San Leandro Bay (part of SF Bay, Lower)

Waterbody ID (WBID): CAB2042004020020930194957
County / counties: Alameda
Regional Water Board: Regional Board 2 - San Francisco Bay Region
Waterbody type: Bay & Harbor
Condition category: Category 5 — 303(d) listed, TMDL required
Integrated Report cycle: 2026

303(d) listings (11)

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	151224	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
DDT (Dichlorodiphenyltrichloroethane)Pesticides	151554	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
DieldrinPesticides	151225	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Dioxin compounds (including 2,3,7,8-TCDD)Toxic Organics	151226	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Furan CompoundsToxic Organics	151228	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
Invasive SpeciesOther Cause	170595	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
LeadMetals	141050	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
MercuryMetals	153021	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	San Francisco Bay Mercury	—
PAHs (Polycyclic Aromatic Hydrocarbons)Toxic Organics	151354	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
PCBs (Polychlorinated biphenyls)Toxic Organics	141051	List on 303(d) list (being addressed by USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	San Francisco Bay PCBs	—
ZincMetals	141054	Do Not Delist from 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low

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: CAB2042004020020930194957
CALWNUM: 2204.100000, 2204.200400
WBD code: 180500041001, 180500041002
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: 87.58 Acres

Facilities with an NAL exceedance for a listed pollutant (4)

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

Darling Ingredients Inc2 38I005930

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

Moz Designs Inc2 01I028957

Zinc · most recent exceedance RY 2021 · association: derived nearby in watershed

Pacific Galvanizing2 01I001872

Zinc · most recent exceedance RY 2021 · association: derived receiving water

Palo Alto Airport2 43I025184

Zinc · 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

ABF Freight System Inc

Oakland · No Exposure Certification · 0.43 km away

derived_nearby_in_watershed