Waterbody profile

Official Water Board record · 2026 cycle

Rio Hondo Reach 1 (Confl. LA River to Snt Ana Fwy)

Waterbody ID (WBID): CAR4051501019990202112624
County / counties: Los Angeles
Regional Water Board: Regional Board 4 - Los Angeles Region
Waterbody type: River & Stream
Condition category: Category 5 — 303(d) listed, TMDL required
Integrated Report cycle: 2026

303(d) listings (8)

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
CopperMetals	70760	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Los Angeles River Metals (13)	—
Indicator BacteriaPathogens	150321	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Los Angeles River Pathogens (15)	—
LeadMetals	69754	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Los Angeles River Metals (13)	—
Oil and GreaseNuisance	138335	List on 303(d) list (TMDL required list)	Revised	5A — TMDL still required	—	Low
pHOther Cause	68305	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Los Angeles River Nitrogen (11)	—
ToxicityTotal Toxics	69308	List on 303(d) list (TMDL required list)	Original	5A — TMDL still required	—	Low
TrashTrash	70258	List on 303(d) list (being addressed by USEPA approved TMDL)	Original	5B — Addressed by USEPA-approved TMDL	Los Angeles River Trash (12)	—
ZincMetals	138336	Do Not Delist from 303(d) list (being addressed with USEPA approved TMDL)	Revised	5B — Addressed by USEPA-approved TMDL	Los Angeles River Metals (13)	—

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: CAR4051501019990202112624
CALWNUM: 4412.1
WBD code: 180701050303, 180701050402
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: 4.55 Miles

Facilities with an NAL exceedance for a listed pollutant (191)

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

25th Street4 19I026030

Copper, pH, Zinc · most recent exceedance RY 2022 · association: derived watershed association

75S Corp FMC Metals4 19I022308

Copper, pH, Zinc · most recent exceedance RY 2023 · association: derived watershed association

A B Sandblast Co4 19I017126

pH, Zinc · most recent exceedance RY 2021 · association: derived watershed association

AAA Plating Inspection Inc4 19I002783

Copper, Zinc · most recent exceedance RY 2018 · association: derived watershed association

Aacon Auto Parts Wrecking4 19I017083

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

Abantos Auto Wrecking4 19I030044

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

Accurate Anodizing Inc4 19I003307

Zinc · most recent exceedance RY 2017 · association: derived watershed association

Accurate Steel4 19I009388

Oil and Grease, Zinc · most recent exceedance RY 2024 · association: derived nearby in watershed

Ace Clearwater Ent4 19I017994

Oil and Grease · most recent exceedance RY 2021 · association: derived watershed association

ADAMS AUTO WRECKING4 19I028293

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

Advance Pipe Bending and Engineering Company4 19I027547

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

Aerocraft Heat Treating Co In4 19I000098

Copper, Lead, Oil and Grease, pH · most recent exceedance RY 2025 · association: derived watershed association

Ajax Forge Co4 19I000107

Copper, Zinc · most recent exceedance RY 2018 · association: derived watershed association

Al Mag Heat Treat4 19I021973

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

Alloy Processing4 19I024577

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

Alum A Coat4 19I029501

Copper, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Amazing Tile & Marble Inc4 19I029615

Oil and Grease · most recent exceedance RY 2023 · association: derived watershed association

American Industrial Services4 19I024802

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

Anadite California Restoration Trust4 19I000667

pH, Zinc · most recent exceedance RY 2025 · association: derived nearby in watershed

Anaplex Corporation4 19I003487

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

Arbe Ent Inc4 19I000591

Oil and Grease, pH · most recent exceedance RY 2019 · association: derived watershed association

Arcadia Inc4 19I021228

Oil and Grease, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Atlas Iron Metal4 19I007206

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

Avalanche Used Auto Parts4 19I028994

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

BakeMarkUSA4 19I027839

Oil and Grease · most recent exceedance RY 2020 · association: derived watershed association

Barkens Hardchrome4 19I019098

pH · most recent exceedance RY 2018 · association: derived watershed association

Bender CCP4 19I028079

Oil and Grease, Zinc · most recent exceedance RY 2024 · association: derived watershed association

Best Auto Wrecking Recycling4 19I020548

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

BJ Used Auto Parts Dismantlers Inc4 19I020451

Zinc · most recent exceedance RY 2018 · association: derived nearby in watershed

Blue Circle Corp4 19I027862

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

Bob Martin Co4 19I014300

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

Bodycote Thermal Processing4 19I021600

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

Box Express Mfg4 19I029151

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

Buddy Bar Casting Corp4 19I016400

Zinc · most recent exceedance RY 2024 · association: derived nearby in watershed

C & M Metals Inc4 19I003733

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

CA Metal X4 19I000881

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

CA010 El Monte US Army Reserve Ctr4 19I016450

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

Carlton Forge Works4 19I001365

Copper, Oil and Grease, Zinc · most recent exceedance RY 2021 · association: derived watershed association

Cascade Steel Rolling Mills Inc4 19I004254

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

Castle Metals Aerospace4 19I024276

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

Central LA Recycling Transfer Station4 19I018974

Lead, Oil and Grease, Zinc · most recent exceedance RY 2017 · association: derived watershed association

Chemco Products Company4 19I003939

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

City Fibers Inc4 19I018643

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

Cocos Auto Dismantler Corp4 19I021965

Copper, pH, Zinc · most recent exceedance RY 2017 · association: derived watershed association

Compton Recycling and Transfer Station4 19I022479

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

Compton Steel Co Inc4 19I027412

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

Continental Forge Co4 19I009698

pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Contractors Cargo Company4 19I010494

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

CR Laurence Co Inc4 19I023967

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

CR Laurence Co Inc4 19I023950

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

D and T Recycling4 19I028662

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

Delgado Brothers Co4 19I013674

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

Dickson Testing Company4 19I009315

Copper, Zinc · most recent exceedance RY 2024 · association: derived nearby in watershed

Dodge City4 19I019412

Copper, Zinc · most recent exceedance RY 2017 · association: derived watershed association

Downtown Auto Dismantlers Inc4 19I023612

pH, Zinc · most recent exceedance RY 2021 · association: derived watershed association

Durham Transportation4 19I004360

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

Dywidag Systems International4 19I026025

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

E M E Inc4 19I000346

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

El Rey Auto Parts Corp4 19I026623

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

Engineered Coatings4 19I027106

Oil and Grease, pH · most recent exceedance RY 2025 · association: derived watershed association

Evoqua Water Technologies LLC4 19I024304

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

Fabri Cote4 19I028960

Oil and Grease, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

FedEx LAXRT4 19I026336

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

Fenico LLC4 19I029137

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

First Transit Inc 572314 19I019685

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

Fleetwood Continental Inc4 19I009313

Copper, Lead, Zinc · most recent exceedance RY 2017 · association: derived watershed association

Flo Mac Inc4 19I026285

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

FLOWSERVE4 19I009855

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

Foster Farms Fernandos Foods4 19I022320

Oil and Grease, pH · most recent exceedance RY 2025 · association: derived watershed association

FS Precision Tech LLC4 19I019377

Copper, pH, Zinc · most recent exceedance RY 2022 · association: derived watershed association

Garfay Auto Sales Parts4 19I025274

pH, Zinc · most recent exceedance RY 2019 · association: derived watershed association

GCP Applied Technologies Inc4 19I026391

pH · most recent exceedance RY 2023 · association: derived nearby in watershed

GL Veneer4 19I027915

Oil and Grease · most recent exceedance RY 2019 · association: derived watershed association

golden state eng4 19I025444

Zinc · most recent exceedance RY 2017 · association: derived watershed association

Granitize4 19I019718

Oil and Grease · most recent exceedance RY 2019 · association: derived nearby in watershed

Griswold Industries dba Soundcast4 19I028438

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

Grow More Inc4 19I026791

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

GWS Inc4 19I025256

Oil and Grease · most recent exceedance RY 2020 · association: derived nearby in watershed

Hanson Aggregates LLC4 19I002487

Copper, Oil and Grease, pH, Zinc · most recent exceedance RY 2022 · association: derived watershed association

Hawk Industries4 19I015453

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

Henkel Electronic Materials LLC4 19I022187

pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Hexpol Compounding4 19I028409

pH, Zinc · most recent exceedance RY 2024 · association: derived watershed association

HK Auto Salvage4 19I023868

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

Hughes Bros Aircrafters4 19I012943

Copper, Zinc · most recent exceedance RY 2022 · association: derived nearby in watershed

Industrial Lead Construction Inc4 19I028377

Lead, Zinc · most recent exceedance RY 2020 · association: derived watershed association

International Metal Trading Inc4 19I027942

pH, Zinc · most recent exceedance RY 2023 · association: derived watershed association

International Paper Compton4 19I021728

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

j & h auto wrecking4 19I026774

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

J & J Trade LLC4 19I027880

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

J B Hunt Trans Inc4 19I009085

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

J F Mccaughin Div M Argueso C4 19I017064

Oil and Grease · most recent exceedance RY 2024 · association: derived watershed association

J P Turgeon Sons4 19I004413

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

JB Hunt Transport Inc Pico Rivera Terminal4 19I030069

Zinc · most recent exceedance RY 2025 · association: derived nearby in watershed

JBI Inc4 19I006166

Oil and Grease · most recent exceedance RY 2016 · association: derived watershed association

Jenco Plating Inc4 19I001469

pH · most recent exceedance RY 2017 · association: derived watershed association

Jimco Inc4 19I029808

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

Johns Manville Corp4 19I013959

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

JRS Resources Inc4 19I025071

Oil and Grease · most recent exceedance RY 2019 · association: derived watershed association

LAUSD San Julian Garage4 19I024476

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

LEGACY FRAMES4 19I029098

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

Lekos Dye Finishing4 19I023356

pH · most recent exceedance RY 2017 · association: derived watershed association

Leyva Top Line Recycling Center4 19I026527

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

Long Beach Transit Anaheim Street Facility4 19I010593

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

Los Angeles Times4 19I016013

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

Lunday Thagard Company DBA World Oil Refining4 19I003169

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

Lunday Thagard Company Dba World Oil Refining4 19I003170

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

Lynwood Auto Dismantling Inc4 19I022537

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

Magnesium Alloy Product Co4 19I004719

Copper, pH, Zinc · most recent exceedance RY 2024 · association: derived watershed association

Marko Metals4 19I024771

Copper, Lead, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Mattco Forge Inc4 19I025496

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

MEC Auto Dismantling4 19I026460

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

Medway Plastics Corp4 19I020752

Oil and Grease · most recent exceedance RY 2022 · association: derived watershed association

Metal Surfaces4 19I001684

Zinc · most recent exceedance RY 2024 · association: derived nearby in watershed

Metro Division 114 19I000496

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

Metro Division 24 19I000487

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

Metro Division 44 19I000489

pH · most recent exceedance RY 2022 · association: derived nearby in watershed

Modern Concepts Inc4 19I018552

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

Monico Alloys4 19I000068

Zinc · most recent exceedance RY 2017 · association: derived watershed association

Monico Alloys Inc4 19I019156

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

Monico Alloys Incorporated4 19I026686

Zinc · most recent exceedance RY 2017 · association: derived watershed association

Morrells Electro Plating Inc4 19I021937

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

Mr Ford Auto Salvage4 19I030021

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

NA Gonzalez Enterprises Inc4 19I025148

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

Neptune Foods4 19I004283

Oil and Grease, pH · most recent exceedance RY 2024 · association: derived watershed association

Nucor Warehouse Systems4 19I021543

pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Ochoa Group Corporation4 19I026983

Oil and Grease, Zinc · most recent exceedance RY 2025 · association: derived nearby in watershed

Old Country Millwork Inc4 19I023292

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

One Stop Recycling4 19I025317

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

Optimum Recycling Inc4 19I028031

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

Orion Plastics4 19I020826

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

Owens Corning4 19I003711

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

P T Metals4 19I023593

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

Pacific Pipeline Systems LLC4 19I015189

Oil and Grease, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Pallet Masters Inc4 19I014410

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

Paramount Dairy Inc4 19I025089

pH · most recent exceedance RY 2018 · association: derived watershed association

Pasadena Water Power4 19I000994

Copper, Oil and Grease, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Perfection Machine4 19I007042

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

Pico Rivera Material Recovery Facility4 19I029250

Oil and Grease, pH · most recent exceedance RY 2024 · association: derived watershed association

Porche Foreign Auto Wrecking4 19I011749

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

Precision Wire Products4 19I023421

Oil and Grease, pH, Zinc · most recent exceedance RY 2023 · association: derived watershed association

Premco Forge Inc4 19I027926

pH, Zinc · most recent exceedance RY 2022 · association: derived receiving water

Press Forge4 19I002338

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

Pro Cast Industries4 19I027122

Copper, pH, Zinc · most recent exceedance RY 2022 · association: derived watershed association

Punch Press Products Inc4 19I000335

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

R C Recycle4 19I018979

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

Ralphs Grocery Central Facility4 19I000841

Oil and Grease, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Reyes Coca Cola Bottling LLC4 19I027443

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

Robertsons Ready Mix Paramount4 19I015296

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

Rosecrans Used Auto Parts Dism4 19I018279

Oil and Grease, Zinc · most recent exceedance RY 2018 · association: derived watershed association

RS Processing Co Inc4 19I021078

pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

SA Recycling4 19I021111

Copper, Zinc · most recent exceedance RY 2018 · association: derived watershed association

SA Recycling4 19I022544

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

SA Recycling4 19I022546

Copper, Lead, Zinc · most recent exceedance RY 2025 · association: derived watershed association

SA Recycling4 19I021115

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

SA Recycling LLC4 19I029307

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

Samson Auto Salvage4 19I010670

Oil and Grease · most recent exceedance RY 2023 · association: derived watershed association

Sandee Plastic Extrusions4 19I020801

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

Sanders Service Inc4 19I014783

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

Saputo Cheese Usa Inc4 19I018512

Copper, Oil and Grease, pH · most recent exceedance RY 2021 · association: derived nearby in watershed

Saroyan Lumber Co Inc4 19I027318

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

Schneider National Carriers Inc4 19I023306

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

So Cal Auto Wreck4 19I002970

Copper, pH, Zinc · most recent exceedance RY 2019 · association: derived watershed association

Soelzer Inc dba Firestone Fabricators4 19I028474

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

South El Monte Auto Salvage4 19I003687

Copper, Oil and Grease, Zinc · most recent exceedance RY 2025 · association: derived watershed association

South Gate Transfer Station4 19I006188

Copper, pH, Zinc · most recent exceedance RY 2025 · association: derived nearby in watershed

Southeast Towing and Salvage Inc4 19I010215

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

Southern Cal Trans4 19I024655

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

Suez WTS Pico Rivera Service Center4 19I027684

pH · most recent exceedance RY 2023 · association: derived nearby in watershed

Sungro Products LLC4 19I021631

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

Sunshine FPC Inc4 19I020791

pH · most recent exceedance RY 2015 · association: derived nearby in watershed

Surface Treatment Inspection4 19I004459

Oil and Grease, pH, Zinc · most recent exceedance RY 2023 · association: derived watershed association

Sweetener Products Co Trucking Division4 19I014854

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

Techni Cast Corp4 19I001231

Copper, pH · most recent exceedance RY 2024 · association: derived nearby in watershed

Ted Levine Drum Co4 19I002754

Oil and Grease, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

THRIFTY ICE CREAM4 19I003425

pH, Zinc · most recent exceedance RY 2023 · association: derived watershed association

Trepanning Specialties Inc4 19I027152

Oil and Grease, Zinc · most recent exceedance RY 2024 · association: derived watershed association

Tytan Metals4 19I028621

Copper, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Tzeng Long Usa Inc4 19I015432

pH, Zinc · most recent exceedance RY 2017 · association: derived watershed association

Universal Molding Co Inc4 19I014397

Copper, Oil and Grease, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Universal Molding Company Inc4 19I026222

Oil and Grease, Zinc · most recent exceedance RY 2021 · association: derived watershed association

Universal Warehouse Company4 19I030042

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

USA Waste of California Inc4 19I012082

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

Vacco Industries4 19I002969

Copper, pH, Zinc · most recent exceedance RY 2024 · association: derived watershed association

Valence Surface Technologies dba Triumph Processing Inc4 19I028084

pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

Valence Surface Technologies dba Triumph Processing Inc4 19I028085

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

Van Dyk Tank Lines Inc Cool Transports4 19I029036

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

VCLAD Laminates4 19I029805

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

Weber Metals4 19I000406

Oil and Grease, pH, Zinc · most recent exceedance RY 2025 · association: derived watershed association

World Oil Environmental Services4 19I023114

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

World Oil Environmental Services4 19I022974

Oil and Grease, pH · most recent exceedance RY 2016 · association: derived watershed association

Zamboni Company USA Inc4 19I021129

Copper, pH · most recent exceedance RY 2025 · 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

10 Roads Express LLC

Montebello · Notice of Intent · 0.29 km away

derived_nearby_in_watershed