.6 of the Listing Policy. Under section 3.6, two lines of evidence are necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the evaluation guideline. 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 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. Zero of 5 samples exceeded the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 4. Pursuant to 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 81161, 2-Methylnaphthalene	Region 9
Agua Hedionda Lagoon

LOE ID:

78195

Pollutant:

2-Methylnaphthalene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for 2-Methylnaphthalene.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan for the San Diego Basin (SDRWQCB 2007): All waters shall be maintained free of toxic substances in concentrations which are toxic to, or which produce detrimental physiological responses in, human, plant, animal, or aquatic life.

Objective/Criterion Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for 2-Methylnaphthalene is 201.28 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 81161, 2-Methylnaphthalene	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Five samples were collected to test for toxicity. One of the samples exhibited statistically significant toxicity. The toxicity tests included survival of Eohaustorius estuarius and percent normal of Mytilus galloprovincialis.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Toxicity is defined as a statistically significant effect in the sample exposure compared to the control using EPA-recommended hypothesis testing. The t-test is used to determine if there is a statistically significant decrease in organism response in the sample as compared to the control.

Guideline Reference:

Guideline Reference:

Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fourth Edition. U.S. Environmental Protection Agency Office of Water, Washington, DC EPA-821-R-02-013

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

Data for Various Pollutants in the Agua Hedionda Lagoon and Navy Storm Water, 2001-2008.


DECISION ID	81162	Region 9
Agua Hedionda Lagoon

Pollutant:	Ammonia (Unionized)
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 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. One of 86 samples exceed the water quality objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the CWA section 303(d) List in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. One of 86 samples exceed the water quality objective and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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 because applicable water quality standards are not being exceeded.

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 81162, Ammonia (Unionized)	Region 9
Agua Hedionda Lagoon

LOE ID:

72884

Pollutant:

Ammonia (Unionized)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

One of the samples exceeded 0.025 mg/l un-ionized ammonia (NH3) in coastal lagoon.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The discharge of wastes shall not cause concentrations of un-ionized ammonia (NH3) to exceed 0.025 mg/l (as N) in inland surface waters, enclosed bays and estuaries and coastal lagoons.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Sample was collected at Agua Hedionda Lagoon.

Temporal Representation:

Samples were collected from 11/2001 to 12/2008.

Environmental Conditions:

QAPP Information:

No quality assurance information was provided.

QAPP Information Reference(s):


DECISION ID	81214	Region 9
Agua Hedionda Lagoon

Pollutant:	Antimony
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(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 3.6 of the Listing Policy. Under section 3.6, two lines of evidence are necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the evaluation guideline. 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 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. Zero of 5 samples exceed the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81214, Antimony	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81214, Antimony	Region 9
Agua Hedionda Lagoon

LOE ID:

78196

Pollutant:

Antimony

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Antimony.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Antimony is 25 ug/g dry weight (Long and Morgan, 1990).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.


DECISION ID	85571	Region 9
Agua Hedionda Lagoon

Pollutant:	Arsenic
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(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 sections 3.1, 3.5, and 3.6 of the Listing Policy. Under section 3.6 two lines of evidence are necessary to assess listing status, and a single line of evidence is necessary to assess listing status under section 3.5. Three lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the evaluation guideline in sediment and 1 of 1 sample exceeds the evaluation guideline in tissue. 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 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. Zero of 5 samples exceeded the evaluation guideline in sediment and 0 of 1 sample exceeds the evaluation guideline in tissue and these sample size are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples are needed to determine if a beneficial use is fully supported using table 3.1. 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 85571, Arsenic	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 85571, Arsenic	Region 9
Agua Hedionda Lagoon

LOE ID:

78197

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Arsenic.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Arsenic is 70 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 85571, Arsenic	Region 9
Agua Hedionda Lagoon

LOE ID:

72885

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The one sample did exceed the guideline. Data were reported on a dry weight basis and were converted to a wet weight basis by multiplying the dry-weight concentration by a factor of 1 minus the percentage of moisture content expressed as a decimal. Ten percent of the total arsenic result was used to estimate of the amount of inorganic arsenic in the sample; this number was screened against the guideline.

Data Reference:

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan for the San Diego Region: 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.

Objective/Criterion Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for arsenic in shellfish tissue is 0.0052 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; OEHHA, 2004)

Guideline Reference:

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Air Toxics Hotspots Program Risk Assessment Guidelines. Part ll Technical Support Document for Describing Available Cancer Potency Values.

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

Samples were collected as part of the State Water Board's Mussel Watch Program which is a part of the National Oceanic Administration's (NOAAs) National Status and Trends (NS&T). Mussels are shipped to NOAAs contract labs for analysis of trace constituents and mussel condition. Analytical protocols follow those approved by NOAAs NS&T Program Additional background information can be found at:
http://ccma.nos.noaa.gov/stressors/pollution/nsandt/

QAPP Information Reference(s):


DECISION ID	81317	Region 9
Agua Hedionda Lagoon

Pollutant:	Benzo(a)anthracene
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 3.6 of the Listing Policy. Under section 3.6 two line(s) of evidence are necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the evaluation guideline. 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 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. Zero of 5 samples exceeded the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81317, Benzo(a)anthracene	Region 9
Agua Hedionda Lagoon

LOE ID:

78201

Pollutant:

Benzo(a)anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Benzo(a)anthracene.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Benzo(a)anthracene is 692.53 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 81317, Benzo(a)anthracene	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board


DECISION ID	81319	Region 9
Agua Hedionda Lagoon

Pollutant:	Cadmium
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(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 sections 3.5 and 3.6 of the Listing Policy. Under section 3.6 two lines of evidence are necessary to assess listing status. Three lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the evaluation guideline for sediment and 0 of 1 sample exceeds the evaluation guideline for tissue. 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 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. Zero of 5 samples exceed the evaluation guideline for sediment and 0 of 1 sample exceeds the evaluation guideline for tissue and these sample sizes are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81319, Cadmium	Region 9
Agua Hedionda Lagoon

LOE ID:

72888

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The sample did not exceed the guideline. Data were reported on a dry weight basis and were converted to a wet weight basis by multiplying the dry-weight concentration by a factor of 1 minus the percentage of moisture content expressed as a decimal.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for cadmium in shellfish tissue is 3.3 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81319, Cadmium	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81319, Cadmium	Region 9
Agua Hedionda Lagoon

LOE ID:

78202

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Cadmium.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Cadmium is 4.21 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.


DECISION ID	81374	Region 9
Agua Hedionda Lagoon

Pollutant:	Chlordane
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 sections 3.1, 3.5, and 3.6 of the Listing Policy. Under section 3.6 two lines of evidence are necessary to assess listing status, and a single line of evidence is necessary to assess listing status under section 3.5. Three lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the evaluation guideline in sediment and 1 of 1 sample exceeds the evaluation guideline in tissue. 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 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. Zero of 5 samples exceeded the evaluation guideline in sediment and 0 of 1 sample exceeds the evaluation guideline in tissue and these sample size are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples are needed to determine if a beneficial use is fully supported using table 3.1. 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 81374, Chlordane	Region 9
Agua Hedionda Lagoon

LOE ID:

72886

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

Data Reference:

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Water Quality Control Plan for the San Diego Region: No individual pesticide or combination of pesticides shall be present in the water column, sediments or biota at concentration(s) that adversely affect beneficial uses. Pesticides shall not be present at levels which will bioaccumulate in aquatic organisms to levels which are harmful to human health, wildlife or aquatic organisms.

Objective/Criterion Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for total chlordane in shellfish tissue is 6.0 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008)

Guideline Reference:

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81374, Chlordane	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81374, Chlordane	Region 9
Agua Hedionda Lagoon

LOE ID:

78198

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Chlordane, Total.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

The potential for biological effects of sediment-sorbed contaminants tested in the National Status of Trends Program. NOAA Technical Memorandum NOS OMA 52. Seattle, WA: National Oceanic and Atmospheric Administration

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Total Chlordane is 6 ng/g dry weight (Long and Morgan, 1990).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.


DECISION ID	81526	Region 9
Agua Hedionda Lagoon

Pollutant:	Chlorpyrifos
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 3.5 of the Listing Policy. Under section 3.5 a single line(s) of evidence are necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. Zero of 1 sample exceeds the evaluation guideline. 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 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. Zero of 1 sample exceeds the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81526, Chlorpyrifos	Region 9
Agua Hedionda Lagoon

LOE ID:

72887

Pollutant:

Chlorpyrifos

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

Data Reference:

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for chlorpyrifos in shellfish tissue is 1,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):


DECISION ID	81527	Region 9
Agua Hedionda Lagoon

Pollutant:	Chromium
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 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the 5 samples exceed the evaluation guideline. 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 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. Zero of 5 samples exceed the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81527, Chromium	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81527, Chromium	Region 9
Agua Hedionda Lagoon

LOE ID:

78199

Pollutant:

Chromium

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Chromium.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Chromium is 370 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.


DECISION ID	81528	Region 9
Agua Hedionda Lagoon

Pollutant:	Chrysene (C1-C4)
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 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the evaluation guideline. Based on the readily available data and information, the weight of evidence indicates that there issufficient justification against 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. Zero of 5 samples exceed the evaluation guideline and this sample size isinsufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81528, Chrysene (C1-C4)	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81528, Chrysene (C1-C4)	Region 9
Agua Hedionda Lagoon

LOE ID:

78200

Pollutant:

Chrysene (C1-C4)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Chrysene.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Chrysene is 845.98 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.


DECISION ID	81529	Region 9
Agua Hedionda Lagoon

Pollutant:	Copper
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(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 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the evaluation guideline. 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 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. Zero of 5 samples exceed the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81529, Copper	Region 9
Agua Hedionda Lagoon

LOE ID:

78206

Pollutant:

Copper

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Copper.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Copper is 270 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 81529, Copper	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):


DECISION ID	81576	Region 9
Agua Hedionda Lagoon

Pollutant:	Dibenz[a,h]anthracene
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 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the evaluation guideline. 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 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. Zero of 5 samples exceed the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81576, Dibenz[a,h]anthracene	Region 9
Agua Hedionda Lagoon

LOE ID:

78207

Pollutant:

Dibenz[a,h]anthracene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Dibenzo(a, h)anthracene.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Dibenzo(a, h)anthracene is 260 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 81576, Dibenz[a,h]anthracene	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board


DECISION ID	81577	Region 9
Agua Hedionda Lagoon

Pollutant:	Dieldrin
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 3.5 of the Listing Policy. Under section 3.5 a single line(s) of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. Zero of 1 sample exceeds the evaluation guideline. 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 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. Zero of 1 sample exceeds the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81577, Dieldrin	Region 9
Agua Hedionda Lagoon

LOE ID:

72898

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The results did not exceed the guideline. Data were reported on a dry weight basis and were converted to a wet weight basis by multiplying the dry-weight concentration by a factor of 1 minus the percentage of moisture content expressed as a decimal.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for dieldrin in shellfish tissue is 0.49 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008)

Guideline Reference:

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):


DECISION ID	81578	Region 9
Agua Hedionda Lagoon

Pollutant:	Endosulfan
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 3.5 of the Listing Policy. Under section 3.5 a single line(s) of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. Zero of 1 sample exceeds the evaluation guideline. 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 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. Zero of 1 sample exceeds the evaluation guideline 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 16 samples are needed to determine if a beneficial use is fully supported using table 3.1. 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 81578, Endosulfan	Region 9
Agua Hedionda Lagoon

LOE ID:

72899

Pollutant:

Endosulfan

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

Data Reference:

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for endosulfan (l and ll) in shellfish tissue is 20,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):


DECISION ID	81630	Region 9
Agua Hedionda Lagoon

Pollutant:	Endrin
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 3.5 and 3.6 of the Listing Policy. Under section 3.5, a single line of evidence is necessary to determine listing status and under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Three lines of evidence are available in the administrative record to assess this pollutant. Zero of the 5 samples exceed the evaluation guideline in sediment, and 0 of 1 sample exceed the evaluation guideline in tissue. 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. Zero of the 5 samples exceed the evaluation guideline in sediment, and 0 of 1 sample exceed the evaluation guideline in tissue and these sample sizes are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81630, Endrin	Region 9
Agua Hedionda Lagoon

LOE ID:

78208

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Endrin.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Technical basis for deriving sediment criteria for nonionic organic contaminants for the protection of benthic organisms by using equilibrium partitioning. EPA822-R-93-011. Washington, D.C.: Office of Water, USEPA

Evaluation Guideline:

In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Endrin is 0.76 ug/g oc (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 81630, Endrin	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board

Line of Evidence (LOE) for Decision ID 81630, Endrin	Region 9
Agua Hedionda Lagoon

LOE ID:

72900

Pollutant:

Endrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for endrin in shellfish tissue is 1,000 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):


DECISION ID	81631	Region 9
Agua Hedionda Lagoon

Pollutant:	Heptachlor epoxide
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 3.5 of the Listing Policy. Under section 3.5 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. Zero of 1 sample exceeds the evaluation guideline. 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 CWA 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. Zero of 1 sample exceeds the evaluation guideline 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 16 samples are needed to determine if a beneficial use is fully supported using table 3.1. 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 81631, Heptachlor epoxide	Region 9
Agua Hedionda Lagoon

LOE ID:

72904

Pollutant:

Heptachlor epoxide

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

Data Reference:

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for heptachlor epoxide in shellfish tissue is 1.4 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; OEHHA, 1999)

Guideline Reference:

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Public Health Goal for Heptachlor and Heptachlor Epoxide in Drinking Water

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):


DECISION ID	81683	Region 9
Agua Hedionda Lagoon

Pollutant:	Hexachlorobenzene/ HCB
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 3.5 of the Listing Policy. Under section 3.5 a single line(s) of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. Zero of 1 sample exceed the evaluation guideline. 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 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. Zero of 1 sample exceed the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81683, Hexachlorobenzene/ HCB	Region 9
Agua Hedionda Lagoon

LOE ID:

72905

Pollutant:

Hexachlorobenzene/ HCB

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The result did not exceed the guideline. Data were reported on a dry weight basis and were converted to a wet weight basis by multiplying the dry-weight concentration by a factor of 1 minus the percentage of moisture content expressed as a decimal.

Data Reference:

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for hexachlorobenzene in shellfish tissue is 4.3 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Air Toxics Hotspots Program Risk Assessment Guidelines. Part ll Technical Support Document for Describing Available Cancer Potency Values.

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):


DECISION ID	68949	Region 9
Agua Hedionda Lagoon

Pollutant:	Invasive Species
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:	Pollution

Regional Board Conclusion:	The decision has not changed from the previous listing cycle. No new data were assessed for the current listing cycle. Therefore, the previous conclusion remains unchanged, and is as follows: This pollutant is being considered for placement on the section 303(d) list under section 3.10 of the Listing Policy. Under section 3.10 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. Caulerpa taxifolia was first discovered at Agua Hedionda Lagoon on 6-12-00. Third year monitoring results, to summer 2003 detected no presence of C. taxifolia. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1) Third year monitoring of C. taxifolia occurred from fall 2002 to summer 2003. 2) Baseline data was established from the first and second year monitoring results. 3) Third year monitoring for winter 2002 and spring 2003 were not conducted lagoon-wide, but focused on areas previously known to support C. taxifolia. 4) During the Fall 2002, Winter 2002, Spring 2003 and Summer 2003 surveys no Caulerpa taxifolia was found in the Agua Hedionda Lagoon. None has been discovered since 9/11/02, during the summer survey for the second year monitoring. 5) It cannot be determined if the trend in water quality is expected to meet water standards by the next listing cycle. 6) 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:	This is a decision previously approved by the State Water Resources Control Board and the USEPA. No new data were assessed by the Regional Board for the current cycle. The decision has not changed.

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 68949, Invasive Species	Region 9
Agua Hedionda Lagoon

LOE ID:

641

Pollutant:

Invasive Species

LOE Subgroup:

Population/Community Degradation

Matrix:

Water

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Caulerpa taxifolia was found in Aqua Hedionda Lagoon on 6-12-00. A second infestation was also located at Huntington Harbor, Orange County, CA. It is possible that Caulerpa taxifolia has been in the Lagoon for at least four years (as early as 1996) prior to its first discovery there. During the Fall 2002, Winter 2002, Spring 2003 and Summer 2003 surveys no Caulerpa taxifolia was found in the Agua Hedionda Lagoon. (Anderson, 2005).

Data Reference:

Placeholder reference 2006 303(d)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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.

Objective/Criterion Reference:

Placeholder reference 2006 303(d)

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Third year monitoring of Caulerpa taxifolia at Aqua Hedionda Lagoon, Carlsbad, California. The amount of Caulerpa taxifolia in June 2000 was approximately 1,047 meters squared, but by the end of the second year of eradication the amount had been reduced to 0.4 meters squared. Surveys were conducted lagoon-wide, covering the west, central and east basin, however the spring 2003 and winter 2002 surveys were limited to high-risk areas previously known to support Caulerpa taxifolia.

Temporal Representation:

During the third year of eradication, survey work involved four surveys conducted quarterly from fall 2002 to the end of summer 2003. No Caulerpa taxifolia was located in the Lagoon during these surveys for the third year monitoring.

Environmental Conditions:

Changes in relative diversity and abundance of native species may also be driven by habitat alteration, flow changes, or hydromodification.

QAPP Information:

Peer Reviewed Journal Article.

QAPP Information Reference(s):


DECISION ID	81684	Region 9
Agua Hedionda Lagoon

Pollutant:	Lead
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 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the evaluation guideline. 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 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. Zero of 5 samples exceed the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81684, Lead	Region 9
Agua Hedionda Lagoon

LOE ID:

78209

Pollutant:

Lead

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Lead.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Lead is 112.18 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 81684, Lead	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):


DECISION ID	81733	Region 9
Agua Hedionda Lagoon

Pollutant:	Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
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 3.5 and 3.6 of the Listing Policy. Under section 3.5, a single line of evidence is necessary to determine listing status and under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Three lines of evidence are available in the administrative record to assess this pollutant. Zero of the 5 samples exceed the evaluation guideline in sediment, 1 of 5 samples exceed the water quality objective for toxicity in sediment, and 0 of 1 sample exceed the evaluation guideline in tissue. 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. Zero of the 5 samples exceed the evaluation guideline in sediment, and 0 of 1 sample exceed the evaluation guideline in tissue and these sample sizes are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81733, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81733, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 9
Agua Hedionda Lagoon

LOE ID:

78210

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for HCH, Gamma.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

An evaluation of methods for calculating mean sediment quality guideline quotients as indicators of contamination and acute toxicity to amphipods by chemical mixtures. Environmental Toxicology and Chemistry. 20(10): 2276-2286

Evaluation Guideline:

In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for HCH, gamma(Lindane; BHC, gamma) is 0.37 ug/g oc (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 81733, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 9
Agua Hedionda Lagoon

LOE ID:

72906

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

Data Reference:

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for lindane in shellfish tissue is 7.1 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; OEHHA, 2005)

Guideline Reference:

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Air Toxics Hotspots Program Risk Assessment Guidelines. Part ll Technical Support Document for Describing Available Cancer Potency Values.

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):


DECISION ID	81734	Region 9
Agua Hedionda Lagoon

Pollutant:	Mercury
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(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 3.5 and 3.6 of the Listing Policy. Under section 3.5, a single line of evidence is necessary to determine listing status and under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Three lines of evidence are available in the administrative record to assess this pollutant. Zero of the 5 samples exceed the evaluation guideline in sediment, 1 of 5 samples exceed the water quality objective for toxicity in sediment, and 0 of 1 sample exceed the evaluation guideline in tissue. 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. Zero of the 5 samples exceed the evaluation guideline in sediment, and 0 of 1 sample exceed the evaluation guideline in tissue and these sample sizes are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81734, Mercury	Region 9
Agua Hedionda Lagoon

LOE ID:

72907

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

Data Reference:

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

The USEPA 304(a) recommended water quality criterion for concentrations of methylmercury in shellfish tissue (wet weight) is 0.2 ppm. (Brodberg, R.K., and G.A. Pollock, 1999; USEPA, 2001)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Water Quality Criterion for the Protection of Human Health: Methylmercury. Final. United States Environmental Protection Agency Office of Science and Technology Office of Water. EPA-823-R-01-001. January 2001

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81734, Mercury	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81734, Mercury	Region 9
Agua Hedionda Lagoon

LOE ID:

78211

Pollutant:

Mercury

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Mercury.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Pollutants of concern in Puget Sound. EPA 910/9-91-003. Seattle, WA: U.S. Environmental Protection Agency

Evaluation Guideline:

In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Mercury is 2.1 ug/g (PTI Environmental Services, 1991).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.


DECISION ID	81841	Region 9
Agua Hedionda Lagoon

Pollutant:	Mirex
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 3.5 of the Listing Policy. Under section 3.5 a single line(s) of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. Zero of 0 samples exceed the evaluation guideline. 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 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. Zero of 0 samples exceed the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81841, Mirex	Region 9
Agua Hedionda Lagoon

LOE ID:

72908

Pollutant:

Mirex

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The detected not quantifiable result was not included in the assessment since the reporting limit was above the evaluation guideline. MDL were provided by NOAA Federal and RL were calculated by multiplying 3.18 by the MDL.

Data Reference:

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for mirex in shellfish tissue is 0.43 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; OEHHA, 1992)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Expedited Cancer Potency Values and Proposed Regulatory Levels for Certain Proposition 65 Carcinogens.

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):


DECISION ID	81952	Region 9
Agua Hedionda Lagoon

Pollutant:	PAHs (Polycyclic Aromatic Hydrocarbons)
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 sections 3.5 and 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Under section 3.5, at least one single line of evidence is necessary to determine listing status. Five lines of evidence are available in the administrative record to assess this pollutant. Zero of the 5 samples exceed the evaluation guideline in sediment for low molecular PAHs, 0 of 5 samples exceed the evaluation guideline for high molecular weight PAHs, 0 of 5 samples exceed the evaluation guideline for Total PAHs, 0 of 1 sample exceeds the evaluation guideline for PAHs in tissue. One of 5 samples exhibited sediment toxicity. 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 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. Zero of the 5 samples exceed the evaluation guideline in sediment for low molecular PAHs, 0 of 5 samples exceed the evaluation guideline for high molecular weight PAHs, 0 of 5 samples exceed the evaluation guideline for Total PAHs, 0 of 1 sample exceeds the evaluation guideline for PAHs in tissue and these sample sizes are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81952, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81952, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 9
Agua Hedionda Lagoon

LOE ID:

78203

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for PAH, Low molecular weight.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Low molecular weight PAHs is 1442 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 81952, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 9
Agua Hedionda Lagoon

LOE ID:

78212

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for PAH, High molecular weight.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for High molecular weight PAHs is 9600 ng/g dry weight (Long et al., 1995).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 81952, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 9
Agua Hedionda Lagoon

LOE ID:

77213

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The one sample did not exceed the objective. Data were reported on a dry weight basis and were converted to a wet weight basis by multiplying the dry-weight concentration by a factor of 1 minus the percentage of moisture content expressed as a decimal. The total PAHs were calculated as the potency equivalency concentration or the sum of the toxic equivalency factors multiplied by the concentrations of: Acenaphthene, Acenaphthylene, Anthracene, Benz[a]anthracene, Benzo[a]pyrene, Benzo[b]fluoranthene, Benzo[g,h,i]perylene, Benzo[k]fluoranthene, Dibenzo[a,h]anthracene, Chrysene, Fluoranthene, Fluorene, Indeno[1,2,3-c,d]pyrene, Phenanthrene, and Pyrene.

Data Reference:

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for polycyclic aromatic hydrocarbons in shellfish tissue is 1.1 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008; USEPA, 2000)

Guideline Reference:

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Guideline Reference:

Guidance for Assessing Chemical Contaminant Data for Use In Fish Advisories Volume 1: Fish Sampling and Analysis

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81952, PAHs (Polycyclic Aromatic Hydrocarbons)	Region 9
Agua Hedionda Lagoon

LOE ID:

78204

Pollutant:

PAHs (Polycyclic Aromatic Hydrocarbons)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for PAHs (Polycyclic Aromatic Hydrocarbons).

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Quality Assurance Project Plan from Southern California Bight.

Evaluation Guideline:

In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Total PAHs is 1800 ug/g (Fairey et al., 2001).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):


DECISION ID	81429	Region 9
Agua Hedionda Lagoon

Pollutant:	PCBs (Polychlorinated biphenyls)
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 sections 3.5 and 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Three lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the evaluation guideline in sediment and 0 of 1 sample exceeds the evaluation guideline in tissue. One of 5 samples exhibited sediment toxicity. 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 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. Zero of 5 samples exceed the evaluation guideline in sediment and 0 of 1 sample exceeds the evaluation guideline in tissue and these sample sizes are insufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81429, PCBs (Polychlorinated biphenyls)	Region 9
Agua Hedionda Lagoon

LOE ID:

72896

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

The sample did not exceed the objective. Data were reported on a dry weight basis and were converted to a wet weight basis by multiplying the dry-weight concentration by a factor of 1 minus the percentage of moisture content expressed as a decimal. Total PCB was assessed for as follows: PCB aroclors and congeners were summed separately and the sum that yielded the highest value was used for the assessment.

Data Reference:

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for polychlorinated biphenyls in shellfish tissue is 3.9 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008)

Guideline Reference:

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81429, PCBs (Polychlorinated biphenyls)	Region 9
Agua Hedionda Lagoon

LOE ID:

78205

Pollutant:

PCBs (Polychlorinated biphenyls)

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for PCB, Total.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Development and evaluation of consensus-based sediment effect concentrations for polychlorinated biphenyls. Environmental Toxicology and Chemistry. 19(5): 1403-1413

Evaluation Guideline:

In marine and estuarine sediments the sediment quality guideline (predictive of sediment toxicity for sediment-dwelling organisms) for Total PCBs is 400 ng/g (MacDonald et al., 2000b).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 81429, PCBs (Polychlorinated biphenyls)	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):


DECISION ID	81430	Region 9
Agua Hedionda Lagoon

Pollutant:	Phenanthrene
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 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the 5 samples exceed the evaluation guideline. One of 5 samples exhibited sediment toxicity. 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 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. Zero of the 5 samples exceed the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81430, Phenanthrene	Region 9
Agua Hedionda Lagoon

LOE ID:

78214

Pollutant:

Phenanthrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Phenanthrene.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Phenanthrene is 543.53 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 81430, Phenanthrene	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):


DECISION ID	81634	Region 9
Agua Hedionda Lagoon

Pollutant:	Pyrene
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 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of the 5 samples exceed the evaluation guideline. One of 5 samples exhibited sediment toxicity. 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 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. Zero of the 5 samples exceed the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81634, Pyrene	Region 9
Agua Hedionda Lagoon

LOE ID:

78215

Pollutant:

Pyrene

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Pyrene.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Pyrene is 1397.4 ng/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 81634, Pyrene	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board


DECISION ID	81581	Region 9
Agua Hedionda Lagoon

Pollutant:	Selenium
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(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 3.5 of the Listing Policy. Under section 3.5 a single line(s) of evidence are necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. Zero of 1 sample exceeds the evaluation guideline. 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 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.Zero of 1 sample exceeds the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81581, Selenium	Region 9
Agua Hedionda Lagoon

LOE ID:

72910

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for selenium in shellfish tissue is 11 ppm. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day. A background dietary consumption rate of 0.114 mg/day is applied for this micronutrient. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008)

Guideline Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):


DECISION ID	81685	Region 9
Agua Hedionda Lagoon

Pollutant:	Silver
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 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the water quality objective. One of 5 samples exhibited sediment toxicity. 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 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. Zero of 5 samples exceed the water quality 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81685, Silver	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81685, Silver	Region 9
Agua Hedionda Lagoon

LOE ID:

78216

Pollutant:

Silver

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Silver.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Development and evaluation of sediment quality guidelines for Florida coastal waters. Ecotoxicology 5: 253-278

Evaluation Guideline:

In marine and estuarine sediments the probable effect level (predictive of sediment toxicity for sediment-dwelling organisms) for Silver is 1.77 ug/g dry weight (MacDonald et al., 1996).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.


DECISION ID	81686	Region 9
Agua Hedionda Lagoon

Pollutant:	Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)
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 3.5 of the Listing Policy. Under section 3.5, a single line(s) of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. Zero of 1 sample exceeds the evaluation guideline. 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 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. Zero of 1 sample exceeds the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81686, Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)	Region 9
Agua Hedionda Lagoon

LOE ID:

72913

Pollutant:

Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Shellfish

Beneficial Use:

Shellfish Harvesting

Number of Samples:

Number of Exceedances:

Data and Information Type:

Shellfish surveys

Data Used to Assess Water Quality:

Data Reference:

State Mussel Watch Program Data 1977-2000; Winter 2007-Winter 2009. State Water Resources Control Board

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Prevalence of Selected Target Chemical Contaminants in Sport Fish From Two California Lakes: Public health designed screening study. Sacramento, CA: Office of Environmental Health Hazard Assessment

Evaluation Guideline:

The modified OEHHA Fish Contaminant Goal for total DDT in shellfish tissue is 23 ppb. This screening level assumes an average body weight of 70 kg and a consumption rate of 21 g/day for a 30 year exposure over a 70-year lifetime. This constituent is a carcinogen therefore the risk level is set to one in a million. (Brodberg, R.K., and G.A. Pollock, 1999; Klasing, S., and R. Brodberg, 2008)

Guideline Reference:

Guideline Reference:

Development of Fish Contaminant Goals and Advisory Tissue Levels for Common Contaminants in California Sport Fish: Chlordane, DDTs, Dieldrin, Methylmercury, PCBs, Selenium, and Toxaphene

Spatial Representation:

Samples are collected by hand from three sub-locations for each site. The composite sample was collected from AHLG.

Temporal Representation:

Representative samples of locally abundant species were collected during the winter on 1/20/2008

Environmental Conditions:

QAPP Information:

QAPP Information Reference(s):


DECISION ID	81736	Region 9
Agua Hedionda Lagoon

Pollutant:	Zinc
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(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 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 5 samples exceed the evaluation guideline. One of 5 samples exhibited sediment toxicity. 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 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. Zero of 5 samples exceed the evaluation guideline 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 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 81736, Zinc	Region 9
Agua Hedionda Lagoon

LOE ID:

78213

Pollutant:

Zinc

LOE Subgroup:

Pollutant-Sediment

Matrix:

Sediment

Fraction:

Total

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

PHYSICAL/CHEMICAL MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Bight data for Agua Hedionda Lagoon to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Zinc.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Incidence of adverse biological effects within ranges of chemical concentrations in marine and estuary sediments. Environmental Management. 19, (1): 81-97

Evaluation Guideline:

In marine and estuarine sediments the effects range median (predictive of sediment toxicity for sediment-dwelling organisms) for Zinc is 410 ug/g dry weight (Long et al., 1995).

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Agua Hedionda Lagoon was collected at 5 monitoring sites [ 904_6269, 904_6270, 904_6271, 904_6280, 904_6282]

Temporal Representation:

Data was collected on a single day 7/8/2008.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

The Quality Assurance Project Plan from Southern California Bight was followed.

QAPP Information Reference(s):

Quality Assurance Project Plan from Southern California Bight.

Line of Evidence (LOE) for Decision ID 81736, Zinc	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):

Data for Various Pollutants in the Agua Hedionda Lagoon and Navy Storm Water, 2001-2008.


DECISION ID	92190	Region 9
Agua Hedionda Lagoon

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 is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. One of 60 samples exceeds the basin plan objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the 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. One of 60 samples exceeds the basin plan objective and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

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 because applicable water quality standards are not being exceeded.

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 92190, pH	Region 9
Agua Hedionda Lagoon

LOE ID:

72897

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:

One of the 60 samples exceeded the objective.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

In bays and estuaries the pH shall not be depressed below 7.0 nor raised above 9.0.

Objective/Criterion Reference:

Data for Various Pollutants from Ambient Bay and Lagoon, 2003-2005.

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from the "intake" station.

Temporal Representation:

Samples were collected monthly from January 2004 to December 2008.

Environmental Conditions:

QAPP Information:

No quality assurance information was provided.

QAPP Information Reference(s):


DECISION ID	85627	Region 9
Agua Hedionda Lagoon

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)(2016)
Revision Status	Original
Sources:	A Source Unknown
Expected TMDL Completion Date:	2027
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 3.6 of the Listing Policy. Under section 3.6 at least two lines of evidence are necessary to assess listing status for pollutants in sediment, and pollutant concentrations in sediment must be associated with sediment toxicity to justify adding that pollutant to the CWA section 303(d) List. Waters may also be placed on the section 303(d) list for toxicity alone. One line of evidence are available in the administrative record to assess this pollutant. Three of the eight samples exceed the objective. Three of eight samples exhibited sediment toxicity. 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 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. Three of the eight samples exceed the objective and this sample size is sufficient to determine, with the power and confidence of the Listing Policy, the applicable beneficial use support rating. A minimum of 16 samples is needed to determine if a beneficial use is fully supported using table 3.1. 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 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 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 85627, Toxicity	Region 9
Agua Hedionda Lagoon

LOE ID:

72914

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Three samples were collected to test for toxicity. Two of the three samples exhibited statistically significant toxicity. The toxicity tests included survival of Eohaustorius estuarius. Each sample is a sediment composites from three different sites.

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The samples were collected at station 904AHL_2003 - composite from 904_AHL2M_2003, 904_AHL3L_2003, 904_AHL3M_2003. Station 904AHL_2004 - composite from 904_AHL2L2_2004, 904_AHL3L1_2004, 904_AHL3R1_2004, and Station 904AHL_2005 - composite from 904_AHL3L1_2005, 904_AHL3M1_2005, 904_AHL3R1_2005.

Temporal Representation:

The samples were collected in July 2003, 2004, and 2005.

Environmental Conditions:

QAPP Information:

The data was collected under the County of San Diego Ambient Bay and Lagoon Monitoring Project 2003-2005. Annual Report for the Receiving Waters and Urban Runoff Monitoring section covered under the San Diego County Municipal National Pollutant Discharge Elimination System (NPDES) Permit (RWQCB-Order NO. R9-2007-0001).

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 85627, Toxicity	Region 9
Agua Hedionda Lagoon

LOE ID:

72909

Pollutant:

Toxicity

LOE Subgroup:

Toxicity

Matrix:

Sediment

Fraction:

None

Beneficial Use:

Estuarine Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

TOXICITY TESTING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Methods for Measuring the Acute Toxicity of Effluents and Receiving Waters to Freshwater and Marine Organisms, Fifth Edition. EPA-821-R-02-012

Evaluation Guideline:

Guideline Reference:

Guideline Reference:

Spatial Representation:

The samples were collected from sites 904_6269, 904_6270, 904_6271, 904_6280, 904_6282 Agua Hedionda Lagoon.

Temporal Representation:

The samples were collected in July 2008.

Environmental Conditions:

QAPP Information:

This data was collected under the Southern California Bight 2008 Regional Marine Monitoring Survey Quality Assurance Plan.

QAPP Information Reference(s):