Draft California 2026 Integrated Report (303(d) List/305(b) Report)

Supporting Information

Regional Board 3 - Central Coast Region

Water Body Name:	Pacific Ocean Shoreline at Point Pinos (Pacific Grove)
Water Body ID:	CAC3095004020240815045346
Water Body Type:	Coastal & Bay Shoreline


DECISION ID	170999	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

Pollutant:	Arsenic
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	During the 2026 cycle, lines of evidence 352456 and 352457 created this decision. Samples for the site 414.0 (original LOEs 3486 and 3485) were previously associated with the waterbody Monterey Bay South (Coastline) during the 2006 cycle. That waterbody will be retired, and samples are now associated with Pacific Ocean at Point Pinos (Pacific Grove). The decision remains do not list. This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under this section, a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of six tissue samples exceed the evaluation guideline applied to the wildlife habitat beneficial use. 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 supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of six tissue samples exceeded the evaluation guideline. 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. 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:

Line of Evidence (LOE) for Decision ID 170999, Arsenic	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352456

Pollutant:

Arsenic

LOE Subgroup:

Testimonial Evidence

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

There is a proposal to Delist Monterey Bay - South (shoreline) for Metals. The existing 1994 listing is based on State Mussel Watch (SMW) metals data from within Monterey Harbor (SWAMP, 2004). No metals impairment exists outside of Monterey Harbor and Monterey Harbor is on the 303(d) List as a separate metals impairment listing (and will remain on the list). Regional Board files indicate State Mussel Watch Program data from 1982 through 1993 was used as the basis for listing Monterey Bay - South for metals impairment. The available data from 1982 through 1993 were compared to Elevated Data Levels (EDLs) and Median International Standards (MIS). EDLs are no longer considered valid guidelines for determining attainment of water quality standards. The MIS values that were used as indicator values were derived from freshwater fish and therefore were not appropriate comparison values for mussel tissue data. MIS values also are not regulatory values or criteria in the United States. Subsequent to the 1994 listing, additional State Mussel Watch data from 1994 through 1997 has become available. All of the available data were compiled for this evaluation of Monterey Bay - South with respect to metals impairment.

Data Reference:

Data and Information submissions and corrections for the 2004 303(d) list. Proposal to delist Monterey Bay South (shoreline) for metals and pesticides. Includes State Mussel Watch data. San Luis Obispo, CA: Central Coast RWQCB

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Monterey Bay - South coastline: 3309.5004, at Pacific Grove SMW station (SMW #414.0).

Temporal Representation:

Submittal on 6/14/2004. State Mussel Watch data from 1977 through 1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):

This is a placeholder for previously assessed data that does not have quality assurance information but would require it under newly developed policies. These LOEs were previously assessed and approved at the Regional, State and Federal level in past cycles. The LOEs needed to be moved and/or reassessed but required this reference code for movement within the decision making database.

Line of Evidence (LOE) for Decision ID 170999, Arsenic	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352457

Pollutant:

Arsenic

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Total

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

All six samples exceeded the Cal-OEHHA screening value (CVRWQCB, 2004M). All six samples were below the USEPA's screening value for tissue. Values screened were for total arsenic. OEHHA recommends that, when total arsenic screening values are used and there are many exceedances, inorganic analyses (via outside lab if necessary) should be requested to further evaluate the extent of the problem (Brodberg, pers. comm. 2002). USEPA has determined if study results provide only wet weight measurements of total As, then convert (via calculation) total arsenic results into inorganic estimates by assuming that inorganic As is between 4 or 10% of total As concentration. Using these assumptions, the arsenic samples do not exceed the USEPA criteria.

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

California's Ocean Plan states that, the concentration of organic materials in fish, shellfish or other marine resources used for human consumption shall not bioaccumulate to levels that are harmful to human health .

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

USEPA screening value for inorganic arsenic. In fish tissue, the most appropriate screening value is 1.2 ppm wet weight for inorganic Arsenic. This is supported by EPA scientists and policy makers. (see excerpt from EPA Guidance for Fish Advisories, 2000 and Newport Bay Toxics TMDLs, 2002).

Guideline Reference:

Guidance for assessing chemical contaminant data for use in fish advisories. Vol. 1: Fish sampling and analysis. Third Edition. EPA 823-B-00-007. Washington, D.C.: Office of Water, USEPA

Spatial Representation:

Pacific Grove SMW station at sampling stations 414.0.

Temporal Representation:

Monitored annually since 1977. Most recent ten years of available SMW data for the Pacific Grove sampling location available, from 1988 to 1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):


DECISION ID	171000	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

Pollutant:	Cadmium
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	During the 2026 cycle, lines of evidence 352458 and 352459 created this decision. Samples for the site 414.0 (original LOEs 3487 and 3488) were previously associated with the waterbody Monterey Bay South (Coastline) during the 2006 cycle. That waterbody will be retired, and samples are now associated with Pacific Ocean at Point Pinos (Pacific Grove). The decision remains do not list. This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under this section, a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 28 tissue samples exceed the evaluation guideline applied to the wildlife habitat beneficial use. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of 28 tissue samples exceeded the evaluation guideline. 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:

Line of Evidence (LOE) for Decision ID 171000, Cadmium	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352459

Pollutant:

Cadmium

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Total

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

All 28 samples did not exceed the OEHHA screening value (SMWP, 2004). All six samples were well below the USEPA's screening value for tissue.

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

OEHHA Screening Guideline = 3.0 mg/kg (Brodberg and Pollock, 1999).

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

Spatial Representation:

Samples were monitored at the Pacific Grove CA State Mussell Watch station.

Temporal Representation:

Samples were monitored annually from 1977 to 2003. All the data was used for all the years. Each year had one sampling data point, except for years 1977 and 1978, which had two sampling points.

Environmental Conditions:

QAPP Information:

All data collected by CA State Mussel Watch program following their QA.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 171000, Cadmium	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352458

Pollutant:

Cadmium

LOE Subgroup:

Testimonial Evidence

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

There is a proposal to Delist Monterey Bay - South (shoreline) for Metals. The existing 1994 listing is based on State Mussel Watch (SMW) metals data from within Monterey Harbor (SMWP, 2004). No metals impairment exists outside of Monterey Harbor and Monterey Harbor is on the 303(d) List as a separate metals impairment listing (and will remain on the list). Regional Board files indicate State Mussel Watch Program data from 1982 through 1993 was used as the basis for listing Monterey Bay South for metals impairment. The available data from 1982 through 1993 were compared to Elevated Data Levels (EDLs) and Median International Standards (MIS). EDLs are no longer considered valid guidelines for determining attainment of water quality standards. The MIS values that were used as indicator values were derived from freshwater fish and therefore were not appropriate comparison values for mussel tissue data. MIS values also are not regulatory values or criteria in the United States. Subsequent to the 1994 listing, additional State Mussel Watch data from 1994 through 1997 has become available. All of the available data were compiled for this evaluation of Monterey Bay South with respect to metals impairment.

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Monterey Bay - South coastline: 3309.5004, at Pacific Grove SMW station (SMW #414.0).

Temporal Representation:

Submittal on 6/14/2004. State Mussel Watch data from 1977 through 1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):


DECISION ID	171001	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

Pollutant:	Chlordane
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	During the 2026 cycle, lines of evidence 352464 and 352465 created this decision. Samples for the site 414.0 (original LOEs 3493 and 3494) were previously associated with the waterbody Monterey Bay South (Coastline) during the 2006 cycle. That waterbody will be retired, and samples are now associated with Pacific Ocean at Point Pinos (Pacific Grove). The decision remains do not list. This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under this section, a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 10 tissue samples exceed the evaluation guideline applied to the wildlife habitat beneficial use. 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 supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of 10 tissue samples exceeded the evaluation guideline. 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. 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:

Line of Evidence (LOE) for Decision ID 171001, Chlordane	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352465

Pollutant:

Chlordane

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Total

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

A total of ten samples were collected; none exceed the OEHHA screening value (SWAMP, 2004).

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

OEHHA screening values for fish consumption.

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

Spatial Representation:

All samples were collected from the Pacific Grove sampling station.

Temporal Representation:

Data include the most recent ten years of SMW data; years 1988-1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 171001, Chlordane	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352464

Pollutant:

Chlordane

LOE Subgroup:

Testimonial Evidence

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

There is a proposal to Delist Monterey Bay - South (shoreline) for Pesticides. The existing 1994 listing is based on State Mussel Watch (SMW) pesticides data that was compared to Elevated Data Levels (EDLs - which are now considered inappropriate comparison values), (SWAMP, 2004). The pesticide data from 1988 to present does not exceed current applicable guidance values and, in fact, the only station sampled since 1988 is the station that is used by the SMW program as a reference site for the central coast (presumed to be relatively unimpaired). No pesticide impairment exists outside of Moss Landing Harbor and Moss Landing Harbor will remain on the List as a separate pesticide impairment.

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Monterey Bay - South coastline: 3309.5004, at Pacific Grove SMW station (SMW #414.0).

Temporal Representation:

Submittal on 6/14/2004. State Mussel Watch data from 1982 through 1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):


DECISION ID	171002	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

Pollutant:	Chromium
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	During the 2026 cycle, lines of evidence 352460 and 352461 created this decision. Samples for the site 414.0 (original LOEs 3489 and 3490) were previously associated with the waterbody Monterey Bay South (Coastline) during the 2006 cycle. That waterbody will be retired, and samples are now associated with Pacific Ocean at Point Pinos (Pacific Grove). The decision remains do not list. This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under this section, a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of six tissue samples exceed the evaluation guideline applied to the wildlife habitat beneficial use. 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 supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of six tissue samples exceeded the evaluation guideline. 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. 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:

Line of Evidence (LOE) for Decision ID 171002, Chromium	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352460

Pollutant:

Chromium

LOE Subgroup:

Testimonial Evidence

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

There is a proposal to Delist Monterey Bay - South (shoreline) for Metals. The existing 1994 listing is based on State Mussel Watch (SMW) metals data from within Monterey Harbor (SWAMP, 2004). No metals impairment exists outside of Monterey Harbor and Monterey Harbor is on the 303(d) List as a separate metals impairment listing (and will remain on the list). Regional Board files indicate State Mussel Watch Program data from 1982 through 1993 was used as the basis for listing Monterey Bay South for metals impairment. The available data from 1982 through 1993 were compared to Elevated Data Levels (EDLs) and Median International Standards (MIS). EDLs are no longer considered valid guidelines for determining attainment of water quality standards. The MIS values that were used as indicator values were derived from freshwater fish and therefore were not appropriate comparison values for mussel tissue data. MIS values also are not regulatory values or criteria in the United States. Subsequent to the 1994 listing, additional State Mussel Watch data from 1994 through 1997 has become available. All of the available data were compiled for this evaluation of Monterey Bay South with respect to metals impairment.

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Monterey Bay - South coastline: 3309.5004, at Pacific Grove SMW station (SMW #414.0).

Temporal Representation:

Submittal on 6/14/2004. State Mussel Watch data from 1977 through 1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 171002, Chromium	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352461

Pollutant:

Chromium

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Total

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

None of the six samples exceeded the Cal-OEHHA screening value (SWAMP, 2004).

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

Screening values were based on MIS (Median International Standard. MIS values are no longer considered valid guidelines for determining attainment of water quality standards. The MIS values that were used as indicator values were derived from freshwater fish and therefore were not appropriate comparison values for mussel tissue data. MIS values are no longer considered valid; currently an acceptable criteria for chromium in tissue does not exist.

Guideline Reference:

Compilation of legal limits for hazardous substances in fish and fishery products. Appendix V. Median International Standards

Spatial Representation:

Pacific Grove SMW station.

Temporal Representation:

Monitored annually since 1977. Most recent ten years of available SMW data for the Pacific Grove sampling location available.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):


DECISION ID	171003	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

Pollutant:	DDT (Dichlorodiphenyltrichloroethane)
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	During the 2026 cycle, lines of evidence 352466 and 352467 created this decision. Samples for the site 414.0 (original LOEs 3496, 3495) were previously associated with the waterbody Monterey Bay South (Coastline) during the 2006 cycle. That waterbody will be retired, and samples are now associated with Pacific Ocean at Point Pinos (Pacific Grove). The decision remains do not list. This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under this section, a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 10 tissue samples exceed the evaluation guideline applied to the wildlife habitat beneficial use. 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 supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of 10 tissue samples exceeded the evaluation guideline. 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. 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:

Line of Evidence (LOE) for Decision ID 171003, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352466

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Testimonial Evidence

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

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:

SWAMP

Water Quality Objective/Criterion:

Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Monterey Bay - South coastline: 3309.5004, at Pacific Grove SMW station (SMW #414.0).

Temporal Representation:

Submittal on 6/14/2004. State Mussel Watch data from 1982 through 1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 171003, DDT (Dichlorodiphenyltrichloroethane)	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352467

Pollutant:

DDT (Dichlorodiphenyltrichloroethane)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Total

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

A total of ten samples were collected; none exceeded the OEHHA screening value (SWAMP, 2004).

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

OEHHA screening values for fish consumption.

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

Spatial Representation:

All samples were collected from the Pacific Grove sampling station.

Temporal Representation:

Data include the most recent ten years of SMW data; years 1988-1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):


DECISION ID	171004	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

Pollutant:	Dieldrin
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	During the 2026 cycle, lines of evidence 352468 and 352469 created this decision. Samples for the site 414.0 (original LOEs 3497, 3498) were previously associated with the waterbody Monterey Bay South (Coastline) during the 2006 cycle. That waterbody will be retired, and samples are now associated with Pacific Ocean at Point Pinos (Pacific Grove). The decision remains do not list. This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under this section, a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 10 tissue samples exceed the evaluation guideline applied to the wildlife habitat beneficial use. 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 supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of 10 tissue samples exceeded the evaluation guideline. 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. 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:

Line of Evidence (LOE) for Decision ID 171004, Dieldrin	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352468

Pollutant:

Dieldrin

LOE Subgroup:

Testimonial Evidence

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

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:

SWAMP

Water Quality Objective/Criterion:

Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Monterey Bay - South coastline: 3309.5004, at Pacific Grove SMW station (SMW #414.0).

Temporal Representation:

Submittal on 6/14/2004. State Mussel Watch data from 1982 through 1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 171004, Dieldrin	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352469

Pollutant:

Dieldrin

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Total

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

A total of ten samples were collected; none exceeded the OEHHA screening value (SWAMP, 2004).

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

OEHHA screening values for fish consumption.

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

Spatial Representation:

All samples were collected from the Pacific Grove sampling station.

Temporal Representation:

Data include the most recent ten years of SMW data; years 1988-1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):


DECISION ID	171005	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

Pollutant:	Endosulfan
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	During the 2026 cycle, lines of evidence 352470 and 352471 created this decision. Samples for the site 414.0 (original LOEs 3499, 3500) were previously associated with the waterbody Monterey Bay South (Coastline) during the 2006 cycle. That waterbody will be retired, and samples are now associated with Pacific Ocean at Point Pinos (Pacific Grove). The decision remains do not list. This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under this section, a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 10 tissue samples exceed the evaluation guideline applied to the wildlife habitat beneficial use. 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 supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of 10 tissue samples exceeded the evaluation guideline. 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. 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:

Line of Evidence (LOE) for Decision ID 171005, Endosulfan	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352470

Pollutant:

Endosulfan

LOE Subgroup:

Testimonial Evidence

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

There is a proposal to Delist Monterey Bay South (shoreline) for Pesticides. The existing 1994 listing is based on State Mussel Watch (SMW) pesticides data that was compared to Elevated Data Levels (EDLs which are now considered inappropriate comparison values), (SMWP, 2004). The pesticide data from 1988 to present does not exceed current applicable guidance values and, in fact, the only station sampled since 1988 is the station that is used by the SMW program as a reference site for the central coast (presumed to be relatively unimpaired). No pesticide impairment exists outside of Moss Landing Harbor and Moss Landing Harbor will remain on the List as a separate pesticide impairment.

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Monterey Bay - South coastline: 3309.5004, at Pacific Grove SMW station (SMW #414.0).

Temporal Representation:

Submittal on 6/14/2004. State Mussel Watch data from 1982 through 1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 171005, Endosulfan	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352471

Pollutant:

Endosulfan

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Total

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

A total of ten samples were collected; none exceeded the OEHHA screening value and six were non-detects (SMWP, 2004).

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

OEHHA screening values for fish consumption.

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

Spatial Representation:

All samples were collected from the Pacific Grove sampling station.

Temporal Representation:

Data include the most recent ten years of SMW data; years 1988-1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):


DECISION ID	171006	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

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:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	During the 2026 cycle, lines of evidence 352472 and 352473 created this decision. Samples for the site 414.0 (original LOEs 33501, 3502) were previously associated with the waterbody Monterey Bay South (Coastline) during the 2006 cycle. That waterbody will be retired, and samples are now associated with Pacific Ocean at Point Pinos (Pacific Grove). The decision remains do not list. This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under this section, a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of 10 tissue samples exceed the evaluation guideline applied to the wildlife habitat beneficial use. 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 supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of 10 tissue samples exceeded the evaluation guideline. 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. 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:

Line of Evidence (LOE) for Decision ID 171006, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352472

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Testimonial Evidence

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

There is a proposal to Delist Monterey Bay - South (shoreline) for Pesticides. The existing 1994 listing is based on State Mussel Watch (SMW) pesticides data that was compared to Elevated Data Levels (EDLs - which are now considered inappropriate comparison values), (SMWP, 2004). The pesticide data from 1988 to present does not exceed current applicable guidance values and, in fact, the only station sampled since 1988 is the station that is used by the SMW program as a reference site for the central coast (presumed to be relatively unimpaired). No pesticide impairment exists outside of Moss Landing Harbor and Moss Landing Harbor will remain on the List as a separate pesticide impairment.

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Monterey Bay - South coastline: 3309.5004, at Pacific Grove SMW station (SMW #414.0).

Temporal Representation:

Submittal on 6/14/2004. State Mussel Watch data from 1982 through 1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 171006, Lindane/gamma Hexachlorocyclohexane (gamma-HCH)	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352473

Pollutant:

Lindane/gamma Hexachlorocyclohexane (gamma-HCH)

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Total

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

A total of ten samples were collected; none exceeded the OEHHA screening value and eight were non-detects (SMWP, 2004).

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

OEHHA screening values for fish consumption.

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

Spatial Representation:

All samples were collected from the Pacific Grove sampling station.

Temporal Representation:

Data include the most recent ten years of SMW data; years 1988-1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):


DECISION ID	171007	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

Pollutant:	Selenium
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	During the 2026 cycle, lines of evidence 352462 and 352463 created this decision. Samples for the site 414.0 (original LOEs 3492, 3491) were previously associated with the waterbody Monterey Bay South (Coastline) during the 2006 cycle. That waterbody will be retired, and samples are now associated with Pacific Ocean at Point Pinos (Pacific Grove). The decision remains do not list. This pollutant is being considered for placement on the section 303(d) list under section 3.5 of the Listing Policy. Under this section, a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. Zero of six tissue samples exceed the evaluation guideline applied to the wildlife habitat beneficial use. 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 supported using table 3.1. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Zero of six tissue samples exceeded the evaluation guideline. 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. 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:

Line of Evidence (LOE) for Decision ID 171007, Selenium	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352463

Pollutant:

Selenium

LOE Subgroup:

Pollutant-Tissue

Matrix:

Tissue

Fraction:

Total

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

None of the six samples exceeded the Cal-OEHHA or USEPA screening value (CVRWQCB, 2004M).

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

OEHHA and USEPA screening values for fish consumption.

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

Spatial Representation:

Pacific Grove SMW station.

Temporal Representation:

Monitored annually since 1977. Most recent ten years of available SMW data for the Pacific Grove sampling location available.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 171007, Selenium	Region 3
Pacific Ocean Shoreline at Point Pinos (Pacific Grove)

LOE ID:

352462

Pollutant:

Selenium

LOE Subgroup:

Testimonial Evidence

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Wildlife Habitat

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

There is a proposal to Delist Monterey Bay South (shoreline) for Metals. The existing 1994 listing is based on State Mussel Watch (SMW) metals data from within Monterey Harbor (SMWP, 2004). No metals impairment exists outside of Monterey Harbor and Monterey Harbor is on the 303(d) List as a separate metals impairment listing (and will remain on the list). Regional Board files indicate State Mussel Watch Program data from 1982 through 1993 was used as the basis for listing Monterey Bay - South for metals impairment. The available data from 1982 through 1993 were compared to Elevated Data Levels (EDLs) and Median International Standards (MIS). EDLs are no longer considered valid guidelines for determining attainment of water quality standards. The MIS values that were used as indicator values were derived from freshwater fish and therefore were not appropriate comparison values for mussel tissue data. MIS values also are not regulatory values or criteria in the United States. Subsequent to the 1994 listing, additional State Mussel Watch data from 1994 through 1997 has become available. All of the available data were compiled for this evaluation of Monterey Bay - South with respect to metals impairment.

Data Reference:

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

SWAMP Data:

SWAMP

Water Quality Objective/Criterion:

Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.

Objective/Criterion Reference:

Water Quality Control Plan Ocean Waters of California. California Ocean Plan 1997. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Monterey Bay - South coastline: 3309.5004, at Pacific Grove SMW station (SMW #414.0).

Temporal Representation:

Submittal on 6/14/2004. State Mussel Watch data from 1977 through 1997.

Environmental Conditions:

QAPP Information:

All data collected by State Mussel Watch program follows their QA.

QAPP Information Reference(s):