Water Body Name: | Pacific Ocean at Rio Del Mar (Santa Cruz County), Aptos Creek mouth |
Water Body ID: | CAX3041302320021002224137 |
Water Body Type: | Coastal & Bay Shoreline |
DECISION ID |
6246 |
Region 3 |
Pacific Ocean at Rio Del Mar (Santa Cruz County), Aptos Creek mouth |
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Pollutant: | Indicator Bacteria |
Final Listing Decision: | Delist from 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | List on 303(d) list (TMDL required list)(2006) |
Revision Status | Revised |
Reason for Delisting: | Change from general pollutant to specific pollutant listing (e.g. metals to copper) |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | USEPA placed this water body-pollutant combination on the section 303(d) list using the data and information contained in the line of evidence. This listing was based on calculation of a rolling geomean for data collected between April 2000 and October 2005.
It is not possible, in a general listing, to determine which specific pollutant is causing or contributing to a water quality impacts. There is sufficient justification for removing the general listings for Indicator Bacteria from the 303(d) list and replace this general listing with decisions for each of the specific pollutants that apply. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should be removed from the section 303(d) list because it is not possible, in a general listing, to determine which specific pollutant is causing or contributing to a water quality impacts. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
USEPA Action (if applicable): | |
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LOE ID: | 3447 | ||||
Pollutant: | Indicator Bacteria | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | Total | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 218 | ||||
Number of Exceedances: | 64 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Available data indicate sufficient exceedances of bacterial indicator objectives. There were 44 out of 283 samples exceeding the single sample maximum for enterococci, and 64 out of 218 exceedances of the geomean for enterococci (USEPA, 2007). | ||||
Data Reference: | Placeholder reference 2006 303(d) | ||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | Title 17 C.C.R. Section 7958 states: Based on a single sample, the density of bacteria in water from each sampling station at a public beach or public water contact sports area shall not exceed:
(A) 1,000 total coliform bacteria per 100 milliliters, if the ratio of fecal/total coliform bacteria exceeds 0.1; or (B) 10,000 total coliform bacteria per 100 milliliters; or (C) 400 fecal coliform bacteria per 100 milliliters; or (D) 104 enterococcus bacteria per 100 milliliters. Based on the mean of the logarithms of the results of at least five weekly samples during any 30-day sampling period, the density of bacteria in water from any sampling station at a public beach or public water contact sports area, shall not exceed: (A) 1,000 total coliform bacteria per 100 milliliters; or (B) 200 fecal coliform bacteria per 100 milliliters; or (C) 35 enterococcus bacteria per 100 milliliters. (DHS, 1999) |
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Objective/Criterion Reference: | Placeholder reference 2006 303(d) | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Station ID# SCC220 | ||||
Temporal Representation: | 04/03/2000-10/25/2005 | ||||
Environmental Conditions: | |||||
QAPP Information: | Data record: 2000-2005, Santa Cruz County Health Dept. | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
15603 |
Region 3 |
Pacific Ocean at Rio Del Mar (Santa Cruz County), Aptos Creek mouth |
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Pollutant: | Enterococcus |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | Regional Board Conclusion:
This pollutant is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. When compared to the Ocean Plan Objectives for Water Contact Recreation, 2 of 110 samples exceeded the single sample maximum Objective, 3 of 26 geomean assessments exceeded the geomean Objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. Two of 110 samples exceeded the single sample maximum Objective, 3 of 26 geomean assessments exceeded the geomean Objective. Neither of these exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. _ State Board Review and Conclusion: Based on comments received from U.S. EPA (comment letter # 60), on the April 19, 2010 State Water Board staff report for the 2010 Integrated Report, State Water Board staff added 2 LOEs (31447 and 31448) assessing the AB411 (dry weather) data for this water body. Staff reviewed the bacteria data for this water body in the Central Coast Region described in the comment letter. Staff recommendation has not changed for this water body - pollutant combination based on evaluation of the dry weather data that was not included in the original Central Coast Region assessment. On August 4, 2010 the State Water Board approved the staff listing recommendation to not place this water body on the 303(d) list for enterococcus. The final language for the recommendation is: This pollutant is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. When compared to the Ocean Plan Objectives for Water Contact Recreation, 2 of 110 samples exceeded the single sample maximum Objective, 3 of 26 geomean assessments exceeded the geomean Objective. This water body segment is identified as an AB411 beach and data collected during the time frame of April 1st to October 31st (dry weather) is assessed using a four percent exceedance percentage (section 3.3 of Listing Policy). There are two additional lines of evidence for dry weather single sample and geometric mean calculations. Three of 66 samples exceeded the recreational use single sample criteria and one of 15 geometric mean calculations exceeded the geometric mean criteria. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification 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. Two of 110 samples exceeded the single sample maximum Objective, 3 of 26 geomean assessments exceeded the geomean Objective. Neither of these exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Three of 66 samples exceeded the recreational use single sample criteria and one of 15 geometric mean calculations exceeded the geometric mean criteria. Neither of these exceeds the allowable frequency listed in Table 3.2 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. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | _
State Board Review and Conclusion: Based on comments received from U.S. EPA (comment letter # 60), on the April 19, 2010 State Water Board staff report for the 2010 Integrated Report, State Water Board staff added 2 LOEs (31447 and 31448) assessing the AB411 (dry weather) data for this water body. Staff reviewed the bacteria data for this water body in the Central Coast Region described in the comment letter. Staff recommendation has not changed for this water body - pollutant combination based on evaluation of the dry weather data that was not included in the original Central Coast Region assessment. On August 4, 2010 the State Water Board approved the staff listing recommendation to not place this water body on the 303(d) list for enterococcus. The final language for the recommendation is: This pollutant is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. Two lines of evidence are available in the administrative record to assess this pollutant. When compared to the Ocean Plan Objectives for Water Contact Recreation, 2 of 110 samples exceeded the single sample maximum Objective, 3 of 26 geomean assessments exceeded the geomean Objective. This water body segment is identified as an AB411 beach and data collected during the time frame of April 1st to October 31st (dry weather) is assessed using a four percent exceedance percentage (section 3.3 of Listing Policy). There are two additional lines of evidence for dry weather single sample and geometric mean calculations. Three of 66 samples exceeded the recreational use single sample criteria and one of 15 geometric mean calculations exceeded the geometric mean criteria. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification 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. Two of 110 samples exceeded the single sample maximum Objective, 3 of 26 geomean assessments exceeded the geomean Objective. Neither of these exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Three of 66 samples exceeded the recreational use single sample criteria and one of 15 geometric mean calculations exceeded the geometric mean criteria. Neither of these exceeds the allowable frequency listed in Table 3.2 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. |
State Board Decision Recommendation: | After review of this Regional Board decision, the State Water Board recommends that this water body - pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
USEPA Action (if applicable): | |
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LOE ID: | 31448 | ||||
Pollutant: | Enterococcus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 15 | ||||
Number of Exceedances: | 1 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Data was collected from April 2004 through October 2006. A
total of 66 dry month (April through October) single samples were collected with 15 dry month geomeans calculated. One of the 14 geomeans exceeded the geomean water quality objective. |
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Data Reference: | AB 411 Data for 2004 | ||||
AB 411 Data for 2005 | |||||
AB 411 Data for 2006 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | AB 411-California Ocean Plan (SWRCB 2005) states that the geometric mean for Enterococcus shall not exceed 35 MPN/100 mL. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Rio Del Mar (Santa Cruz County) was collected at one AB411 monitoring site (Aptos Creek Mouth) | ||||
Temporal Representation: | Data was collected over the time period 2004 - 2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year. | ||||
Environmental Conditions: | |||||
QAPP Information: | QA information not available | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 31449 | ||||
Pollutant: | Enterococcus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 66 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Data was collected from April 2004 through October 2006. A total of 66 dry month (April through October) single samples were collected with 3 samples exceeding the water quality objective. | ||||
Data Reference: | AB 411 Data for 2004 | ||||
AB 411 Data for 2005 | |||||
AB 411 Data for 2006 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | AB 411-California Ocean Plan (SWRCB 2005) states that the single sample maximum for Enterococcus shall not exceed 104 MPN/100 mL. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Rio Del Mar (Santa Cruz County) was collected at one AB411 monitoring site (Aptos Creek Mouth) | ||||
Temporal Representation: | Data was collected over the time period 2004 - 2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year. | ||||
Environmental Conditions: | |||||
QAPP Information: | QA information not available | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 20134 | ||||
Pollutant: | Enterococcus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 110 | ||||
Number of Exceedances: | 2 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed data for Pacific Ocean at Rio Del Mar (Santa Cruz County) to determine beneficial use support and results are as follows: 2 of 110 samples exceed the criterion for Enterococci. | ||||
Data Reference: | AB 411 Data for 2004 | ||||
AB 411 Data for 2005 | |||||
AB 411 Data for 2006 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | California Ocean Plan (SWRCB 2005) states that the single sample maximum for Enterococcus shall not exceed 104 MPN/100 mL. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Rio Del Mar (Santa Cruz County) was collected at one AB411 monitoring site (Aptos Creek Mouth) | ||||
Temporal Representation: | Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year. | ||||
Environmental Conditions: | |||||
QAPP Information: | QA information not available | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 20133 | ||||
Pollutant: | Enterococcus | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 26 | ||||
Number of Exceedances: | 3 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed data for Pacific Ocean at Rio Del Mar (Santa Cruz County) to determine beneficial use support and results are as follows: 3 of 26 samples exceed the criterion for Enterococci. | ||||
Data Reference: | AB 411 Data for 2004 | ||||
AB 411 Data for 2005 | |||||
AB 411 Data for 2006 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | California Ocean Plan (SWRCB 2005) states that the geometric mean for Enterococcus shall not exceed 35 MPN/100 mL. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Rio Del Mar (Santa Cruz County) was collected at one AB411 monitoring site (Aptos Creek Mouth) | ||||
Temporal Representation: | Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year. | ||||
Environmental Conditions: | |||||
QAPP Information: | QA information not available | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
15604 |
Region 3 |
Pacific Ocean at Rio Del Mar (Santa Cruz County), Aptos Creek mouth |
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Pollutant: | Escherichia coli (E. coli) |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. When compared to the Ocean Plan Objectives for Water Contact Recreation, none of 5 samples exceeded the single sample maximum Objective, none of 2 geomean assessments exceeded the geomean Objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. None of 5 samples exceeded the single sample maximum Objective, none of 2 geomean assessments exceeded the geomean Objective. Neither of these exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
USEPA Action (if applicable): | |
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LOE ID: | 20135 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 2 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed data for Pacific Ocean at Rio Del Mar (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 2 samples exceed the criterion for Escherichia coli. | ||||
Data Reference: | AB 411 Data for 2004 | ||||
AB 411 Data for 2005 | |||||
AB 411 Data for 2006 | |||||
SWAMP Data: | Non-SWAMP | ||||
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: | Steady State Geometric Mean Indicator Density is 126 MPN/100mL (as stated in Table 4, Page 15). | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Rio Del Mar (Santa Cruz County) was collected at one AB411 monitoring site (Aptos Creek Mouth) | ||||
Temporal Representation: | Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year. | ||||
Environmental Conditions: | |||||
QAPP Information: | QA information not available | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 20136 | ||||
Pollutant: | Escherichia coli (E. coli) | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 5 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed data for Pacific Ocean at Rio Del Mar (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 5 samples exceed the criterion for Escherichia coli. | ||||
Data Reference: | AB 411 Data for 2004 | ||||
AB 411 Data for 2005 | |||||
AB 411 Data for 2006 | |||||
SWAMP Data: | Non-SWAMP | ||||
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 E. coli in freshwater is 235 MPN/100mL (as stated in Table 4, page 15) | ||||
Guideline Reference: | Ambient Water Quality Criteria for Bacteria - 1986. EPA440/5-84-002 | ||||
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Rio Del Mar (Santa Cruz County) was collected at one AB411 monitoring site (Aptos Creek Mouth) | ||||
Temporal Representation: | Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year. | ||||
Environmental Conditions: | |||||
QAPP Information: | QA information not available | ||||
QAPP Information Reference(s): | |||||
DECISION ID |
15605 |
Region 3 |
Pacific Ocean at Rio Del Mar (Santa Cruz County), Aptos Creek mouth |
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Pollutant: | Fecal Coliform |
Final Listing Decision: | Do Not List on 303(d) list (TMDL required list) |
Last Listing Cycle's Final Listing Decision: | New Decision |
Revision Status | Revised |
Impairment from Pollutant or Pollution: | Pollutant |
Regional Board Conclusion: | This pollutant is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status.
Two lines of evidence are available in the administrative record to assess this pollutant. When compared to the Ocean Plan Objectives for Water Contact Recreation, none of 93 samples exceeded the single sample maximum Objective, none of 24 geomean assessments exceeded the geomean Objective. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification against placing this water segment-pollutant combination on the section 303(d) list in the Water Quality Limited Segments category. This conclusion is based on the staff findings that: 1. The data used satisfies the data quality requirements of section 6.1.4 of the Policy. 2. The data used satisfies the data quantity requirements of section 6.1.5 of the Policy. 3. None of 93 samples exceeded the single sample maximum Objective, none of 24 geomean assessments exceeded the geomean Objective. Neither of these exceeds the allowable frequency listed in Table 3.2 of the Listing Policy. 4. Pursuant to section 3.11 of the Listing Policy, no additional data and information are available indicating that standards are not met. |
Regional Board Decision Recommendation: | After review of the available data and information, RWQCB staff concludes that the water body-pollutant combination should not be placed on the section 303(d) list because applicable water quality standards are not being exceeded. |
State Board Review of Regional Board Conclusion and Recommendation: | |
State Board Decision Recommendation: | After review of this Regional Board decision, SWRCB staff recommend the decision be approved by the State Board. |
USEPA Action (if applicable): | |
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LOE ID: | 20131 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 24 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed data for Pacific Ocean at Rio Del Mar (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 24 samples exceed the criterion for Coliform, Fecal. | ||||
Data Reference: | AB 411 Data for 2004 | ||||
AB 411 Data for 2005 | |||||
AB 411 Data for 2006 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | California Ocean Plan (SWRCB 2005) states that the 30-day geometric mean for fecal coliform shall not exceed 200 MPN/100 mL. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Rio Del Mar (Santa Cruz County) was collected at one AB411 monitoring site (Aptos Creek Mouth) | ||||
Temporal Representation: | Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year. | ||||
Environmental Conditions: | |||||
QAPP Information: | QA information not available | ||||
QAPP Information Reference(s): | |||||
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LOE ID: | 20132 | ||||
Pollutant: | Fecal Coliform | ||||
LOE Subgroup: | Pollutant-Water | ||||
Matrix: | Water | ||||
Fraction: | None | ||||
Beneficial Use: | Water Contact Recreation | ||||
Number of Samples: | 93 | ||||
Number of Exceedances: | 0 | ||||
Data and Information Type: | PATHOGEN MONITORING | ||||
Data Used to Assess Water Quality: | Central Coast Regional Board Staff assessed data for Pacific Ocean at Rio Del Mar (Santa Cruz County) to determine beneficial use support and results are as follows: 0 of 93 samples exceed the criterion for Coliform, Fecal. | ||||
Data Reference: | AB 411 Data for 2004 | ||||
AB 411 Data for 2005 | |||||
AB 411 Data for 2006 | |||||
SWAMP Data: | Non-SWAMP | ||||
Water Quality Objective/Criterion: | California Ocean Plan (SWRCB 2005) states that the single sample maximum for fecal coliform shall not exceed 400 MPN/100 mL. | ||||
Objective/Criterion Reference: | Water Quality Control Plan Ocean Waters of California. California Ocean Plan 2005. Sacramento, CA: State Water Resources Control Board, California Environmental Protection Agency | ||||
Evaluation Guideline: | |||||
Guideline Reference: | |||||
Spatial Representation: | Data for this line of evidence for Pacific Ocean at Rio Del Mar (Santa Cruz County) was collected at one AB411 monitoring site (Aptos Creek Mouth) | ||||
Temporal Representation: | Data was collected over the time period 3/8/2004 - 12/26/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year. | ||||
Environmental Conditions: | |||||
QAPP Information: | QA information not available | ||||
QAPP Information Reference(s): | |||||