Contra Costa County, CA
The federal environmental record for Contra Costa County (population 1,155,025): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.
3
Superfund NPL sites
14
federal cleanup sites
0
PFAS-detecting water systems
34
TRI facilities
59
open tank releases
Superfund NPL sites
| Site | City | Status | Listed |
|---|---|---|---|
| Concord Naval Weapons Station | Concord | on the NPL | 12/16/1994 |
| Liquid Gold Oil Corp. | Richmond | deleted | 09/08/1983 |
| United Heckathorn Co. | Richmond | on the NPL | 03/14/1990 |
Drinking water: PFAS testing
No public water system serving Contra Costa reported a PFAS detection in the UCMR5 national testing round. Systems serving under 3,300 people were only sampled in part, so absence from this table is not proof of absence in the water.
Facilities reporting toxic releases (2024)
34 facilities in Contra Costa filed TRI reports for 2024, totalling 3.0M lb released. The 25 largest by volume:
| Facility | City | Top chemicals | Total released |
|---|---|---|---|
| CHEVRON PRODUCTS CO RICHMOND REFINERY | RICHMOND | Ammonia, Vanadium compounds | 806k lb |
| MARTINEZ REFINING CO LLC | MARTINEZ | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ammonia | 735k lb |
| CORTEVA AGRISCIENCE LLC | PITTSBURG | Nitrapyrin, Diisocyanates | 376k lb |
| PHILLIPS 66 RODEO RENEWABLE ENERGY COMPLEX | RODEO | Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nickel compounds | 307k lb |
| AIR LIQUIDE LARGE INDUSTRIES US LP - RODEO HYDROGEN PLANT | RODEO | Zinc compounds, Ammonia | 246k lb |
| SHELL CATALYSTS & TECHNOLOGIES - PITTSBURG | PITTSBURG | Molybdenum trioxide, Nickel And Nickel Compounds | 203k lb |
| MECS INC. | MARTINEZ | Vanadium compounds, Vanadium (except when contained in an alloy) | 145k lb |
| TESORO REFINING & MARKETING CO LLC | MARTINEZ | n-Hexane, Ammonia | 111k lb |
| AIR PRODUCTS & CHEMICALS INC (MARTINEZ-WATERFRONT ROAD) | MARTINEZ | Ammonia, Methanol | 28k lb |
| AIR PRODUCTS WEST COAST HYDROGEN - HP-2 | MARTINEZ | Methanol, Ethylene | 19k lb |
| SHELL CHEMICAL LP - MARTINEZ CATALYST PLANT | MARTINEZ | Silver And Silver Compounds, Toluene | 14k lb |
| ECO SERVICES OPERATIONS CORP. | MARTINEZ | Ammonia, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 7k lb |
| SILGAN CONTAINERS MFG CORP | ANTIOCH | Certain glycol ethers, Xylene (mixed isomers) | 5k lb |
| AIR PRODUCTS WEST COAST HYDROGEN - HP-1 | MARTINEZ | Methanol, Ammonia | 3k lb |
| PHILLIPS 66 RICHMOND TERMINAL | RICHMOND | Toluene, Xylene (mixed isomers) | 2k lb |
| BRENNTAG PACIFIC INC. | RICHMOND | Ethylene glycol | 2k lb |
| CHEVRON RICHMOND TECHNOLOGY CENTER | RICHMOND | n-Hexane, Toluene | 948 lb |
| CHEMTRADE WEST US LLC | RICHMOND | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 805 lb |
| BIO-RAD LABORATORIES INC | RICHMOND | Methanol, Tetrachloroethylene | 689 lb |
| MILITARY OCEAN TERMINAL CONCORD | CONCORD | Toluene, Naphthalene | 233 lb |
| K2 PURE SOLUTIONS NOCAL LP | PITTSBURG | Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 96 lb |
| HENKEL US OPERATIONS CORP | BAY POINT | Aluminum (fume or dust), Tetrabromobisphenol A | 48 lb |
| BENDA TOOL & MODEL WORKS | HERCULES | Aluminum (fume or dust), Zinc (fume or dust) | 26 lb |
| HASA INC | PITTSBURG | Chlorine | 5 lb |
| GEORGIA-PACIFIC GYPSUM LLC | ANTIOCH | Lead compounds | 4 lb |
Underground fuel tanks
EPA's UST Finder records 378 tank facilities in Contra Costa: 1,005 tanks in service and 0 closed. 903 fuel releases are on record, of which 59 remain open. Open releases are cleanups that have not reached "no further action".
Radon
EPA maps Contra Costa as Zone 2, moderate predicted indoor radon (2 to 4 pCi/L average). Radon and air quality are covered in depth on lung.com.
The record for one specific address
County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.
Get the report - $39All federal cleanup sites on file
The wider Superfund enterprise inventory (SEMS) for Contra Costa, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.
- BLACK HAWK BLACK KITE TUG SITERICHMOND
- CONCORD NAVAL WEAPONS STATIONCONCORD
- CONTINENTAL CAN CO USA PLT 80PITTSBURG
- CORAY AND SONS CHROME PLATINGPITTSBURG
- CROWLEY ENVIRONMENTAL SERV CORPRICHMOND
- DEFENSE FUEL SUPPLY POINT - OZOLMARTINEZ
- FULTON SHIPYARDANTIOCH
- LIQUID GOLD OIL CORP.RICHMOND
- MARTINEZ AMTRAK MERCURY SPILLMARTINEZ
- MARTINEZ REFININGMARTINEZ
- MOUNT DIABLO MERCURY MINE, AKA MARSH CREEK RD ABANDONED DUMP SITECLAYTON
- PITTSBURG POWER PLANTPITTSBURG
- UNITED HECKATHORN CO.RICHMOND
- ZENECA INC RICHMOND AG PLANTRICHMOND