| America Online Inc | 6 | 11 | 67,116.45 |
| Apac Virginia Incorporated- Manassas Plant | 5 | 11 | 96,252.34 |
| Bradford Landfill | 28 | 28 | 6,279.66 |
| City Of Manassas/Vmea | 5 | 15 | 247,560.00 |
| Concophillips - Manassas Terminal | 8 | 28 | 78,888.66 |
| Glen-Gery Corporation - Capitol Plant | 18 | 42 | 430,742.14 |
| Lockheed Martin Manassas | 7 | 143 | 45,036.88 |
| Manassas City Of - Dominion Station | 5 | 10 | 57,851.67 |
| Manassas City Of/Church Street | 5 | 30 | 46,157.63 |
| Micron Technology Incorporated | 8 | 22 | 74,757.77 |
| Prince William County Sanitary Landfill | 22 | 60 | 336,083.71 |
| Robertson Landfill | 28 | 28 | 2,646.36 |
| Safety-Kleen Sys. (205801) | 1 | 2 | 6.00 |
| Transcontinental Gas Pipeline-Station 185 | 5 | 81 | 660,568.11 |
| Vertis Inc. | 7 | 17 | 191,057.65 |
