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

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Pismo Beach (San Luis Obispo County) was collected at one AB411 monitoring site (PB4)

Temporal Representation:

Data was collected over the time period 1/4/2005 - 12/28/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 15591, Enterococcus	Region 3
Pacific Ocean at Pismo State Beach (San Luis Obispo County), south of Pismo Pier

LOE ID:

20099

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

111

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Pismo State Beach (San Luis Obispo County), south of Pismo Pier to determine beneficial use support and results are as follows: 10 of 111 samples exceed the criterion for Enterococci.

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Pismo Beach (San Luis Obispo County) was collected at one AB411 monitoring site (PB4)

Temporal Representation:

Data was collected over the time period 1/4/2005 - 12/28/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 15591, Enterococcus	Region 3
Pacific Ocean at Pismo State Beach (San Luis Obispo County), south of Pismo Pier

LOE ID:

31439

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Data was collected from April 2005 through October 2006. A total of 63 dry month (April through October) single samples were collected. Two of the 63 samples exceeded the water quality objective.

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Pismo Beach (San Luis Obispo County) was collected at one AB411 monitoring site (PB4)

Temporal Representation:

Data was collected for weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 15591, Enterococcus	Region 3
Pacific Ocean at Pismo State Beach (San Luis Obispo County), south of Pismo Pier

LOE ID:

31438

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Beach monitoring data was collected from April 2005 through October 2006. 14 dry month (April through October) geomeans calculated. 1 of the 14 geomeans exceeded the geomean water quality objective.

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Pismo Beach (San Luis Obispo County) was collected at one AB411 monitoring site (PB4)

Temporal Representation:

Data was collected for 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	15592	Region 3
Pacific Ocean at Pismo State Beach (San Luis Obispo County), south of Pismo Pier

Pollutant:	Fecal Coliform
Final Listing Decision:	List on 303(d) list (TMDL required list)
Last Listing Cycle's Final Listing Decision:	New Decision
Revision Status	Revised
Sources:	Source Unknown
Expected TMDL Completion Date:	2021
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	Regional Board Conclusion: This pollutant is being considered for placement on the section 303(d) list under section 3.3 of the Listing Policy. Under section 3.3 a single line of evidence is necessary to assess listing status. 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, 19 of 122 samples exceeded the single sample maximum Objective, 3 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. Ninteen of 122 samples exceeded the single sample maximum Objective, 3 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. 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 recommended to place this water body on the 303(d) list for fecal coliform based on the addition of 2 LOEs (31436 and 31437) assessing the AB411 (dry weather) data for this water body. Staff reviewed the bacteria data for this water body in the Central Coast Region described in the comment letter. Staff recommendation has changed for this water body - pollutant combination based on evaluation of the dry weather data that was not included in the original Central Coast Region assessment. On August 4, 2010 the State Water Board approved the staff listing recommendation to place this water body on the 303(d) list for fecal coliform. 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, 19 of 122 samples exceeded the single sample maximum Objective, 3 of 24 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. Thirteen of 74 samples exceeded the recreational use single sample criteria and 2 of 14 geo-metric mean calculations exceeded the geo-metric mean criteria. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination on the section 303(d) list. This conclusion is based on the staff findings that: 1. The 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. Ninteen of 122 samples exceeded the single sample maximum Objective, 3 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. Thirteen of 74 dry weather samples exceeded the recreational use water quality objective and this exceeds the allowable frequency listed in Table 3.2 (at a four percent exceedance percentage AB411) of the Listing Policy. 5. Two of 14 dry weather geometric mean calculations exceeded the recreational use geometric mean criteria. This exceeds the allowable frequency listed in Table 3.2 (at a four percent exceedance percentage AB411). 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 recommended to place this water body on the 303(d) list for fecal coliform based on the addition of 2 LOEs (31436 and 31437) assessing the AB411 (dry weather) data for this water body. Staff reviewed the bacteria data for this water body in the Central Coast Region described in the comment letter. Staff recommendation has changed for this water body - pollutant combination based on evaluation of the dry weather data that was not included in the original Central Coast Region assessment. On August 4, 2010 the State Water Board approved the staff listing recommendation to place this water body on the 303(d) list for fecal coliform. 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, 19 of 122 samples exceeded the single sample maximum Objective, 3 of 24 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. Thirteen of 74 samples exceeded the recreational use single sample criteria and 2 of 14 geo-metric mean calculations exceeded the geo-metric mean criteria. Based on the readily available data and information, the weight of evidence indicates that there is sufficient justification for placing this water segment-pollutant combination on the section 303(d) list. This conclusion is based on the staff findings that: 1. The 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. Ninteen of 122 samples exceeded the single sample maximum Objective, 3 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. Thirteen of 74 dry weather samples exceeded the recreational use water quality objective and this exceeds the allowable frequency listed in Table 3.2 (at a four percent exceedance percentage AB411) of the Listing Policy. 5. Two of 14 dry weather geometric mean calculations exceeded the recreational use geometric mean criteria. This exceeds the allowable frequency listed in Table 3.2 (at a four percent exceedance percentage AB411). 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 be placed on the section 303(d) list because applicable water quality standards are being exceeded.

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

Line of Evidence (LOE) for Decision ID 15592, Fecal Coliform	Region 3
Pacific Ocean at Pismo State Beach (San Luis Obispo County), south of Pismo Pier

LOE ID:

20081

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

122

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Pismo State Beach (San Luis Obispo County), south of Pismo Pier to determine beneficial use support and results are as follows: 19 of 122 samples exceed the criterion for Coliform, Fecal.

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Pismo Beach (San Luis Obispo County) was collected at one AB411 monitoring site (PB4)

Temporal Representation:

Data was collected over the time period 1/4/2005 - 12/28/2006. This includes weekly AB411 monitoring between April 1 and October 31 of each year.

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 15592, Fecal Coliform	Region 3
Pacific Ocean at Pismo State Beach (San Luis Obispo County), south of Pismo Pier

LOE ID:

31437

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Beach monitoring data was collected from April 2005 through October 2006. A total of 74 dry month (April through October) single samples were collected with 13 samples exceeding the water quality objective.

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

AB 411-California Ocean Plan (SWRCB 2005) states that the single sample maximum for fecal coliform shall not exceed 400 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Pismo Beach (San Luis Obispo County) was collected at one AB411 monitoring site (PB4)

Temporal Representation:

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

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 15592, Fecal Coliform	Region 3
Pacific Ocean at Pismo State Beach (San Luis Obispo County), south of Pismo Pier

LOE ID:

31436

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Beach monitoring data was collected from April 2005 through October 2006. A total of 74 dry month (April through October) single samples were collected with 14 dry month geomeans calculated. 2 of the 14 geomeans exceeded the geomean water quality objective.

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

AB-411 California Ocean Plan (SWRCB 2005) states that the 30-day geometric mean for fecal coliform shall not exceed 200 MPN/100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Pismo Beach (San Luis Obispo County) was collected at one AB411 monitoring site (PB4)

Temporal Representation:

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

Environmental Conditions:

QAPP Information:

QA information not available

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 15592, Fecal Coliform	Region 3
Pacific Ocean at Pismo State Beach (San Luis Obispo County), south of Pismo Pier

LOE ID:

20080

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Pismo State Beach (San Luis Obispo County), south of Pismo Pier to determine beneficial use support and results are as follows: 3 of 24 samples exceed the criterion for Coliform, Fecal.

Data Reference: