Final California 2010 Integrated Report (303(d) List/305(b) Report)

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Assembly Bill 411:
Weekly monitoring is required from April to October at all beaches with more than 50,000 annual visitors or at beaches located in areas adjacent to storm drains that flow during the summer. Some counties continue testing year round. Weekly samples must be tested for three indicator organisms: total coliform, fecal coliform, and enterococcus. Beaches that fail to meet the state's criteria for any one of the three indicators are to be posted with conspicuous warning signs to notify the public of health risks associated with swimming in these areas. Closings and advisories are issued on a discretionary basis. AB 411 requires the State Water Resources Control Board (SWRCB) to post monthly beach data from coastal counties throughout the state. The surveys list beach warnings, beach closures, and rain advisories resulting from bacterial contamination.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Warnings and advisories for Stillwater Cove Beach were posted from 1999-2004. One closure occurred in 2002.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6276, Indicator Bacteria	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

379

Pollutant:

Indicator Bacteria

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Water Contact Recreation

Number of Samples:

175

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Available data indicate sufficient exceedances of bacterial indicator objectives. There were 18 out of 175 samples exceeding the single sample maximum for fecal coliform, and 13 out of 131 exceedances of the geomean for enterococci (USEPA, 2007).

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Title 17 C.C.R. Section 7958 states: Based on a single sample, the density of bacteria in water from each sampling station at a public beach or public water contact sports area shall not exceed:
(A) 1,000 total coliform bacteria per 100 milliliters, if the ratio of fecal/total coliform bacteria exceeds 0.1; or
(B) 10,000 total coliform bacteria per 100 milliliters; or
(C) 400 fecal coliform bacteria per 100 milliliters; or
(D) 104 enterococcus bacteria per 100 milliliters.

Based on the mean of the logarithms of the results of at least five weekly samples during any 30-day sampling period, the density of bacteria in water from any sampling station at a public beach or public water contact sports area, shall not exceed:
(A) 1,000 total coliform bacteria per 100 milliliters; or
(B) 200 fecal coliform bacteria per 100 milliliters; or
(C) 35 enterococcus bacteria per 100 milliliters. (DHS, 1999)

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Station ID# MON70 (at Beach and Tennis Club)

Temporal Representation:

04/02/2001-10/11/2005

Environmental Conditions:

QAPP Information:

Data record: 2001-2005, Monterey County Health Dept.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6276, Indicator Bacteria	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

375

Pollutant:

Enterococcus

LOE Subgroup:

Health Advisories

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Monterey County posted Rain Advisories for all beaches in the county on 15 occasions from 2000 to 2004. Each advisory was posted for several days surrounding rain events in the county (CCRWQCB, 2004d).

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

The rain advisories are issued for all beaches in Monterey County, including Stillwater Cove Beach (between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach).

Temporal Representation:

Rain advisories for the beaches were issued from February 2000 through November 2004.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6276, Indicator Bacteria	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

374

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Water Contact Recreation

Number of Samples:

122

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Monterey County collected 122 bacteria samples from 2001 through 2004 at Del Monte Beach. 30-day mean concentrations of total coliform were calculated. None of 77 means were in exceedance of the criteria. Three of 122 measurements were in violation of the criterion. All violations occurred in September of 2003 (CCRWQCB, 2004d).

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

AB411: Based on a single sample, the density of total coliform in water from each sampling station at a public beach or public water contact sports area shall not exceed 1,000 MPN/100 ml, if the ratio of fecal/total coliform bacteria exceeds 0.1.

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Stillwater Cove Beach was sampled weekly April 1 - October 31 and monthly November 1 - March 30. All violations occurred in September of 2003.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6276, Indicator Bacteria	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

373

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Monterey County collected 122 bacteria samples from 2001 through 2004 at Stillwater Cove Beach. Thirty-day mean concentrations of total coliform were calculated. None of 79 means were in exceedance of the criteria (CCRWQCB, 2004d).

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

AB411: Based on the mean of the logarithms of the results of at least five weekly samples during any 30-day sampling period, the density of total coliform in water from any sampling station at a public beach or public water contact sports area, shall not exceed 1,000 MPN/100 ml.

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Stillwater Cove Beach was sampled weekly April 1 - October 31 and monthly November 1 - March 30.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6276, Indicator Bacteria	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

372

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Water Contact Recreation

Number of Samples:

122

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Monterey County collected 122 bacteria samples from 2001 through 2004 at Stillwater Cove Beach. None of 122 samples were in exceedance of the single sample criterion for total coliform (CCRWQCB, 2004d).

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

AB411: The single sample maximum criterion for total coliform in marine waters = 10,000 MPN/100 ml.

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Stillwater Cove Beach was sampled weekly April 1 - October 31 and monthly November 1 - March 30.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6276, Indicator Bacteria	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

376

Pollutant:

Enterococcus

LOE Subgroup:

Health Advisories

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Warnings and advisories for Stillwater Cove Beach were posted from 1999-2004. One closure occurred in 2002.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6276, Indicator Bacteria	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

378

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:

Monterey County collected 122 bacteria samples from 2001 through 2004 at Stillwater Cove Beach. Thirty-day mean concentrations of Enterococcus were calculated. Eight of 81 means were in exceedance of the criteria (CCRWQCB, 2004d).

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

AB411: Based on the mean of the logarithms of the results of at least five weekly samples during any 30-day sampling period, the density of Enterococcus in water from any sampling station at a public beach or public water contact sports area, shall not exceed 35 MPN/100 ml.

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Stillwater Cove Beach was sampled weekly April 1 - October 31 and monthly November 1 - March 30.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6276, Indicator Bacteria	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

370

Pollutant:

Total Coliform

LOE Subgroup:

Health Advisories

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Rain advisories for the beaches were issued from February 2000 through November 2004.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 6276, Indicator Bacteria	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

377

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

122

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Monterey County collected 122 bacteria samples from 2001 through 2004 at Stillwater Cove Beach. Seven of 122 samples were in exceedance of the single sample criterion for Enterococcus (CCRWQCB, 2004d).

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

AB411: The single sample maximum criterion for Enterococcus in marine waters = 104 MPN/100 ml.

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Stillwater Cove Beach was sampled weekly April 1 - October 31 and monthly November 1 - March 30.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):


DECISION ID	15616	Region 3
Pacific Ocean at Stillwater Cove Beach

Pollutant:	Escherichia coli (E. coli)
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:	This pollutant is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 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. When compared to the Ocean Plan Objectives for Water Contact Recreation, none of 4 samples exceeded the single sample maximum Objective. No geomean assessments were made because no two samples were collected with a given 30-day period. 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. none of 4 samples exceeded the single sample maximum Objective and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. In addition, the sample size is insufficient to determine if the beneficial use is impaired. 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 it cannot be determined if 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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 15616, Escherichia coli (E. coli)	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

20003

Pollutant:

Escherichia coli (E. coli)

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Stillwater Cove Beach to determine beneficial use support and results are as follows: 0 of 4 samples exceed the criterion for Escherichia coli.

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

USEPA Ambient Water Quality Criteria for Bacteria -1986.

Objective/Criterion Reference:

Evaluation Guideline:

Single sample maximum allowable density for E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15)

Guideline Reference:

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

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Stillwater Cove Beach was collected at one AB411 monitoring site (Stillwater Cove)

Temporal Representation:

Data was collected over the time period 2/1/2005 - 10/30/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):


DECISION ID	15618	Region 3
Pacific Ocean at Stillwater Cove Beach

Pollutant:	Fecal Coliform
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:	This pollutant is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 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. When compared to the Ocean Plan Objectives for Water Contact Recreation, 8 of 59 samples exceeded the single sample maximum Objective, 2 of 15 geomean assessments exceeded the geomean 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 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. Eight of 59 samples exceeded the single sample maximum Objective, 2 of 15 geomean assessments exceeded the geomean Objective. Neither of these exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are 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.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 15618, Fecal Coliform	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

19990

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:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Stillwater Cove Beach to determine beneficial use support and results are as follows: 2 of 15 samples exceed the criterion for Coliform, Fecal.

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2005) states that the 30-day geometric mean for fecal coliform shall not exceed 200 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Stillwater Cove Beach was collected at one AB411 monitoring site (Stillwater Cove)

Temporal Representation:

Data was collected over the time period 2/1/2005 - 10/30/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 15618, Fecal Coliform	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

19991

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:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Stillwater Cove Beach to determine beneficial use support and results are as follows: 8 of 59 samples exceed the criterion for Coliform, Fecal.

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2005) states that the single sample maximum for fecal coliform shall not exceed 400 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Stillwater Cove Beach was collected at one AB411 monitoring site (Stillwater Cove)

Temporal Representation:

Data was collected over the time period 2/1/2005 - 10/30/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):


DECISION ID	4679	Region 3
Pacific Ocean at Stillwater Cove Beach

Pollutant:	Total Coliform
Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2006)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. Eight lines of evidence are available in the administrative record to assess this pollutant. Five of the LOE summarize the data and information used in the 2006 assessment. The following is a summary of that information. None of 79 means were in exceedance of the criteria, 0 of 122 and 3 of 122 samples were in exceedance of the single sample criterion for Enterococcus, and these do not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. Twenty one advisories/warnings were posted from 1999 to 2003. Rain Advisories for all beaches in the county were posted on 15 occasions from 2000 to 2004. Three additional LOE summarize data collected weekly between February 2005 and October 2006. When compared to the Ocean Plan Objectives for Water Contact Recreation, none of 60 samples exceeded the single sample maximum Objective, none of 15 geomean assessments exceeded the geomean Objective and 2 of 59 exceeded the total to fecal coliform ratio 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 section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The Assembly Bill 411criteria used complies with the requirements of section 6.1.3 of the Policy. 2. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 3. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 4. Based on section 3.3 the site does not have significant bacterial toxicity and the pollutant is not likely to cause or contribute to the toxic effect. 5. 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 the available data and information, SWRCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards for the pollutant are not exceeded.

USEPA Action (if applicable):

Line of Evidence (LOE) for Decision ID 4679, Total Coliform	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

371

Pollutant:

Total Coliform

LOE Subgroup:

Health Advisories

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Warnings and advisories for Stillwater Cove Beach were posted from 1999-2004. One closure occurred in 2002.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4679, Total Coliform	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

374

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Water Contact Recreation

Number of Samples:

122

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4679, Total Coliform	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

370

Pollutant:

Total Coliform

LOE Subgroup:

Health Advisories

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Temporal Representation:

Rain advisories for the beaches were issued from February 2000 through November 2004.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4679, Total Coliform	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

373

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Stillwater Cove Beach was sampled weekly April 1 - October 31 and monthly November 1 - March 30.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4679, Total Coliform	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

372

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

Total

Beneficial Use:

Water Contact Recreation

Number of Samples:

122

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

AB411: The single sample maximum criterion for total coliform in marine waters = 10,000 MPN/100 ml.

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Stillwater Cove Beach was sampled weekly April 1 - October 31 and monthly November 1 - March 30.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):


DECISION ID	4609	Region 3
Pacific Ocean at Stillwater Cove Beach

Pollutant:	Enterococcus
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	Do Not List on 303(d) list (TMDL required list)(2006)
Revision Status	Original
Sources:	Waste Storage/Storage Tank Leaks (above ground)
Expected TMDL Completion Date:	2021
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Regional Board Conclusion: This pollutant is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. Six lines of evidence are available in the administrative record to assess this pollutant. Four of the LOEs describe data prior to 2005 and are summarized here. None of 76 means were in exceedance of the criteria, 8 of 81 samples were in exceedance of the single sample criterion for Enterococcus, and these do not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. Twenty one advisories/warnings were posted from 1999 to 2003. Rain Advisories for all beaches in the county were posted on 15 occasions from 2000 to 2004. Two additional LOE summarize weekly data collected between February 2005 and October 2006. Six of 60 samples were in exceedance of the single sample criterion for Enterococcus and 2 of 15 samples were in exceedance of the geomean criterion for Enterococcus. Based on section 3.3 the site does not have significant bacterial toxicity and the pollutant is not likely to cause or contribute to the toxic effect. 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 Assembly Bill 411criteria used complies with the requirements of section 6.1.3 of the Policy. 2. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 3. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 4. Based on section 3.3 the site does not have significant bacterial toxicity and the pollutant is not likely to cause or contribute to the toxic effect. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. . State Board Review and Conclusi n: Based on comments received from U.S. EPA (comment letter # 60), on the April 19, 2010 State Water Board staff report for the 2010 Integrated Report, State Water Board staff recommended to place this water body on the 303(d) list for enterococcus based on the addition of 2 LOEs (31434 and 31435) assessing the AB411 (dry weather) data for this water body. Staff reviewed the bacteria data for this water body in the Central Coast Region described in the comment letter. Staff recommendation has changed for this water body - pollutant combination based on evaluation of the dry weather data that was not included in the original Central Coast Region assessment. On August 4, 2010 the State Water Board approved the staff listing recommendation to place this water body on the 303(d) list for enterococcus. The final language for the recommendation is: This pollutant is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. Eight lines of evidence are available in the administrative record to assess this pollutant. Four of the LOEs describe data prior to 2005 and are summarized here. None of 76 means were in exceedance of the criteria, 8 of 81 samples were in exceedance of the single sample criterion for Enterococcus, and these do not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. Twenty one advisories/warnings were posted from 1999 to 2003. Rain Advisories for all beaches in the county were posted on 15 occasions from 2000 to 2004. Two LOEs summarize weekly data collected between February 2005 and October 2006. Six of 60 samples were in exceedance of the single sample criterion for Enterococcus and 2 of 15 samples were in exceedance of the geomean criterion for Enterococcus. Based on section 3.3 the site does not have significant bacterial toxicity and the pollutant is not likely to cause or contribute to the toxic effect. This water body segment is identified as an AB411 beach and data collected during the time frame of April 1st to October 31st (dry weather) is assessed using a four percent exceedance percentage (section 3.3 of Listing Policy). There are two additional lines of evidence for dry weather single sample and geometric mean calculations. Six of 58 samples exceeded the recreational use single sample criteria and 2 of 13 geometric mean calculations exceeded the geometric mean criteria. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination on the section 303(d) list. This conclusion is based on the staff findings that: 1. The Assembly Bill 411criteria used complies with the requirements of section 6.1.3 of the Policy. 2. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 3. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 4. Six of 60 samples were in exceedance of the single sample criterion for Enterococcus and 2 of 15 samples were in exceedance of the geomean criterion for Enterococcus. Neither of these exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 5. Six of 58 dry weather samples exceeded the recreational use water quality objective and this exceeds the allowable frequency listed in Table 3.2 (at a four percent exceedance percentage-AB411) of the Listing Policy. 6. Two of 13 dry weather geo-metric mean calculations exceeded the recreational use geo-metric mean criteria. This exceeds the allowable frequency listed in Table 3.2 (at a four percent exceedance percentage-AB411) of the Listing Policy 7. 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 Review and Conclusi n: Based on comments received from U.S. EPA (comment letter # 60), on the April 19, 2010 State Water Board staff report for the 2010 Integrated Report, State Water Board staff recommended to place this water body on the 303(d) list for enterococcus based on the addition of 2 LOEs (31434 and 31435) assessing the AB411 (dry weather) data for this water body. Staff reviewed the bacteria data for this water body in the Central Coast Region described in the comment letter. Staff recommendation has changed for this water body - pollutant combination based on evaluation of the dry weather data that was not included in the original Central Coast Region assessment. On August 4, 2010 the State Water Board approved the staff listing recommendation to place this water body on the 303(d) list for enterococcus. The final language for the recommendation is: This pollutant is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. Eight lines of evidence are available in the administrative record to assess this pollutant. Four of the LOEs describe data prior to 2005 and are summarized here. None of 76 means were in exceedance of the criteria, 8 of 81 samples were in exceedance of the single sample criterion for Enterococcus, and these do not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. Twenty one advisories/warnings were posted from 1999 to 2003. Rain Advisories for all beaches in the county were posted on 15 occasions from 2000 to 2004. Two LOEs summarize weekly data collected between February 2005 and October 2006. Six of 60 samples were in exceedance of the single sample criterion for Enterococcus and 2 of 15 samples were in exceedance of the geomean criterion for Enterococcus. Based on section 3.3 the site does not have significant bacterial toxicity and the pollutant is not likely to cause or contribute to the toxic effect. This water body segment is identified as an AB411 beach and data collected during the time frame of April 1st to October 31st (dry weather) is assessed using a four percent exceedance percentage (section 3.3 of Listing Policy). There are two additional lines of evidence for dry weather single sample and geometric mean calculations. Six of 58 samples exceeded the recreational use single sample criteria and 2 of 13 geometric mean calculations exceeded the geometric mean criteria. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination on the section 303(d) list. This conclusion is based on the staff findings that: 1. The Assembly Bill 411criteria used complies with the requirements of section 6.1.3 of the Policy. 2. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 3. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 4. Six of 60 samples were in exceedance of the single sample criterion for Enterococcus and 2 of 15 samples were in exceedance of the geomean criterion for Enterococcus. Neither of these exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 5. Six of 58 dry weather samples exceeded the recreational use water quality objective and this exceeds the allowable frequency listed in Table 3.2 (at a four percent exceedance percentage-AB411) of the Listing Policy. 6. Two of 13 dry weather geo-metric mean calculations exceeded the recreational use geo-metric mean criteria. This exceeds the allowable frequency listed in Table 3.2 (at a four percent exceedance percentage-AB411) of the Listing Policy 7. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.

State Board Decision Recommendation:	After review of this Regional Board decision, the State Water Board recommends that this water body - pollutant combination should be placed on the section 303(d) list because applicable water quality standards are being exceeded.

USEPA Action (if applicable):	USEPA approved the listing of this water body as a water quality limited segment requiring a TMDL for this pollutant.

Line of Evidence (LOE) for Decision ID 4609, Enterococcus	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

377

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

122

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

AB411: The single sample maximum criterion for Enterococcus in marine waters = 104 MPN/100 ml.

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Stillwater Cove Beach was sampled weekly April 1 - October 31 and monthly November 1 - March 30.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4609, Enterococcus	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

378

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:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Stillwater Cove Beach was sampled weekly April 1 - October 31 and monthly November 1 - March 30.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4609, Enterococcus	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

20001

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:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Stillwater Cove Beach to determine beneficial use support and results are as follows: 6 of 60 samples exceed the criterion for Enterococci.

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2005) states that the single sample maximum for Enterococcus shall not exceed 104 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Stillwater Cove Beach was collected at one AB411 monitoring site (Stillwater Cove)

Temporal Representation:

Data was collected over the time period 2/1/2005 - 10/30/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4609, Enterococcus	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

20000

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:

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

California Ocean Plan (SWRCB 2005) states that the geometric mean for Enterococcus shall not exceed 35 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Stillwater Cove Beach was collected at one AB411 monitoring site (Stillwater Cove)

Temporal Representation:

Data was collected over the time period 2/1/2005 - 10/30/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4609, Enterococcus	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

31435

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:

State Water Board Staff assessed data for Pacific Ocean at Stillwater Cove Beach to determine beneficial use support and results are as follows: geomean concentrations of Enterococcus were calculated. Two of 13 geomeans were in exceedance of the criteria (CCRWQCB, 2004d).

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

AB 411 - California Ocean Plan (SWRCB 2005) states that the geometric mean for Enterococcus shall not exceed 35 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Stillwater Cove Beach was collected at one AB411 monitoring site (Stillwater Cove)

Temporal Representation:

Data was collected over the time period 4/1/2005 - 10/30/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4609, Enterococcus	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

31434

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:

State Water Board Staff assessed data for Pacific Ocean at Stillwater Cove Beach to determine beneficial use support and results are as follows: 6 of 58 AB 411 samples exceed the criterion for Enterococci.

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

AB 411 - California Ocean Plan (SWRCB 2005) states that the single sample maximum for Enterococcus shall not exceed 104 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Stillwater Cove Beach was collected at one AB411 monitoring site (Stillwater Cove)

Temporal Representation:

Data was collected over the time period 4/1/2005 - 10/30/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4609, Enterococcus	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

376

Pollutant:

Enterococcus

LOE Subgroup:

Health Advisories

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Stillwater Cove Beach is between the Beach Club and the rocky outcropping at the south end of the cove in the community of Pebble Beach.

Temporal Representation:

Warnings and advisories for Stillwater Cove Beach were posted from 1999-2004. One closure occurred in 2002.

Environmental Conditions:

QAPP Information:

Monterey County Health Department, Division of Environmental Health QAPP

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 4609, Enterococcus	Region 3
Pacific Ocean at Stillwater Cove Beach

LOE ID:

375

Pollutant:

Enterococcus

LOE Subgroup:

Health Advisories

Matrix:

Not Specified

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

Data Reference:

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

Objective/Criterion Reference: