| Acme Fill Corporation | 29 | 34 | 170,181.99 |
| Advance Auto Body | 3 | 6 | 957.27 |
| Air Prods. Mfg. Corp. Martinez Waterfront Rd | 1 | 1 | 3,788.00 |
| Air Products & Chemicals, Inc | 6 | 14 | 20,843.90 |
| Allied Waste Industries | 2 | 2 | 12,841.29 |
| American Cleaners | 1 | 1 | 411.47 |
| American Marble | 2 | 2 | 14,647.97 |
| Another Time Antiques | 2 | 4 | 1,093.60 |
| Aqua Graphic Technology Usa | 1 | 2 | 940.64 |
| Central Contra Costa Sanitary | 22 | 68 | 246,947.60 |
| Chevron Products Co | 7 | 25 | 8,489.47 |
| Contra Costa County | 15 | 30 | 1,826.14 |
| Contra Costa Regional Medical | 13 | 54 | 2,730.68 |
| Crystal Cleaners | 1 | 1 | 566.61 |
| Highlander Cleaning Center | 1 | 1 | 536.83 |
| It Corp / Montezuma Hills Facility | 28 | 28 | 181.69 |
| It Corp / Panoche Facility | 28 | 28 | 22,038.27 |
| It Corporation, Vine Hill Faci | 1 | 1 | 8,394.49 |
| Kaiser Permanente Medical Cent | 10 | 18 | 217.32 |
| Landry Service Co Inc | 1 | 2 | 0.01 |
| Martinez Auto Body | 2 | 7 | 2,409.80 |
| Martinez City Rubbish | 28 | 28 | 285.51 |
| Martinez Cogen Limited Partner | 8 | 42 | 491,049.13 |
| Martinez Landfill (Old) | 28 | 28 | 7,906.20 |
| Monsanto Company | 9 | 22 | 5,389.83 |
| Mt View Sanitary District | 6 | 12 | 3,729.54 |
| Mt View Sanitary District | 10 | 12 | 815.44 |
| Pacific Bell | 6 | 6 | 241.62 |
| Rhodia Inc | 11 | 48 | 975,234.40 |
| Rhodia Inc. | 2 | 4 | 2,826.40 |
| Right Away Redy Mix | 7 | 15 | 43,416.83 |
| Shell Chemical Lp | 6 | 42 | 20,978.36 |
| Shell Martinez Catalyst Plant | 12 | 22 | 327.43 |
| Shell Martinez Refinery | 22 | 1419 | 14,591,405.27 |
| Shell Oil Co / Martinez Sludge Ponds | 28 | 28 | 1,715.36 |
| Shell Oil Co. | 40 | 57 | 202,902.03 |
| Shore Terminals - Martinez | 10 | 43 | 45,826.24 |
| Sunrise Cleaners | 2 | 2 | 1,465.46 |
| Telfer Oil Company | 4 | 6 | 2,199.61 |
| Tesoro Refining And Marketing | 1 | 10 | 11,307.20 |
| Tesoro Refining And Marketing | 28 | 1177 | 22,082,685.22 |
| Tosco / Old Sites (Formerly Avon Refinery) | 28 | 28 | 63,237.99 |
| Tosco Refining C/O Montgomery | 1 | 1 | 6.60 |
| Tosco Refining Co-Amorco Termi | 20 | 35 | 824,458.33 |
| Va Medical Center | 13 | 65 | 4,702.85 |
| Village Oaks Cleaners | 1 | 1 | 1,150.11 |
