| Ace Cleaners | 1 | 1 | 603.59 |
| Advanced Auto Body Center | 2 | 2 | 234.51 |
| Advanced Auto Body Center | 1 | 3 | 1,410.07 |
| American Canyon Levee Ds | 28 | 28 | 2,051.99 |
| American Canyon Sanitary Landfill | 28 | 28 | 3,981.39 |
| Anthony'S Auto Craft | 1 | 1 | 55.28 |
| Atmi | 1 | 2 | 225.24 |
| Bar 49 Ranch / Solid Waste Disposal Site | 28 | 28 | 15,117.89 |
| Bel-Aire Cleaners | 2 | 2 | 1,139.36 |
| Black Hawk Body Shop | 1 | 2 | 982.12 |
| Breaktime Coffee Service | 5 | 5 | 341.35 |
| Brown Valley Cleaners | 2 | 2 | 1,703.76 |
| Burnseds Frame & Body Shop | 1 | 1 | 850.88 |
| Byron Orris Inc | 3 | 6 | 4,749.45 |
| Chardonnay Cleaners | 2 | 2 | 1,855.43 |
| Collotype Labels International | 1 | 1 | 968.26 |
| Cultured Stone Corporation | 9 | 38 | 16,215.37 |
| Dey L P | 6 | 6 | 632.00 |
| Dow Cleaners | 2 | 2 | 1,307.36 |
| Estate Wine Label Company | 2 | 5 | 1,437.00 |
| Fidel'S Auto Body | 1 | 1 | 0.00 |
| Gas Recovery Systems, Inc | 5 | 10 | 194,327.33 |
| Green'S Cleaners | 2 | 3 | 2,230.08 |
| Hidden Glen Dump | 28 | 28 | 248.32 |
| Highway Safety Products/Div Of | 7 | 30 | 27,258.19 |
| Homestake Mining Company | 16 | 19 | 863.71 |
| Hydro Conduit Corporation | 8 | 26 | 12,648.42 |
| Iasco | 1 | 2 | 904.00 |
| Japan Airlines | 5 | 5 | 57.08 |
| Jensen'S Ornamental Inc | 3 | 6 | 749.51 |
| Jenson Motor Center | 4 | 6 | 3,547.67 |
| Jonergin Pacific | 1 | 5 | 1,216.02 |
| Lito Auto Body Inc | 3 | 16 | 7,064.41 |
| Lockshaws Custom Finishing | 1 | 3 | 54.12 |
| Marco Paper Products | 2 | 6 | 105,993.06 |
| Midwestern Pipeline Services | 9 | 18 | 19,321.51 |
| Miracle Auto Painting | 1 | 2 | 1,189.74 |
| Mont La Salle Vineyard | 28 | 28 | 248.32 |
| Napa Chrysler Inc | 2 | 3 | 472.07 |
| Napa Collision Center | 1 | 2 | 709.33 |
| Napa County Airport | 5 | 5 | 169.60 |
| Napa Garbage Service/Disposal | 3 | 8 | 12,953.61 |
| Napa Nissan Inc | 1 | 1 | 803.20 |
| Napa Pipe Corporation | 6 | 8 | 255.96 |
| Napa Pipe Corporation | 10 | 11 | 9,148.57 |
| Napa Sanitation District - Sos | 13 | 35 | 22,226.27 |
| Napa Sanitation District Landfill | 28 | 28 | 248.32 |
| Napa State Hospital | 8 | 40 | 134,734.21 |
| Napa Valley Cast Stone Inc | 2 | 3 | 3,230.12 |
| Napa Valley College | 28 | 28 | 380.42 |
| Napa Valley Petroleum Inc | 1 | 5 | 2,136.00 |
| Napa Valley Publishing Company | 2 | 4 | 2,496.27 |
| Napa-Vallejo Waste Management | 16 | 16 | 61,815.32 |
| Napco Painting Contractors, In | 1 | 3 | 2,642.44 |
| Nova Group Inc | 1 | 3 | 1,023.57 |
| Nova Group, Inc | 5 | 9 | 2,621.58 |
| Platinum Auto Body Shop | 1 | 1 | 83.76 |
| Pro Tones | 2 | 2 | 143.66 |
| Queen Of The Valley Hospital | 1 | 2 | 0.12 |
| Richard Pierce Funeral Service | 6 | 6 | 265.31 |
| River Park Cleaners | 1 | 1 | 215.85 |
| Shamrock Materials Inc | 2 | 6 | 1,302.94 |
| Shelton Cleaners | 2 | 2 | 412.47 |
| Soscol Auto Body Inc | 5 | 8 | 1,945.73 |
| Steel Construction Services | 1 | 2 | 245.00 |
| Syar Industries Inc | 10 | 45 | 25,402.24 |
| Treadway & Wigger Funeral Chap | 1 | 1 | 0.00 |
| Tulocay Cemetery Association | 4 | 6 | 0.39 |
| United Rentals Inc | 2 | 8 | 1,274.04 |
| Valley Auto Body | 1 | 2 | 128.76 |
| Valley Cleaners | 1 | 1 | 791.66 |
