| Polluter | Pollutants | Sources | Emissions |
|---|---|---|---|
| Amer Colld_upton Plant | 10 | 11 | 45,413.00 |
| Black Hills Corporation _osage | 8 | 15 | 5,784,799.35 |
| Newcastle #2 Landfill | 28 | 28 | 575.15 |
| Upton #4 Landfill | 28 | 28 | 2,921.92 |
| Weston County Dump / Central Landfill | 28 | 28 | 136.45 |
| Wyoming Pipeline Co_mush Creek Station | 9 | 12 | 476,133.01 |
| Wyoming Refining Co_newcastle Refinery | 13 | 51 | 1,908,251.20 |