Draft California 2020 Integrated Report (303(d) List/305(b) Report)

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The geometric mean standard for enterococcus states that the entercoccus density shall not exceed 35 per 100 mL. Water Quality Control Plan for Ocean Waters 2009.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from station MB11.

Temporal Representation:

Samples were collected approximately once a week from 2007 to 2010.

Environmental Conditions:

QAPP Information:

The samples were collected for the Beach Watch program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 72414, Enterococcus	Region 3
Pacific Ocean at Morro Bay City Beach (Morro Rock)

LOE ID:

19319

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Central Coast Regional Board Staff assessed data for Pacific Ocean at Morro Bay City Beach (Morro Rock) to determine beneficial use support and results are as follows: 1 of 24 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 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 Morro Bay City Beach was collected at one AB411 monitoring site (MB11)

Temporal Representation:

Data was collected over the time period 1/4/2005 - 12/27/2006. 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 72414, Enterococcus	Region 3
Pacific Ocean at Morro Bay City Beach (Morro Rock)

LOE ID:

19320

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

108

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 Morro Bay City Beach (Morro Rock) to determine beneficial use support and results are as follows: 4 of 108 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 Morro Bay City Beach was collected at one AB411 monitoring site (MB11)

Temporal Representation:

Data was collected over the time period 1/4/2005 - 12/27/2006. 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 72414, Enterococcus	Region 3
Pacific Ocean at Morro Bay City Beach (Morro Rock)

LOE ID:

56296

Pollutant:

Enterococcus

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

189

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Beach Watch Program data that is collected by each County's Environmental Health Department for Pacific Ocean at Morro Bay City Beach (Morro Rock) to determine beneficial use support and results are as follows: 4 of 189 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) single sample maximum for enterococcus density shall not exceed 104 per 100 mL.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Morro Bay City Beach (Morro Rock) was collected at 1 monitoring site [ MB11]

Temporal Representation:

Data was collected over the time period 1/1/2007-8/24/2010.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

Water Board staff assessed Beach Watch Program data that is collected by each County's Environmental Health Department. There is no QA Project Plan but instead each County follows their own Quality Assurance Procedures

QAPP Information Reference(s):


DECISION ID	81114	Region 3
Pacific Ocean at Morro Bay City Beach (Morro Rock)

Pollutant:	Fecal 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)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Four lines of evidence are available in the administrative record to assess this pollutant. Zero of 200 samples exceeded the geometric mean standard for fecal coliform (LOEs 19317 and 56299) and 2 of 292 samples exceeded the single sample maximum for fecal coliform (LOEs 19318 and 56298) for the water contact recreation water quality standard (Water Quality Control Plan: Ocean Waters of California, SWRCB, 2005). 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 CWA 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. Zero of 200 samples exceeded the geometric mean standard for fecal coliform (LOEs 19317 and 56299) and 2 of 292 samples exceeded the single sample maximum for fecal coliform (LOEs 19318 and 56298) for the water contact recreation water quality standard 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.

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.

Line of Evidence (LOE) for Decision ID 81114, Fecal Coliform	Region 3
Pacific Ocean at Morro Bay City Beach (Morro Rock)

LOE ID:

19317

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 Morro Bay City Beach (Morro Rock) to determine beneficial use support and results are as follows: 0 of 24 samples exceed the criterion for Coliform, Fecal.

Data Reference:

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

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

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

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Morro Bay City Beach was collected at one AB411 monitoring site (MB11)

Temporal Representation:

Data was collected over the time period 1/4/2005 - 12/27/2006. 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 81114, Fecal Coliform	Region 3
Pacific Ocean at Morro Bay City Beach (Morro Rock)

LOE ID:

56299

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

176

Number of Exceedances:

Data and Information Type:

Not Specified

Data Used to Assess Water Quality:

E. coli data results are assessed using the Ocean Plan objective for fecal coliform. A thirty day, rolling geomean was calculated for all data provided when four or more samples were collected within the 30 day period. 0 of the 176 geomeans exceeded the objective.

Data Reference:

California Ocean Plan Water Quality Control Plan Ocean Waters of California 2009

SWAMP Data:

Non-SWAMP

Water Quality Objective/Criterion:

The geometric mean standard for fecal coliform states that the fecal coliform density shall not exceed 200 per 100 mL. Water Quality Control Plan for Ocean Waters 2009.

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Samples were collected from station MB11.

Temporal Representation:

Samples were collected approximately once a week from 2007 to 2010.

Environmental Conditions:

QAPP Information:

The samples were collected for the Beach Watch program.

QAPP Information Reference(s):

Line of Evidence (LOE) for Decision ID 81114, Fecal Coliform	Region 3
Pacific Ocean at Morro Bay City Beach (Morro Rock)

LOE ID:

19318

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

106

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 Morro Bay City Beach (Morro Rock) to determine beneficial use support and results are as follows: 2 of 106 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 Morro Bay City Beach was collected at one AB411 monitoring site (MB11)

Temporal Representation:

Data was collected over the time period 1/4/2005 - 12/27/2006. 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 81114, Fecal Coliform	Region 3
Pacific Ocean at Morro Bay City Beach (Morro Rock)

LOE ID:

56298

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

186

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Beach Watch Program data that is collected by each County's Environmental Health Department. E. coli data results are assessed using the Ocean Plan single sample maximum objective for fecal coliform to determine beneficial use support for the station named Pacific Ocean at Morro Bay City Beach (Morro Rock) and results are as follows: 0 of 186 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) single sample maximum for fecal coliform density shall not exceed 400 per 100ml

Objective/Criterion Reference:

Evaluation Guideline:

Guideline Reference:

Spatial Representation:

Data for this line of evidence for Pacific Ocean at Morro Bay City Beach (Morro Rock) was collected at 1 monitoring site [ MB11]

Temporal Representation:

Data was collected over the time period 1/1/2007-8/24/2010.

Environmental Conditions:

Staff is not aware of any special conditions that might affect interpretation of the data.

QAPP Information:

QAPP Information Reference(s):


DECISION ID	80373	Region 3
Pacific Ocean at Morro Bay City Beach (Morro Rock)

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)(2016)
Revision Status	Original
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	This pollutant is being considered for placement on the CWA section 303(d) List under section 3.2 of the Listing Policy. Under section 3.2 a single line of evidence is necessary to assess listing status. Six lines of evidence are available in the administrative record to assess this pollutant. Six of 187 samples (LOE 56300) exceeded the shellfish harvesting water quality objective (Water Quality Control Plan: Ocean Waters of California, SWRCB, 2009). Zero of 202 samples exceeded the geometric mean standard for total coliform (LOEs 19407 and 56314), 1 of 293 samples exceeded the single sample maximum for total coliform (LOEs 19407 and 56301), and 1 of 106 samples exceeded the fecal coliform/total coliform ratio criteria (LOE 19408) for the water contact recreation water quality standard (Water Quality Control Plan: Ocean Waters of California, SWRCB, 2005). 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 CWA 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. Six of 187 samples (LOE 56300) exceeded the shellfish harvesting water quality objective (Water Quality Control Plan: Ocean Waters of California, SWRCB, 2009). Zero of 202 samples exceeded the geometric mean standard for total coliform (LOEs 19407 and 56314), 1 of 293 samples exceeded the single sample maximum for total coliform (LOEs 19407 and 56301), and 1 of 106 samples exceeded the fecal coliform/total coliform ratio criteria (LOE 19408) for the water contact recreation water quality standard. None of these 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.

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.

Line of Evidence (LOE) for Decision ID 80373, Total Coliform	Region 3
Pacific Ocean at Morro Bay City Beach (Morro Rock)

LOE ID:

56300

Pollutant:

Total Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Shellfish Harvesting

Number of Samples:

187

Number of Exceedances:

Data and Information Type:

PATHOGEN MONITORING

Data Used to Assess Water Quality:

Water Board staff assessed Beach Watch data for Pacific Ocean at Morro Bay City Beach (Morro Rock) to determine beneficial use support and results are as follows: 6 of 187 samples exceed the criterion for Coliform, Total.

Data Reference: