Waterbody profile

Official Water Board record · 2026 cycle

San Pedro Bay Near Off Shore Zones

Waterbody ID (WBID): CAB4051200019990921151740
County / counties: Los Angeles, Orange
Regional Water Board: Regional Board 4 - Los Angeles Region
Waterbody type: Bay & Harbor
Condition category: Category 4a — TMDL completed
Integrated Report cycle: 2026

303(d) listings (7)

Each row is one official listing decision from Appendix A of the Final 2026 California Integrated Report. Source terminology is preserved as published.

Pollutant / stressor	Decision ID	Final listing decision	Decision status	TMDL requirement status	TMDL project	TMDL priority
ChlordanePesticides	135754	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Dominguez, LA/LB Harbors, San Pedro Bay Metals (75 & 78), toxics(73a) and PAHs (74)	—
CopperMetals	135756	List on 303(d) list (being addressed by USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Dominguez, LA/LB Harbors, San Pedro Bay Metals (75 & 78), toxics(73a) and PAHs (74)	—
DDE (Dichlorodiphenyldichloroethylene)Pesticides	149846	List on 303(d) list (being addressed by USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Dominguez, LA/LB Harbors, San Pedro Bay Metals (75 & 78), toxics(73a) and PAHs (74)	—
DDT (Dichlorodiphenyltrichloroethane)Pesticides	149847	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Dominguez, LA/LB Harbors, San Pedro Bay Metals (75 & 78), toxics(73a) and PAHs (74)	—
PCBs (Polychlorinated biphenyls)Toxic Organics	135763	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Dominguez, LA/LB Harbors, San Pedro Bay Metals (75 & 78), toxics(73a) and PAHs (74)	—
Total DDT (sum of 4,4'- and 2,4'- isomers of DDT, DDE, and DDD)Pesticides	69050	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Dominguez, LA/LB Harbors, San Pedro Bay Metals (75 & 78), toxics(73a) and PAHs (74)	—
ToxicityTotal Toxics	135769	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Dominguez, LA/LB Harbors, San Pedro Bay Metals (75 & 78), toxics(73a) and PAHs (74)	—

Source & provenance

Agency: California State Water Resources Control Board
Report: Final 2026 California Integrated Report
Dataset: Appendix A — 2026 303(d) List of Impaired Waters
Imported: Aug 21, 2026, 12:44 AM UTC
Waterbody ID: CAB4051200019990921151740
CALWNUM: 4404.700000, 4405.120000, 4405.150000, 4411.010000, 4411.020000, 4411.030000, 4411.040000, 4412.100000, 4801.110000
WBD code: 180701060606, 180701060702, 180701060703, 180702010002
Geometry: Official Water Board GIS (CA_WATERBOARDS_GIS_FINAL_2026)

View official Water Board fact sheet ↗Download Appendix A source file ↗

Location

Official 2026 Water Board geometry. Demonstration facility markers are shown for context only.

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Watershed: —
Assessed size: 11848 Acres

Facilities with an NAL exceedance for a listed pollutant (20)

Geographically associated industrial stormwater facilities whose reported results exceeded an Industrial General Permit Numeric Action Level for a pollutant this waterbody is listed for.

Derived

Aerotec Alloys4 19I020661

Copper · most recent exceedance RY 2025 · association: derived watershed association

AltAir Paramount Facility4 19I027557

Copper · most recent exceedance RY 2022 · association: derived watershed association

Bodycote Thermal Processing4 19I023136

Copper · most recent exceedance RY 2019 · association: derived watershed association

Certified Alloy Products Inc4 19I005554

Copper · most recent exceedance RY 2021 · association: derived watershed association

Continental Heat Treating Inc4 19I000552

Copper · most recent exceedance RY 2021 · association: derived watershed association

Downey4 19I028471

Copper · most recent exceedance RY 2025 · association: derived watershed association

Fortune Metal Inc of RI4 19I024809

Copper · most recent exceedance RY 2025 · association: derived watershed association

Heraeus Precious Metals North America LLC4 19I015954

Copper · most recent exceedance RY 2022 · association: derived watershed association

International Transp Serv Inc4 19I025357

Copper · most recent exceedance RY 2017 · association: derived nearby in watershed

Marina Shipyard4 19I004977

Copper · most recent exceedance RY 2016 · association: derived watershed association

Miller Castings Inc4 19I024769

Copper · most recent exceedance RY 2021 · association: derived watershed association

New Indy TriPAQ LLC4 19I028572

Copper · most recent exceedance RY 2023 · association: derived watershed association

Philatron Wire Cable4 19I023391

Copper · most recent exceedance RY 2023 · association: derived watershed association

Pier J Berths J243 to J247 J266 to J2704 19I025359

Copper · most recent exceedance RY 2019 · association: derived nearby in watershed

Santa Fe Auto Salvage4 19I001451

Copper · most recent exceedance RY 2019 · association: derived watershed association

Ship and Shore Environmental Inc4 19I028525

Copper · most recent exceedance RY 2022 · association: derived watershed association

SSA Terminals4 19I025337

Copper · most recent exceedance RY 2024 · association: derived watershed association

Turbine Engine Components Tech4 19I016865

Copper · most recent exceedance RY 2021 · association: derived watershed association

Universal Molding Extrusion Co4 19I013881

Copper · most recent exceedance RY 2015 · association: derived watershed association

Virgin Orbit LLC4 19I027148

Copper · most recent exceedance RY 2020 · association: derived watershed association

This is derived co-occurrence between a calculated NAL comparison and the official 303(d) listing for this waterbody. An NAL exceedance triggers Exceedance Response Actions under the permit; it is not a violation and does not establish that any facility caused or contributed to this impairment.

Derived facility associations

Industrial stormwater facilities geographically associated with this waterbody. These are derived spatial associations, not Water Board findings.

Derived

3C Delivery Corp

Santa Fe Springs · No Exposure Certification

derived_watershed_association