Hazardous waste · inspections by year
Large quantity generators inspected in Montana in 2025
- 21Handlers inspected
- 39Inspections on record
- 16Handlers inspected in 2024
- 3rdAmong Montana counties that year
Montana has 21 hazardous waste handlers with at least one inspection on record during 2025, across 39 separate inspections. That compares with 16 in 2024. It is the 3rd largest of the 3 Montana counties with three or more handlers inspected that year. Each row below carries the date the inspection was recorded, the agency that recorded it and the kind of inspection it was.
Other years
Inspections recorded in 2025
| Date | Handler | Where | Kind | Recorded by |
|---|---|---|---|---|
| 2025-12-10 | MSU BOZEMAN MONTANA STATE UNIVERSITY | Bozeman | COMPLIANCE EVALUATION INSPECTION | S |
| 2025-11-25 | LIBBY GROUNDWATER SITE | Libby | COMPLIANCE EVALUATION INSPECTION | S |
| 2025-11-25 | CHS INC LAUREL REFINERY | Laurel | FINANCIAL RECORD REVIEW | S |
| 2025-11-06 | UPS BILLINGS CENTER | Billings | COMPLIANCE EVALUATION INSPECTION | S |
| 2025-10-21 | PAR MONTANA LLC | Billings | FINANCIAL RECORD REVIEW | S |
| 2025-10-02 | JUPITER SULPHUR LLC - BILLINGS | Billings | NON-FINANCIAL RECORD REVIEW | S |
| 2025-09-23 | CALUMET MONTANA REFINING LLC | Great Falls | FINANCIAL RECORD REVIEW | S |
| 2025-09-10 | PAR MONTANA LLC | Billings | COMPLIANCE EVALUATION INSPECTION | S |
| 2025-08-19 | MALMSTROM AIR FORCE BASE | Malmstrom Air Force Base | COMPLIANCE EVALUATION INSPECTION | S |
| 2025-08-15 | FORMER WOLF POINT REFINERY | Wolf Point | NON-FINANCIAL RECORD REVIEW | S |
| 2025-07-30 | PHILLIPS 66 COMPANY BILLINGS REFINERY | Billings | NON-FINANCIAL RECORD REVIEW | S |
| 2025-07-10 | FORMER WOLF POINT REFINERY | Wolf Point | COMPLIANCE EVALUATION INSPECTION | S |
| 2025-06-26 | GLAXOSMITHKLINE BIOLOGICALS N AMERICA | Hamilton | COMPLIANCE EVALUATION INSPECTION | S |
| 2025-05-22 | CALUMET MONTANA REFINING LLC | Great Falls | COMPLIANCE EVALUATION INSPECTION | S |
| 2025-05-08 | PHILLIPS 66 COMPANY BILLINGS REFINERY | Billings | FINANCIAL RECORD REVIEW | S |
| 2025-04-18 | THE UNIVERSITY OF MONTANA MISSOULA | Missoula | NON-FINANCIAL RECORD REVIEW | S |
| 2025-04-17 | PHILLIPS 66 COMPANY BILLINGS REFINERY | Billings | COMPLIANCE EVALUATION INSPECTION | S |
| 2025-04-08 | US ANTIMONY MINE & MILL | Thompson Falls | NON-FINANCIAL RECORD REVIEW | S |
| 2025-04-08 | APPLIED MATERIALS | Kalispell | NON-FINANCIAL RECORD REVIEW | S |
| 2025-04-08 | APPLIED MATERIALS | Kalispell | NON-FINANCIAL RECORD REVIEW | S |
| 2025-04-03 | THE UNIVERSITY OF MONTANA MISSOULA | Missoula | COMPLIANCE EVALUATION INSPECTION | S |
| 2025-03-21 | CALUMET MONTANA REFINING LLC | Great Falls | NON-FINANCIAL RECORD REVIEW | S |
| 2025-03-20 | REC ADVANCED SILICON MATERIALS, LLC (REC SILICON) | Silverbow | NON-FINANCIAL RECORD REVIEW | S |
| 2025-03-19 | DEFIANCE MACHINE INC | Columbia Falls | NON-FINANCIAL RECORD REVIEW | S |
| 2025-03-17 | CHS INC LAUREL REFINERY | Laurel | CORRECTIVE ACTION COMPLIANCE EVALUATION | S |
| 2025-03-17 | CHS INC LAUREL REFINERY | Laurel | COMPLIANCE EVALUATION INSPECTION | S |
| 2025-03-06 | PHILLIPS 66 COMPANY BILLINGS REFINERY | Billings | NON-FINANCIAL RECORD REVIEW | S |
| 2025-03-03 | EVERLAST CLIMBING INDUSTRIES INC DBA SPECTRUM PRODUCTS | Missoula | NON-FINANCIAL RECORD REVIEW | S |
| 2025-02-28 | CHS INC LAUREL REFINERY | Laurel | NON-FINANCIAL RECORD REVIEW | S |
| 2025-02-28 | MSU BOZEMAN MONTANA STATE UNIVERSITY | Bozeman | NON-FINANCIAL RECORD REVIEW | S |
| 2025-02-27 | PAR MONTANA LLC | Billings | NON-FINANCIAL RECORD REVIEW | S |
| 2025-02-26 | LIBBY GROUNDWATER SITE | Libby | NON-FINANCIAL RECORD REVIEW | S |
| 2025-02-25 | FORMER WOLF POINT REFINERY | Wolf Point | NON-FINANCIAL RECORD REVIEW | S |
| 2025-02-14 | JUPITER SULPHUR LLC - BILLINGS | Billings | NON-FINANCIAL RECORD REVIEW | S |
| 2025-02-13 | MALMSTROM AIR FORCE BASE | Malmstrom Air Force Base | NON-FINANCIAL RECORD REVIEW | S |
| 2025-02-13 | COLUMBUS PROCESSING FACILITY | Columbus | NON-FINANCIAL RECORD REVIEW | S |
| 2025-02-13 | BRENNTAG PACIFIC - BILLINGS | Billings | NON-FINANCIAL RECORD REVIEW | S |
| 2025-02-07 | TALEN MONTANA LLC COLSTRIP 3 & 4 | Colstrip | NON-FINANCIAL RECORD REVIEW | S |
| 2025-02-03 | GLAXOSMITHKLINE BIOLOGICALS N AMERICA | Hamilton | NON-FINANCIAL RECORD REVIEW | S |
Figures from EPA’s RCRAInfo download.