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

Supporting Information

Regional Board 1 - North Coast Region

Water Body Name: Eureka Plain HU, Humboldt Bay, South Jetty
Water Body ID: CAC1100007020200818034145
Water Body Type: Coastal & Bay Shoreline
Region 1     
Eureka Plain HU, Humboldt Bay, South Jetty
Pollutant: Trash
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 CWA section 303(d) List under section 3.7 of the Listing Policy.

One line of evidence is available to assess this pollutant. For trash data, there is no appropriate interpretive evaluation guideline that meets the requirements set forth in Section 6.1.3 of the Listing Policy for ocean beaches in the North Coast Region. Without an appropriate evaluation guideline, it is not possible to determine if the quantity of trash collected on the beach constitutes an exceedance of the trash water quality objective.

Based on the readily available data and information, the weight of evidence indicates that there is insufficient information to place this water segment-pollutant combination on the CWA section 303(d) List.

This conclusion is based on the staff findings that:

1. It is unknown if the data used satisfies the data quality requirements of section 6.1.4 of the Policy.
2. It is unknown if the data used satisfies the data quantity requirements of section 6.1.5 of the Policy.
3. An evaluation guideline meeting the requirements of Section 6.1.3 of the Listing Policy was unavailable.
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: This decision was made by SWRCB staff.
State Board Review of Regional Board Conclusion and Recommendation:
State Board Decision Recommendation: After review of the available data and information, SWCRB staff conclude that there is insufficient information to place this waterbody-pollutant combination on the 303(d) list.
Line of Evidence (LOE) for Decision ID 121606, Trash
Region 1     
Eureka Plain HU, Humboldt Bay, South Jetty
LOE ID: 198732
Pollutant: Trash
LOE Subgroup: Pollutant-Nuisance
Matrix: -N/A
Fraction: None
Beneficial Use: Non-Contact Recreation
Number of Samples: 0
Number of Exceedances: 0
Data and Information Type: Not Specified
Data Used to Assess Water Quality: Volunteers collected trash, categorized the types, and provided the total weight of all trash in pounds, during one-day cleanup events on 09/25/2010, 09/16/2011, 09/15/2012, 09/21/2013, and 09/20/2014, with totals of 410, 70, 421, 1200, and 650 lbs., respectively. There were counts of numbers of pieces of 41 separate categories of trash (e.g., cigarette butts, bottles, grocery bags).
Data Reference: Dataset provided by the Center for Biological Diversity. Contains trash data from California Coastal Comission-sponsored beach cleanup days in the North Coast Region at nine sites: Clam Beach County Park, North Jetty/Samoa Dunes Recreation Area, South Jetty/South Spit, Trinidad State Beach, Glass Beach, MacKerricher State Park, Ten Mile Beach, North Salmon Creek Beach, and South Salmon Creek Beach.
Water Quality Objective/Criterion: Trash shall not be present in ocean waters, along shorelines or adjacent areas in amounts that adversely affect beneficial uses or cause nuisance. (California Ocean Plan, 2019).
Objective/Criterion Reference: SWRCB. 2005. Water Quality Control Plan, Ocean Waters of California (Ocean Plan). California Environmental Protection Agency, State Water Resources Control Board. February 2, 2019
Evaluation Guideline:
Guideline Reference:
Spatial Representation: A single set of coordinates was provided, representing an unspecified area of South Jetty/South Spit: Latitude, 40.7406; longitude, -124.243.
Temporal Representation: Samples were taken on five different one-day cleanup events on 9/25/2010, 09/16/2011, 09/15/2012, 09/21/2013, and 09/20/2014.
Environmental Conditions:
QAPP Information: A "Site Captain Guide" document was provided, which included instructions to volunteers for a trash clean-up day. The document does not meet Listing Policy guidelines as a QAPP document.
QAPP Information Reference(s): Site Captain Guide 2017