| Accent Counter Tops Inc | 2 | 2 | 64.71 |
| Allied Chemical Company / Pittsburg | 28 | 28 | 63,237.99 |
| Allied Waste Industries (Kelle | 18 | 19 | 795,914.07 |
| American Auto Painting | 4 | 9 | 3,325.31 |
| American Color Graphics | 7 | 48 | 67,221.37 |
| Angel'S Cleaners | 1 | 1 | 634.07 |
| Antioch Building Materials Com | 7 | 26 | 29,195.19 |
| Arran Metal Decoratng | 4 | 5 | 695.82 |
| Bay Area Pallet Co | 10 | 10 | 11.23 |
| Bombardier Transportation Hold | 8 | 28 | 20,177.99 |
| Ca Newsrack Refurbishing Co | 2 | 2 | 124.28 |
| California Expanded Metal Prod | 7 | 8 | 704.44 |
| Calpine Pittsburg Llc | 8 | 49 | 932,530.46 |
| Chemical And Pigment Company | 3 | 6 | 34.51 |
| Chemicals And Pigments Company / Pittsburg | 28 | 28 | 1,715.36 |
| Concord Iron Works, Inc | 5 | 6 | 8,008.34 |
| Contra Costa Cabinetry Inc | 2 | 4 | 77.63 |
| Contra Costa Vinyl Service | 2 | 2 | 263.27 |
| Criterion Catalysts Company Lp | 10 | 157 | 164,088.06 |
| Delta Diablo Sanitation | 6 | 6 | 479.47 |
| Delta Energy Center | 17 | 69 | 717,965.66 |
| Diablo Services Corp | 2 | 2 | 0.24 |
| Dow Chemical Company | 25 | 226 | 166,849.44 |
| Faultless Cleaners | 2 | 2 | 807.45 |
| Fermin'S Auto Body Repair | 1 | 3 | 519.19 |
| Flo Dor Manufacturing | 1 | 1 | 1,114.35 |
| Fontaine Cleaner | 1 | 1 | 424.96 |
| Frank De Rosa Autobody | 2 | 2 | 130.32 |
| G & K Services, Inc | 8 | 13 | 235,616.49 |
| General Chemical Corporation | 13 | 41 | 77,213.63 |
| Gomez Auto Body | 1 | 4 | 2,476.53 |
| Great American Drycleaning Est | 1 | 1 | 586.85 |
| Gwf Power Systems,Lp (Site 1) | 17 | 40 | 259,382.34 |
| Gwf Power Systems,Lp (Site 2) | 18 | 43 | 263,803.91 |
| Gwf Power Systems,Lp (Site 5) | 16 | 42 | 276,792.06 |
| Harris Yacht Harbor, Inc | 1 | 1 | 1.25 |
| Hasa Inc | 1 | 1 | 17.60 |
| Jess Enterprises | 2 | 4 | 765.90 |
| Joe Russo Automotive Painting | 1 | 3 | 1,308.93 |
| John Stanley Auto Body - Fabri | 3 | 6 | 1,379.82 |
| Johns Manville Corporation | 11 | 45 | 111,219.09 |
| K & S Body Shop | 2 | 3 | 1.30 |
| Kemwater North America Company | 2 | 2 | 9.80 |
| Knight'S Auto Restoration | 1 | 1 | 15.68 |
| Koch Carbon, Llc | 2 | 2 | 170.54 |
| Loctite Aerospace | 12 | 51 | 20,312.38 |
| Los Medanos Energy Center | 6 | 24 | 54,154.97 |
| Marble Shop, Inc | 2 | 2 | 4,160.69 |
| Mirant Delta, Llc | 40 | 279 | 6,133,981.83 |
| Pacific Bell Corporation | 6 | 6 | 506.00 |
| Polychemie, Inc | 3 | 5 | 1,432.62 |
| Recycling Center And Transfer | 2 | 2 | 2,699.20 |
| Redwood Painting | 6 | 10 | 11,060.57 |
| Redwood Painting Co | 2 | 4 | 1,626.49 |
| Roll Technology West | 1 | 1 | 0.06 |
| Signode Supply Corporation | 10 | 29 | 11,357.58 |
| Signode Western Ops. | 1 | 1 | 8.00 |
| Skill Clean | 1 | 1 | 93.61 |
| Special Edition Auto Body | 2 | 2 | 18.15 |
| Stauffer Chemical / Pittsburg | 28 | 28 | 285.51 |
| Stripping Workshop | 1 | 3 | 5,505.42 |
| Tesoro Refining And Marketing | 6 | 18 | 75,081.37 |
| U Save Dry Cleaners | 1 | 1 | 539.63 |
| Us Steel / Pittsburg Disposal Site | 28 | 28 | 7,906.20 |
| Uss-Posco Industries | 16 | 171 | 265,199.27 |
| Vee Jay Marine Services | 4 | 7 | 1,409.13 |
| Venoco, Inc | 8 | 16 | 5,664.91 |
| Winter Chevrolet/Honda | 3 | 8 | 3,399.45 |
