| Arkansas |
| American Oil Refinery | El Dorado |
| |
| California |
| Allied Chemical Plant | Acres |
| Chevron Oil Refinery | Richmond |
| Dow Chemical Plant | Pittsburg |
| Gulf Oil Refinery | Santa Fe Springs |
| Occidental Oil Refinery | La Brea |
| Powerine Oil Refinery | Santa Fe Springs |
| Rothchild Oil Refinery | Santa Fe Springs |
| Shell Oil Refinery | Domingos |
| Shell Oil Refinery | Martinez |
| Standard Oil Refinery | San Pedro |
| TOSCO Oil Refinery | Arvin |
| U S Rubber Tire Plant | East Los Angeles |
| Union Oil Cracking Plant | Wilmington |
| Union Oil Refinery (UNOCAL) | Carson |
| Union Oil Refinery (UNOCAL) | El Segundo |
| Union Oil Refinery (UNOCAL) | Rodeo |
| Union Oil Refinery (UNOCAL) | San Pedro |
| |
| Montana |
| CONOCO Oil Refinery | Billings |
| Kaiser Cement Plant | Helena |
| Sinclair Oil Refinery | Sinclair |
| |
| Nebraska |
| Phillips Petroleum Fertilizer Plant | Beatrice |
| |
| Oregon |
| 3M Chemical Plant | White City |
| American Bitimuls & Asphalt (1954-1960) | Portland |
| Atochem Chemical Plant | Portland |
| Borden Chemical Plant | La Grande |
| Borden Chemical Plant | Springfield |
| Chevron Asphalt (1960-1994) | Portland |
| Chevron Oil Marketing Plant | Portland |
| Chipman Chemical Plant | Portland |
| Creosote Plant | Portland (St. Johns) |
| Georgia-Pacific Resin Plant | Albany |
| Hercules Powder Chem. Plant | Portland |
| Pennsalt Chemical Plant | Portland |
| Pennwalt Chemical Plant | Portland |
| Portland Gas & Coke Plant | Portland |
| Rhodia Chemical Plant | Portland |
| Rhone-Poulence Chemical Plant | Portland |
| Shell Chemical Plant | Deer Island |
| Shell Chemical Plant (Reickle) | Deer Island |
| Shell Oil Cracking Plant | Portland |
| STAN-CAL Asphalt (1947-1954) | Portland |
| Stouffer Chemical Plant | Portland |
| Trumble Asphalt Plant | Portland |
| Union Asphalt Plant | Portland |
| Union Oil Cracking Plant | Portland |
| Van Waters & Rogers Chemical Plant | Portland |
| |
| Utah |
| American Oil Refinery | Salt Lake City |
| Chevron Oil Refinery | Ogden |
| Oil Refinery | Roosevelt |
| Standard Oil Refinery | Salt Lake City |
| |
| Washington |
| ARCO Oil Refinery | Cherry Point |
| Chevron Chemical Plant | Kennewick |
| Chevron Cracking Plant | Seattle |
| Creosote/Chemical Plant | Richland |
| Dow Chemical Plant | Wenatchee |
| Mobil Oil (TOSCO Northwest) | Ferndale |
| Shell Oil Refinery | Anacortes |
| Texaco Oil Refinery | Anacortes |
| Time Oil (U.S. Oil) | Tacoma |
| UNOCAL Chemical Plant | Kennewick |
| |
| Wyoming |
| Allied Chemical (soda ash) Plant | Green River |
| Standard Oil Refinery | Casper |
| Stouffer Chemical Plant | Green River |
| Texaco Oil Refinery | Casper |
| |
