Draft California 2026 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 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 Arroyo Quemada Beach (Santa Barbara County) was collected at one AB411 monitoring site (Arroyo Quemada)

Temporal Representation:

Data was collected over the time period 1/5/2004 - 3/27/2006. 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 170442, Enterococcus	Region 3
Pacific Ocean Shoreline at Arroyo Quemada Beach (Santa Barbara County)

LOE ID:

19605

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 Arroyo Quemada Beach (Santa Barbara County) to determine beneficial use support and results are as follows: 4 of 23 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 Arroyo Quemada Beach (Santa Barbara County) was collected at one AB411 monitoring site (Arroyo Quemada)

Temporal Representation:

Data was collected over the time period 1/5/2004 - 3/27/2006. 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):


DECISION ID	170444	Region 3
Pacific Ocean Shoreline at Arroyo Quemada Beach (Santa Barbara County)

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)(2020)
Revision Status	Revised
Impairment from Pollutant or Pollution:	Pollutant

Regional Board Conclusion:	No new data were assessed during the 2026 cycle. During the 2020-2022 cycle, site WP0000183 was erroneously associated with Pacific Ocean at Refugio Beach (Santa Barbara County). During the 2026 cycle, site WP0000183 was removed from Pacific Ocean at Arroyo Quemada Beach and correctly associated with Pacific Ocean at Refugio Beach (Santa Barbara County). This decision corrects the error. The Water Quality Control Plan for Ocean Waters (“Ocean Plan”) contains two bacteria water quality objectives applicable to the REC-1 beneficial use: a fecal coliform water quality objective and an enterococci water quality objective. This waterbody is being considered for placement on the CWA section 303(d) List under section 3.3 of the Listing Policy using the fecal coliform objective. For these data, Listing Policy section 3.3 instructs to use the binomial distribution table in section 3.2. A total of two lines of evidence of fecal coliform data were evaluated for this waterbody. Four of 105 single sample maximums and zero of 23 geometric means exceed to objective for the water contact recreation water quality standard. Based on the readily available data and information, the weight of evidence indicates that there is not sufficient justification to add this waterbody to the 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. Four of 105 single sample maximums exceed to objective 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:

Line of Evidence (LOE) for Decision ID 170444, Fecal Coliform	Region 3
Pacific Ocean Shoreline at Arroyo Quemada Beach (Santa Barbara County)

LOE ID:

19604

Pollutant:

Fecal Coliform

LOE Subgroup:

Pollutant-Water

Matrix:

Water

Fraction:

None

Beneficial Use:

Water Contact Recreation

Number of Samples:

105

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 Arroyo Quemada Beach (Santa Barbara County) to determine beneficial use support and results are as follows: 4 of 105 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 Arroyo Quemada Beach (Santa Barbara County) was collected at one AB411 monitoring site (Arroyo Quemada)

Temporal Representation:

Data was collected over the time period 1/5/2004 - 3/27/2006. 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 170444, Fecal Coliform	Region 3
Pacific Ocean Shoreline at Arroyo Quemada Beach (Santa Barbara County)

LOE ID:

19603

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 Arroyo Quemada Beach (Santa Barbara County) to determine beneficial use support and results are as follows: 0 of 23 samples exceed the criterion for Coliform, Fecal.

Data Reference: