3 facilities in Montana reported releasing a combined 146 pounds of styrene to air, water, and land in 2024.
| Facility | City | On-site (lb) |
|---|---|---|
| Phillips 66 Co Billings Refinery | Billings | 146 |
| Smc Nye Mine Site | Nye | 0 |
| Stillwater Mining Co East Boulder Mine | Big Timber | 0 |
← All Styrene releases nationwide · Montana pollution overview