# Draft 2008 California 303(d)/305(b) Integrated Report

# Supporting Information

## Regional Board 3 - Central Coast Region

Water Body Name: | Monterey Bay South (Coastline)
Water Body ID: | CAX3095004220020311115800
Water Body Type: | Coastal & Bay Shoreline

DECISION ID | 4848
Pollutant: | Enterococcus
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
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under sections 3.3, of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. Three types of evidence based on different evaluation criteria are available in the administrative record to assess this pollutant. Based on section 3.3 an insufficient number of samples exceed the enterococcus water quality guidelines. 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 use of AB411 as evaluation criteria 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. Twenty of 578 samples exceeded the 35 MPN/100 ml criteria, 12 of 337 samples exceeded the 104MPN/100 ml and these do not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. Six other lines of evidence document health advisories posted along county beaches from 1999 to 2004. 5. Two additional LOE are assessed (since the 2006 assessment). LOE # 14131 shows that none of the 12 samples exceed the Evaluation Guideline (USEPA Ambient Water Quality Criteria for Bacteria, 1986) as it applies to the Water Contact Recreation beneficial use. 6. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
RWQCB Board Decision / Staff 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.
SWRCB Board Decision / Staff 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 Decision: |

Lines of Evidence (LOEs) for Decision ID 4848

LOE ID: | 3479
Pollutant: | Enterococcus
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 75
Number of Exceedances: | 1
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 107 bacteria samples from 2001 through 2004 at San Carlos Beach(CCRWQCB, 2004d). Thirty-day geo mean concentrations of Enterococcus were calculated. One of 75 geomeans were in exceedance of the criteria.
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | San Carlos Beach located between Coast Guard Pier and Monterey Plaza Hotel in the City of Monterey.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, San Carlos 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):
LOE ID: | 3478
Pollutant: | Enterococcus
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
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 (CCRWQCB, 2004d). Each advisory was posted for several days surrounding rain events in the county.
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | The rain advisories are issued for all beaches in Monterey County, including San Carlos 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):
LOE ID: | 3477
Pollutant: | Enterococcus
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
Data and Information Type: | Not Specified
Data Used to Assess Water Quality: | Monterey County posted 9 advisories for San Carlos Beach from 1999 to 2004. Advisories were for high bacteria (fecal and enterococcus) and total/fecal bacteria ratio exceedances (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | San Carlos Beach located between Coast Guard Pier and Monterey Plaza Hotel in the City of Monterey.
Temporal Representation: | Postings and closures are from 1999 to 2004.
Environmental Conditions: |
QAPP Information: | Monterey County Health Department, Division of Environmental Health QAPP
QAPP Information Reference(s):
LOE ID: | 3473
Pollutant: | Enterococcus
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
Data and Information Type: | Not Specified
Data Used to Assess Water Quality: | Monterey County posted 15 advisories and closures for Del Monte Beach from 1999 to 2004 (CCRWQCB, 2004d). There were 2 closures (2002 and 2004) for sewage spills and 13 advisories & warnings for high bacteria (total, fecal, and Enterococcus), total/fecal bacteria ratio exceedances, and log mean exceedances (1999-2004). Each advisory/closure was posted for several days.
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | Del Monte Beach located between Monterey commercial wharf and Ocean Forest Condominiums located at Camino Aguajito and Del Monte Avenue in the city of Monterey.
Temporal Representation: | Postings and closures are from 1999 to 2004.
Environmental Conditions: |
QAPP Information: | Monterey County Health Department, Division of Environmental Health QAPP
QAPP Information Reference(s):
LOE ID: | 14131
Pollutant: | Enterococcus
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 12
Number of Exceedances: | 0
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Central Coast Long Term Environmental Assessment Program (R3_CCLEAN) data for Monterey Bay to determine beneficial use support and results are as follows: 0 of 12 samples exceed the criterion for Enterococci.
Data Reference: | Final Data File used for assessment: CCLEAN (Central Coast Long Term Environmental Assessment Program data) Water Quality Data
Water Quality Objective/Criterion: | USEPA Ambient Water Quality Criteria for Bacteria -1986.
Objective/Criterion Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002
Evaluation Guideline: | Single sample maximum allowable density for Enterococci in marine waters is 104 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 Monterey Bay was collected at 2 monitoring sites [ NMB_CCLEAN - North Monterey Bay, SMB_CCLEAN - South Monterey Bay]
Temporal Representation: | Data was collected over the time period 2/20/2004-3/24/2006.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | EPA Approved QAPP.
QAPP Information Reference(s):
LOE ID: | 3482
Pollutant: | Enterococcus
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | The rain advisories are issued for all beaches in Monterey County, including Lovers Point 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):
LOE ID: | 3481
Pollutant: | Enterococcus
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County posted 23 advisories or closures for Lovers Point Beach. It was closed 11 times for sewage spills and all others (advisories and postings) were for high bacteria (fecal and enterococcus), total/fecal bacteria ratio exceedances, and log mean exceedances (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | Lovers Point Beach located at Lovers Point Park in the City of Pacific Grove.
Temporal Representation: | Postings and closures are from 1999 to 2004.
Environmental Conditions: |
QAPP Information: | Monterey County Health Department, Division of Environmental Health QAPP
QAPP Information Reference(s):
LOE ID: | 3480
Pollutant: | Enterococcus
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 112
Number of Exceedances: | 3
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 112 bacteria samples from 2001 through 2004 at San Carlos Beach. Three of 112 samples were in exceedance of the single sample criterion for Enterococcus (CDRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | San Carlos Beach located between Coast Guard Pier and Monterey Plaza Hotel in the City of Monterey.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Monterey Beach Hotel 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):
LOE ID: | 3483
Pollutant: | Enterococcus
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 77
Number of Exceedances: | 5
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 107 bacteria samples from 2001 through 2004 at Lovers Point Beach. Thirty-day mean concentrations of Enterococcus were calculated. Five of 77 means were in exceedance of the criteria (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | Lovers Point Beach located at Lovers Point Park in the City of Pacific Grove.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Lovers Point 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):
LOE ID: | 3484
Pollutant: | Enterococcus
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 112
Number of Exceedances: | 2
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 112 bacteria samples from 2001 through 2004 at Lovers Point Beach. Two of 112 samples were in exceedance of the single sample criterion for Enterococcus (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | Lovers Point Beach located at Lovers Point Park in the City of Pacific Grove
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Lovers Point 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):
LOE ID: | 3476
Pollutant: | Enterococcus
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 113
Number of Exceedances: | 7
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 113 bacteria samples from 2001 through 2004 at Del Monte Beach. Seven of 113 samples were in exceedance of the single sample criterion for Enterococcus (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | Del Monte Beach located between Monterey commercial wharf and Ocean Forest Condominiums located at Camino Aguajito and Del Monte Avenue in the city of Monterey.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Del Monte 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):
LOE ID: | 3475
Pollutant: | Enterococcus
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 77
Number of Exceedances: | 4
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 113 bacteria samples from 2001 through 2004 at Del Monte Beach. Thirty-day geomean concentrations of Enterococcus were calculated. Four of 77 geomeans were in exceedance of the criteria (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | Del Monte Beach located between Monterey commercial wharf and Ocean Forest Condominiums located at Camino Aguajito and Del Monte Avenue in the city of Monterey.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Del Monte 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):
LOE ID: | 3474
Pollutant: | Enterococcus
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
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(CCRWQCB, 2004d). Each advisory was posted for several days surrounding rain events in the county.
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | The rain advisories are issued for all beaches in Monterey County, including Del Monte 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):

DECISION ID | 15167
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
Weight of Evidence: | 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. None of the 13 samples exceed the water quality objectives for Water Contact or Non-Contact Recreation. 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. However, there are an insufficient number of samples to make a "use rating" decision. Central Coast Water Board staff require a minimum of 26 samples to make a "use rating" decision of Fully Supporting. 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 the 13 samples exceed the water quality objectives for Water Contact or Non-Contact Recreation and this does not exceed the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
RWQCB Board Decision / Staff 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.
SWRCB Board Decision / Staff Recommendation: |
USEPA Decision: |

Lines of Evidence (LOEs) for Decision ID 15167

LOE ID: | 13990
Pollutant: | Fecal Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 13
Number of Exceedances: | 0
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Central Coast Long Term Environmental Assessment Program (R3_CCLEAN) data for Monterey Bay to determine beneficial use support and results are as follows: 0 of 13 samples exceed the criterion for Coliform, Fecal.
Data Reference: | Final Data File used for assessment: CCLEAN (Central Coast Long Term Environmental Assessment Program data) Water Quality Data
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for water contact recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 200 MPN/100 ml, nor shall more than ten percent of total samples during any 30-day period exceed 400 MPN/100 ml.
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | Data for this line of evidence for Monterey Bay was collected at 2 monitoring sites [ NMB_CCLEAN - North Monterey Bay, SMB_CCLEAN - South Monterey Bay]
Temporal Representation: | Data was collected over the time period 2/20/2004-3/24/2006.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | EPA Approved QAPP.
QAPP Information Reference(s):
LOE ID: | 13991
Pollutant: | Fecal Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | None
Beneficial Use: | Non-Contact Recreation
Number of Samples: | 13
Number of Exceedances: | 0
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Central Coast Long Term Environmental Assessment Program (R3_CCLEAN) data for Monterey Bay to determine beneficial use support and results are as follows: 0 of 13 samples exceed the criterion for Coliform, Fecal.
Data Reference: | Final Data File used for assessment: CCLEAN (Central Coast Long Term Environmental Assessment Program data) Water Quality Data
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin objective for non-contact water recreation uses (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries, II.A.2.a) states the following: Fecal coliform concentration, based on a minimum of not less than five samples for any 30-day period, shall not exceed a log mean of 2000/100 ml, nor shall more than ten percent of samples collected during any 30-day period exceed 4000/100 ml.
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | Data for this line of evidence for Monterey Bay was collected at 2 monitoring sites [ NMB_CCLEAN - North Monterey Bay, SMB_CCLEAN - South Monterey Bay]
Temporal Representation: | Data was collected over the time period 2/20/2004-3/24/2006.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | EPA Approved QAPP.
QAPP Information Reference(s):

DECISION ID | 4841
Pollutant: | Metals
Final Listing Decision: | Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (TMDL required list)(2006)
Revision Status | Original
Reason for Delisting: | Flaws in original listing
Impairment from Pollutant or Pollution: | Pollutant
Weight of Evidence: | One line of evidence is available in the administrative record to assess this pollutant. The listing is faulty. The listing has been cited as 'metals' rather than listing for the pollutant responsible for the impairment. There is no guideline for metals and it cannot be determined if the pollutant is 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 in favor of removing this water segment-pollutant combination from the section 303(d) list. This conclusion is based on the staff findings that: 1. The listing was based on EDLs that do not comply with the requirements of section 6.1.3 of the Policy and a water quality guideline for metals is not available that complies with the requirements of section 6.1.3 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.
RWQCB Board Decision / Staff Recommendation: | No new data were assessed for 2008. The decision has not changed.
SWRCB Board Decision / Staff Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because it cannot be determined if applicable water quality standards for the pollutant are not exceeded.
USEPA Decision: |

Lines of Evidence (LOEs) for Decision ID 4841

LOE ID: | 3448
Pollutant: | Metals
LOE Subgroup: | Testimonial Evidence
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Wildlife Habitat
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
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 | 4842
Pollutant: | Pesticides
Final Listing Decision: | Delist from 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: | Delist from 303(d) list (TMDL required list)(2006)
Revision Status | Original
Reason for Delisting: | Flaws in original listing
Impairment from Pollutant or Pollution: | Pollutant
Weight of Evidence: | One line of evidence is available in the administrative record to assess this pollutant. The listing is faulty. The listing has been cited as "pesticides" rather than listing for the pollutant responsible for the impairment. There is no guideline for pesticides and it cannot be determined if the pollutant is 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 in favor of removing this water segment-pollutant combination from the section 303(d) list. This conclusion is based on the staff findings that: 1. The listing was based on EDLs that do not comply with the requirements of section 6.1.3 of the Policy and a water quality guideline for pesticides is not available that complies with the requirements of section 6.1.3 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Pursuant to section 4.11 of the Listing Policy, no additional data and information are available indicating that standards are met.
RWQCB Board Decision / Staff Recommendation: | No new data were assessed for 2008. The decision has not changed.
SWRCB Board Decision / Staff Recommendation: | After review of the available data and information, SWRCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because it cannot be determined if applicable water quality standards for the pollutant are not exceeded.
USEPA Decision: |

Lines of Evidence (LOEs) for Decision ID 4842

LOE ID: | 3449
Pollutant: | Pesticides
LOE Subgroup: | Testimonial Evidence
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Wildlife Habitat
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
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 | 4678
Pollutant: | Arsenic
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2006)
Revision Status | Original
Impairment from Pollutant or Pollution: | Pollutant
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under sections 3.4, and 3.4 of the Listing Policy. Under section 3.6 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. Based on section 3.4 the site does not show significant arsenic bioaccumulation 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 Guidance for Fish Advisories 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. None of six samples exceeded the USEPA guideline, samples exhibit exceedances for total arsenic but when further analyzed for levels of inorganic arsenic as recommended by OEHHA, these do not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
RWQCB Board Decision / Staff Recommendation: | No new data were assessed for 2008. The decision has not changed.
SWRCB Board Decision / Staff 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 Decision: |

Lines of Evidence (LOEs) for Decision ID 4678

LOE ID: | 3486
Pollutant: | Arsenic
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | Total
Beneficial Use: | Wildlife Habitat
Number of Samples: | 6
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: |
Objective/Criterion Reference:
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: | Placeholder reference 2006 303(d)
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: | QA Info Missing
QAPP Information Reference(s):
LOE ID: | 3485
Pollutant: | Arsenic
LOE Subgroup: | Testimonial Evidence
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Wildlife Habitat
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
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 | 4773
Pollutant: | Cadmium
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2006)
Revision Status | Original
Impairment from Pollutant or Pollution: | Pollutant
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. None of the 28 tissue samples exceed the water quality objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the 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 the 28 tissue samples exceeded the OEHHA screening value for total cadmium and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
RWQCB Board Decision / Staff Recommendation: | No new data were assessed for 2008. The decision has not changed.
SWRCB Board Decision / Staff 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 Decision: |

Lines of Evidence (LOEs) for Decision ID 4773

LOE ID: | 3487
Pollutant: | Cadmium
LOE Subgroup: | Testimonial Evidence
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Wildlife Habitat
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
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):
LOE ID: | 3488
Pollutant: | Cadmium
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | Total
Beneficial Use: | Wildlife Habitat
Number of Samples: | 28
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: |
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA Screening Guideline = 3.0 mg/kg (Brodberg and Pollock, 1999).
Guideline Reference: | Placeholder reference 2006 303(d)
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):

DECISION ID | 4857
Pollutant: | Chlordane
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2006)
Revision Status | Original
Impairment from Pollutant or Pollution: | Pollutant
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. One line of evidence is available in the administrative record to assess this pollutant. None of the samples exceed the water quality objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the 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 the ten samples exceeded the OEHHA screening values for fish consumption and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
RWQCB Board Decision / Staff Recommendation: | No new data were assessed for 2008. The decision has not changed.
SWRCB Board Decision / Staff 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 Decision: |

Lines of Evidence (LOEs) for Decision ID 4857

LOE ID: | 3494
Pollutant: | Chlordane
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | Total
Beneficial Use: | Wildlife Habitat
Number of Samples: | 10
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: |
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA screening values for fish consumption.
Guideline Reference: | Placeholder reference 2006 303(d)
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: | QA Info Missing
QAPP Information Reference(s):
LOE ID: | 3493
Pollutant: | Chlordane
LOE Subgroup: | Testimonial Evidence
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Wildlife Habitat
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
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 | 4840
Pollutant: | Chromium (total)
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 | Original
Impairment from Pollutant or Pollution: | Pollutant
Weight of Evidence: | This pollutant is being considered for listing under sections 2.1, 3.5 .of the Listing Policy. Under section 3.5 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. Based on section 3.5, chromium exceedences cannot be determined because there is no applicable water quality standards for this pollutant in tissue. Based on the readily available data and information, the weight of evidence indicates that there is not sufficient justification in favor of 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. A guideline for total chromium is not available that 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. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
RWQCB Board Decision / Staff Recommendation: | No new data were assessed for 2008. The decision has not changed.
SWRCB Board Decision / Staff 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 there are no applicable water quality standards for the pollutant.
USEPA Decision: |

Lines of Evidence (LOEs) for Decision ID 4840

LOE ID: | 3489
Pollutant: | Chromium (total)
LOE Subgroup: | Testimonial Evidence
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Wildlife Habitat
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
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):
LOE ID: | 3490
Pollutant: | Chromium (total)
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | Total
Beneficial Use: | Wildlife Habitat
Number of Samples: | 6
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: |
Objective/Criterion Reference:
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: | Placeholder reference 2006 303(d)
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: | QA Info Missing
QAPP Information Reference(s):

DECISION ID | 4778
Pollutant: | DDT (Dichlorodiphenyltrichloroethane)
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 | Original
Impairment from Pollutant or Pollution: | Pollutant
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.4of the Listing Policy. Under section 3.4a single line of evidence is necessary to assess listing status. Two lines of evidence is available in the administrative record to assess this pollutant. None of the samples exceed the water quality objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the 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 the ten samples exceeded the OEHHA screening values for fish consumption and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
RWQCB Board Decision / Staff Recommendation: | No new data were assessed for 2008. The decision has not changed.
SWRCB Board Decision / Staff 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 Decision: |

Lines of Evidence (LOEs) for Decision ID 4778

LOE ID: | 3496
Pollutant: | DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | Total
Beneficial Use: | Wildlife Habitat
Number of Samples: | 10
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: |
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA screening values for fish consumption.
Guideline Reference: | Placeholder reference 2006 303(d)
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):
LOE ID: | 3495
Pollutant: | DDT (Dichlorodiphenyltrichloroethane)
LOE Subgroup: | Testimonial Evidence
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Wildlife Habitat
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
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 | 4844
Pollutant: | Dieldrin
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2006)
Revision Status | Original
Impairment from Pollutant or Pollution: | Pollutant
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.4 of the Listing Policy. Under section 3.4 a single line of evidence is necessary to assess listing status. Two lines of evidence is available in the administrative record to assess this pollutant. None of the samples exceed the water quality objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the 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 the ten samples exceeded the OEHHA screening values for fish consumption and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
RWQCB Board Decision / Staff Recommendation: | No new data were assessed for 2008. The decision has not changed.
SWRCB Board Decision / Staff 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 Decision: |

Lines of Evidence (LOEs) for Decision ID 4844

LOE ID: | 3497
Pollutant: | Dieldrin
LOE Subgroup: | Testimonial Evidence
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Wildlife Habitat
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
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):
LOE ID: | 3498
Pollutant: | Dieldrin
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | Total
Beneficial Use: | Wildlife Habitat
Number of Samples: | 10
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: |
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA screening values for fish consumption.
Guideline Reference: | Placeholder reference 2006 303(d)
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 | 4860
Pollutant: | Endosulfan
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2006)
Revision Status | Original
Impairment from Pollutant or Pollution: | Pollutant
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.1 of the Listing Policy. Under section 3.1 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. None of the samples exceed the water quality objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the 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 the ten samples exceeded the OEHHA screening values for fish consumption; six were non-detects and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
RWQCB Board Decision / Staff Recommendation: | No new data were assessed for 2008. The decision has not changed.
SWRCB Board Decision / Staff 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 Decision: |

Lines of Evidence (LOEs) for Decision ID 4860

LOE ID: | 3500
Pollutant: | Endosulfan
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | Total
Beneficial Use: | Wildlife Habitat
Number of Samples: | 10
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: |
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA screening values for fish consumption.
Guideline Reference: | Placeholder reference 2006 303(d)
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):
LOE ID: | 3499
Pollutant: | Endosulfan
LOE Subgroup: | Testimonial Evidence
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Wildlife Habitat
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
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 | 4861
Pollutant: | Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2006)
Revision Status | Original
Impairment from Pollutant or Pollution: | Pollutant
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.4 of the Listing Policy. Under section 3.4 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. None of the samples exceed the water quality objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the 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 the ten samples exceeded the OEHHA screening values for fish consumption; eight were non-detects and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
RWQCB Board Decision / Staff Recommendation: | No new data were assessed for 2008. The decision has not changed.
SWRCB Board Decision / Staff 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 Decision: |

Lines of Evidence (LOEs) for Decision ID 4861

LOE ID: | 3501
Pollutant: | Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: | Testimonial Evidence
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Wildlife Habitat
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
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):
LOE ID: | 3502
Pollutant: | Lindane/gamma Hexachlorocyclohexane (gamma-HCH)
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | Total
Beneficial Use: | Wildlife Habitat
Number of Samples: | 10
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: |
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA screening values for fish consumption.
Guideline Reference: | Placeholder reference 2006 303(d)
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 | 4856
Pollutant: | Selenium
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision: | Do Not List on 303(d) list (TMDL required list)(2006)
Revision Status | Original
Impairment from Pollutant or Pollution: | Pollutant
Weight of Evidence: | This pollutant is being considered for placement on the section 303(d) list under section 3.4 of the Listing Policy. Under section 3.4 a single line of evidence is necessary to assess listing status. Two lines of evidence is available in the administrative record to assess this pollutant. None of the samples exceed the water quality objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the 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 the six samples exceeded the OEHHA and USEPA screening values for fish consumption and this does not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 3. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
RWQCB Board Decision / Staff Recommendation: | No new data were assessed for 2008. The decision has not changed.
SWRCB Board Decision / Staff 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 Decision: |

Lines of Evidence (LOEs) for Decision ID 4856

LOE ID: | 3492
Pollutant: | Selenium
LOE Subgroup: | Pollutant-Tissue
Matrix: | Tissue
Fraction: | Total
Beneficial Use: | Wildlife Habitat
Number of Samples: | 6
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: |
Objective/Criterion Reference:
Evaluation Guideline: | OEHHA and USEPA screening values for fish consumption.
Guideline Reference: | Placeholder reference 2006 303(d)
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: | QA Info Missing
QAPP Information Reference(s):
LOE ID: | 3491
Pollutant: | Selenium
LOE Subgroup: | Testimonial Evidence
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Wildlife Habitat
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Request to delist - Delisting report refers to OEHHA and USEPA tissue guidance values.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
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 | 4843
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 | Original
Impairment from Pollutant or Pollution: | Pollutant
Weight of Evidence: | 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. Twenty- four lines of evidence are available in the administrative record to access this pollutant. Nine lines of evidence document Health Advisory postings along the Monterey beaches at various intervals during 1999 and 2004. Five lines of evidence show 53 of 320 samples exceeded the median total coliform concentration of 70 MPN/100ml to protect shell fish harvesting, five lines of evidence showed none of 302 samples exceeding the AB--411 30-day log mean of 1,000 MPN/100 ml concentration for the protection of public beaches and water contact sports areas, and five lines of evidence showed none of 458 samples exceeding the AB-411 single maximum criterion concentration for total coliform. 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 guideline used for median total coliform concentration 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. Fifty-three of 320 samples exceeded the median total coliform concentration, and these do not exceed the allowable frequency listed in Table 3.1 of the Listing Policy. 5. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met.
RWQCB Board Decision / Staff 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.
SWRCB Board Decision / Staff 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 Decision: |

Lines of Evidence (LOEs) for Decision ID 4843

LOE ID: | 3450
Pollutant: | Total Coliform
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
Data and Information Type: | Not Specified
Data Used to Assess Water Quality: | Monterey County posted advisories for Monterey Beach Hotel on 2 occasions (in 2001 and 2004). Each advisory was posted for several days (CCRWQCB, 2004d). The posting in 2001 was for high fecal coliform and the posting in 2004 was for high enterococcus.
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | Monterey Beach Hotel - Highway 218 at Monterey Bay adjacent to the Monterey Beach Hotel.
Temporal Representation: | Advisories posted in 2001 and 2004.
Environmental Conditions: |
QAPP Information: | Monterey County Health Department, Division of Environmental Health QAPP.
QAPP Information Reference(s):
LOE ID: | 3451
Pollutant: | Total Coliform
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | The rain advisories are issued for all beaches in Monterey County, including Monterey Beach Hotel.
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):
LOE ID: | 3452
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 75
Number of Exceedances: | 6
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 107 bacteria samples from 2001 through 2004 at Monterey Beach Hotel (CCRWQCB, 2004d). Thirty-day median concentrations of total coliform were calculated. Six of 75 medians were in exceedance of the criteria.
Data Reference: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Central Coast RWQCB Basin Plan: At all areas where shellfish may be harvested for human consumption, the median total coliform concentration throughout the water column for any 30-day period shall not exceed 70/100 ml, nor shall more than ten percent of the samples collected during any 30-day period exceed 230/100 ml for a five-tube decimal dilution test or 330/100 ml when a three-tube decimal dilution test is used.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | Monterey Beach Hotel - Highway 218 at Monterey Bay adjacent to the Monterey Beach Hotel.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Monterey Beach Hotel 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):
LOE ID: | 3453
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 107
Number of Exceedances: | 0
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 107 bacteria samples from 2001 through 2004 at Monterey Beach Hotel (CCRWQCB, 2004d). None of the 107 samples were in exceedance of the single sample criterion for total coliform.
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | Monterey Beach Hotel - Highway 218 at Monterey Bay adjacent to the Monterey Beach Hotel.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Monterey Beach Hotel 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):
LOE ID: | 3455
Pollutant: | Total Coliform
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
Data and Information Type: | Not Specified
Data Used to Assess Water Quality: | Monterey County posted 15 advisories and closures for Del Monte Beach from 1999 to 2004. There were 2 closures (2002 and 2004) for sewage spills and 13 advisories & warnings for high bacteria (total, fecal, and Enterococcus), total/fecal bacteria ratio exceedances, and log mean exceedances (1999-2004). Each advisory/closure was posted for several days (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | Del Monte Beach located between Monterey commercial wharf and Ocean Forest Condominiums located at Camino Aguajito and Del Monte Avenue in the city of Monterey.
Temporal Representation: | Postings and closures are from 1999 to 2004.
Environmental Conditions: |
QAPP Information: | Monterey County Health Department, Division of Environmental Health QAPP.
QAPP Information Reference(s):
LOE ID: | 14008
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | None
Beneficial Use: | Shellfish Harvesting
Number of Samples: | 12
Number of Exceedances: | 0
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed Central Coast Long Term Environmental Assessment Program (R3_CCLEAN) data for Monterey Bay to determine beneficial use support and results are as follows: 0 of 12 samples exceed the criterion for Coliform, Total.
Data Reference: | Final Data File used for assessment: CCLEAN (Central Coast Long Term Environmental Assessment Program data) Water Quality Data
Water Quality Objective/Criterion: | The Water Quality Control Plan, Central Coast Basin Shellfish Harvesting objective (Section II.A.2. Objectives for All Inland Surface Waters, Enclosed Bays, and Estuaries (page III-12)) states the following: At all areas where shellfish may be harvested for human consumption, the median total coliform concentration throughout the water column for any 30-day period shall not exceed 70 MPN/100mL, not shall more than ten percent of the samples collected during any 30-day period exceed 230 MPN/100mL for a five tube decimal dilution test.
Objective/Criterion Reference: | Water Quality Control Plan Central Coast Region (R3) Basin Plan
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | Data for this line of evidence for Monterey Bay was collected at 2 monitoring sites [ NMB_CCLEAN - North Monterey Bay, SMB_CCLEAN - South Monterey Bay]
Temporal Representation: | Data was collected over the time period 2/20/2004-3/24/2006.
Environmental Conditions: | Staff is not aware of any special conditions that might effect interpretation of the data.
QAPP Information: | EPA Approved QAPP.
QAPP Information Reference(s):
LOE ID: | 3459
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 77
Number of Exceedances: | 0
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 107 bacteria samples from 2001 through 2004 at Del Monte Beach. Thirty-day mean concentrations of total coliform were calculated. None of the 77 means were in exceedance of the criteria (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | Del Monte Beach located between Monterey commercial wharf and Ocean Forest Condominiums located at Camino Aguajito and Del Monte Avenue in the city of Monterey.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Del Monte 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):
LOE ID: | 3460
Pollutant: | Total Coliform
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
Data and Information Type: | Not Specified
Data Used to Assess Water Quality: | Monterey County posted 9 advisories for San Carlos Beach from 1999 to 2004. Advisories were for high bacteria (fecal and enterococcus) and total/fecal bacteria ratio exceedances (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | San Carlos Beach located between Coast Guard Pier and Monterey Plaza Hotel in the City of Monterey.
Temporal Representation: | Postings and closures are from 1999 to 2004.
Environmental Conditions: |
QAPP Information: | Monterey County Health Department, Division of Environmental Health QAPP
QAPP Information Reference(s):
LOE ID: | 3456
Pollutant: | Total Coliform
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | The rain advisories are issued for all beaches in Monterey County, including Del Monte 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):
LOE ID: | 3457
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 79
Number of Exceedances: | 11
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 113 bacteria samples from 2001 through 2004 at Del Monte Beach. Thirty-day median concentrations of total coliform were calculated. Eleven of 79 medians were in exceedance of the criteria (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Central Coast RWQCB Basin Plan: At all areas where shellfish may be harvested for human consumption, the median total coliform concentration throughout the water column for any 30-day period shall not exceed 70/100 ml, nor shall more than ten percent of the samples collected during any 30-day period exceed 230/100 ml for a five-tube decimal dilution test or 330/100 ml when a three-tube decimal dilution test is used.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | Del Monte Beach located between Monterey commercial wharf and Ocean Forest Condominiums located at Camino Aguajito and Del Monte Avenue in the city of Monterey.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Del Monte 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):
LOE ID: | 3458
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 113
Number of Exceedances: | 1
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 113 bacteria samples from 2001 through 2004 at Del Monte Beach. One of 113 samples were in exceedance of the single sample criterion for total coliform (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | Del Monte Beach located between Monterey commercial wharf and Ocean Forest Condominiums located at Camino Aguajito and Del Monte Avenue in the city of Monterey.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Del Monte 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):
LOE ID: | 3461
Pollutant: | Total Coliform
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | The rain advisories are issued for all beaches in Monterey County, including San Carlos 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):
LOE ID: | 3462
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 75
Number of Exceedances: | 15
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 112 bacteria samples from 2001 through 2004 at San Carlos Beach. 30-day median concentrations of total coliform were calculated. Fifteen of 75 medians were in exceedance of the criteria (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Central Coast RWQCB Basin Plan: At all areas where shellfish may be harvested for human consumption, the median total coliform concentration throughout the water column for any 30-day period shall not exceed 70/100 ml, nor shall more than ten percent of the samples collected during any 30-day period exceed 230/100 ml for a five-tube decimal dilution test or 330/100 ml when a three-tube decimal dilution test is used.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | San Carlos Beach located between Coast Guard Pier and Monterey Plaza Hotel in the City of Monterey.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, San Carlos 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):
LOE ID: | 3463
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 75
Number of Exceedances: | 0
Data and Information Type: | Not Specified
Data Used to Assess Water Quality: | Monterey County collected 107 bacteria samples from 2001 through 2004 at San Carlos Beach. 30-day mean concentrations of total coliform were calculated. None of the 75 means were in exceedance of the criteria (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | San Carlos Beach located between Coast Guard Pier and Monterey Plaza Hotel in the City of Monterey.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, San Carlos 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):
LOE ID: | 3464
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 112
Number of Exceedances: | 0
Data and Information Type: | Not Specified
Data Used to Assess Water Quality: | Monterey County collected 112 bacteria samples from 2001 through 2004 at San Carlos Beach. None of the 112 samples were in exceedance of the single sample criterion for total coliform (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | San Carlos Beach located between Coast Guard Pier and Monterey Plaza Hotel in the City of Monterey.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Monterey Beach Hotel 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):
LOE ID: | 3468
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 77
Number of Exceedances: | 0
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 107 bacteria samples from 2001 through 2004 at Lovers Point Beach. Thirty-day mean concentrations of total coliform were calculated. None of the 77 means were in exceedance of the criteria (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | Lovers Point Beach located at Lovers Point Park in the City of Pacific Grove.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Lovers Point 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):
LOE ID: | 3469
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 112
Number of Exceedances: | 0
Data and Information Type: | Not Specified
Data Used to Assess Water Quality: | Monterey County collected 112 bacteria samples from 2001 through 2004 at Lovers Point Beach. None of the 112 samples were in exceedance of the single sample criterion for total coliform (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | Lovers Point Beach located at Lovers Point Park in the City of Pacific Grove
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Lovers Point 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):
LOE ID: | 3470
Pollutant: | Total Coliform
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | The rain advisories are issued for all beaches in Monterey County, including Seaside State 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):
LOE ID: | 3471
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 14
Number of Exceedances: | 4
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collects monthly bacteria samples at Seaside State Beach. Although because samples are monthly there is only 1 sample in each 30-day period, there is no limit as to how many samples must be included in the 30-day median total coliform concentration. A ten percent total coliform concentration could not be calculated either, so this criterion was used as a single (monthly) sample comparison as well. Four of 14 samples exceeded the criteria of 70/100 ml and 2 of 14 samples exceeded the criteria of 230/100 ml (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Central Coast RWQCB Basin Plan: At all areas where shellfish may be harvested for human consumption, the median total coliform concentration throughout the water column for any 30-day period shall not exceed 70/100 ml, nor shall more than ten percent of the samples collected during any 30-day period exceed 230/100 ml for a five-tube decimal dilution test or 330/100 ml when a three-tube decimal dilution test is used.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | Seaside State Beach located west of Seaside City Industrial Wastewater Treatment plant, City of Seaside.
Temporal Representation: | Samples were collected monthly from 2/4/2003 through 6/1/2004.
Environmental Conditions: |
QAPP Information: | Monterey County Health Department, Division of Environmental Health QAPP.
QAPP Information Reference(s):
LOE ID: | 3472
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 14
Number of Exceedances: | 0
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected monthly samples at Seaside State Beach in 2003 and 2004. None of the 14 single samples were in exceedance of the criterion (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | Seaside State Beach located west of Seaside City Industrial Wastewater Treatment plant, City of Seaside.
Temporal Representation: | Samples were collected monthly from 2/4/2003 through 6/1/2004.
Environmental Conditions: |
QAPP Information: | Monterey County Health Department, Division of Environmental Health QAPP.
QAPP Information Reference(s):
LOE ID: | 3466
Pollutant: | Total Coliform
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
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: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | The rain advisories are issued for all beaches in Monterey County, including Lovers Point 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):
LOE ID: | 3467
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 77
Number of Exceedances: | 17
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 112 bacteria samples from 2001 through 2004 at Lovers Point Beach. Thirty-day median concentrations of total coliform were calculated. Seventeen of the 77 medians were in exceedance of the criteria (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
Water Quality Objective/Criterion: | Central Coast RWQCB Basin Plan: At all areas where shellfish may be harvested for human consumption, the median total coliform concentration throughout the water column for any 30-day period shall not exceed 70/100 ml, nor shall more than ten percent of the samples collected during any 30-day period exceed 230/100 ml for a five-tube decimal dilution test or 330/100 ml when a three-tube decimal dilution test is used.
Objective/Criterion Reference: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | Lovers Point Beach located at Lovers Point Park in the City of Pacific Grove.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Lovers Point 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):
LOE ID: | 3465
Pollutant: | Total Coliform
LOE Subgroup: | Health Advisories
Matrix: | Not Specified
Fraction: | None
Beneficial Use: | Water Contact Recreation
Number of Samples: | 0
Number of Exceedances: | 0
Data and Information Type: | Not Specified
Data Used to Assess Water Quality: | Monterey County posted 23 advisories or closures for Lovers Point Beach. It was closed 11 times for sewage spills and all others (advisories and postings) were for high bacteria (fecal and enterococcus), total/fecal bacteria ratio exceedances, and log mean exceedances (CCRWQCB, 2004d).
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Evaluation Guideline: |
Guideline Reference:
Spatial Representation: | Lovers Point Beach located at Lovers Point Park in the City of Pacific Grove.
Temporal Representation: | Postings and closures are from 1999 to 2004.
Environmental Conditions: |
QAPP Information: | Monterey County Health Department, Division of Environmental Health QAPP
QAPP Information Reference(s):
LOE ID: | 3454
Pollutant: | Total Coliform
LOE Subgroup: | Pollutant-Water
Matrix: | Water
Fraction: | Total
Beneficial Use: | Water Contact Recreation
Number of Samples: | 73
Number of Exceedances: | 0
Data and Information Type: | PATHOGEN MONITORING
Data Used to Assess Water Quality: | Monterey County collected 107 bacteria samples from 2001 through 2004 at Monterey Beach Hotel (CCRWQCB, 2004d). Thirty-day mean concentrations of total coliform were calculated. None of the 73 means were in exceedance of the criteria.
Data Reference: | Placeholder reference 2006 303(d)
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: | Placeholder reference 2006 303(d)
Spatial Representation: | Monterey Beach Hotel - Highway 218 at Monterey Bay adjacent to the Monterey Beach Hotel.
Temporal Representation: | Samples were collected from 4/2/2001 through 6/7/2004. As an AB411 beach, Monterey Beach Hotel 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):