| Arco Facility #9617 | 5 | 5 | 542.08 |
| Arco Facility #9618 | 5 | 5 | 491.78 |
| Arco Facility #9619 | 5 | 5 | 444.44 |
| Barnett (C. R.) Tank Farm | 1 | 4 | 1,049.50 |
| Bob Beaty Ford | 9 | 9 | 884.76 |
| Bundy & Bevilacqua, Inc. | 9 | 9 | 542.92 |
| Bundy & Bevilacqua, Inc. | 9 | 9 | 1,893.53 |
| Calmat Company | 6 | 40 | 122,612.88 |
| Canyon Rock, Sand & Gravel | 25 | 78 | 1,096.58 |
| Chevron #202037 | 5 | 5 | 406.25 |
| Circle K #5236 | 5 | 5 | 161.57 |
| City Of Simi Valley Public Ser | 6 | 36 | 7,714.90 |
| Eldorado Auto Body, Inc. | 9 | 9 | 1,675.69 |
| Enderle Fuel Injection | 2 | 2 | 401.55 |
| George'S Auto Body | 9 | 9 | 209.46 |
| Gts Customs | 9 | 9 | 460.81 |
| Hydro Systems Inc. | 2 | 7 | 21,740.69 |
| Impressions West | 3 | 3 | 175.98 |
| Malabar International | 1 | 2 | 0.00 |
| Midland Color Ink Technology | 11 | 11 | 2,191.78 |
| Mobil Oil 11-Jro (G&G) | 5 | 5 | 629.10 |
| Mobil Oil 11-Kyl(Tapo Canyon) | 5 | 5 | 544.74 |
| Natel Engineering | 4 | 13 | 6,871.00 |
| Nptest L.L.C. | 1 | 1 | 2.00 |
| O'Loughlin & Company (1) | 1 | 1 | 2.25 |
| P.W. Gillibrand Co. | 5 | 5 | 5.03 |
| P.W. Gillibrand Company Sand | 6 | 22 | 73,722.78 |
| Paradise Sandblasting | 8 | 8 | 0.01 |
| Pre-Con Products Ltd | 2 | 4 | 308.00 |
| Pride Of The West | 5 | 5 | 22.19 |
| Printmasters | 9 | 9 | 108.79 |
| Rancho Simi Park Swimming Pool | 6 | 18 | 14,924.90 |
| Rockwell Area 1 & 2 | 28 | 28 | 13,179.82 |
| Royal Coatings | 13 | 21 | 7,292.62 |
| Santa Susana Field Lab. | 29 | 205 | 34,565.93 |
| Santa Susana Field Laboratory | 26 | 258 | 601,943.34 |
| Santa Susana Tapo Road 1962 | 28 | 28 | 1,650.36 |
| Schlumberger Technologies | 12 | 16 | 3,160.02 |
| Shell Station | 5 | 5 | 355.68 |
| Simi Valley Adventist Hospital | 27 | 74 | 1,953.91 |
| Simi Valley Auto Body | 9 | 9 | 787.57 |
| Simi Valley Car Wash | 5 | 5 | 36.10 |
| Simi Valley Landfill | 50 | 81 | 219,011.89 |
| Simi Valley Royal Ave. 1962 | 28 | 28 | 13,179.82 |
| Simi Vly Cnty Sanitation | 16 | 40 | 33,129.59 |
| Spragues' Rock And Sand Co | 2 | 2 | 2,525.60 |
| Star Auto Body Shop | 9 | 9 | 343.52 |
| Tanks D' Art | 2 | 3 | 105.68 |
| Tapo Rock & Sand Products | 6 | 32 | 1,522.58 |
| Tencal Inc. | 6 | 8 | 16.61 |
| Texaco #106-1184 | 5 | 5 | 488.82 |
| The Body Shop | 9 | 9 | 2,513.53 |
| Tierra Rejada Landfill | 28 | 28 | 1,650.36 |
| Tosco #6067 | 5 | 5 | 370.48 |
| Tosco Corporation Site #31244 | 5 | 5 | 622.27 |
| Unocal #30742 | 5 | 5 | 349.17 |
| Unocal #30750 | 5 | 5 | 375.51 |
| Unocal #30974 | 5 | 5 | 329.94 |
| Vintage Petroleum Inc. | 34 | 295 | 33,817.98 |
| Vista Landscape Lighting | 6 | 8 | 1,529.98 |
| Wambold Furniture | 9 | 27 | 113,320.93 |
| William L. Morris Chevrolet | 9 | 9 | 1,144.49 |
| World Class Paint & Body | 10 | 11 | 3,384.08 |
