Hazardous waste · inspections by year
Large quantity generators inspected in Montana in 2026
- 22Handlers inspected
- 32Inspections on record
- 21Handlers inspected in 2025
- 3rdAmong Montana counties that year
Montana has 22 hazardous waste handlers with at least one inspection on record during 2026, across 32 separate inspections. That compares with 21 in 2025. 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 2026
| Date | Handler | Where | Kind | Recorded by |
|---|---|---|---|---|
| 2026-08-27 | CALUMET MONTANA REFINING LLC | Great Falls | FINANCIAL RECORD REVIEW | S |
| 2026-08-27 | USDA FOREST SERVICE - SAND CREEK AND BOBCAT LAKE FIRES | Wisdom | NON-FINANCIAL RECORD REVIEW | S |
| 2026-06-25 | PAR MONTANA LLC | Billings | FINANCIAL RECORD REVIEW | S |
| 2026-06-09 | JUPITER SULPHUR LLC - BILLINGS | Billings | NON-FINANCIAL RECORD REVIEW | S |
| 2026-06-05 | 14 MILLER LANE SKI HOUSE | Big Sky | NON-FINANCIAL RECORD REVIEW | S |
| 2026-05-12 | CALUMET MONTANA REFINING LLC | Great Falls | COMPLIANCE EVALUATION INSPECTION | S |
| 2026-05-06 | CHS INC LAUREL REFINERY | Laurel | NON-FINANCIAL RECORD REVIEW | S |
| 2026-04-20 | DECORATIVE INDUSTRIAL PLATING LLC | Helena | NON-FINANCIAL RECORD REVIEW | S |
| 2026-04-09 | PHILLIPS 66 COMPANY BILLINGS REFINERY | Billings | COMPLIANCE EVALUATION INSPECTION | S |
| 2026-04-02 | CALUMET MONTANA REFINING LLC | Great Falls | FINANCIAL RECORD REVIEW | S |
| 2026-04-01 | PHILLIPS 66 COMPANY BILLINGS REFINERY | Billings | FINANCIAL RECORD REVIEW | S |
| 2026-03-19 | THE UNIVERSITY OF MONTANA MISSOULA | Missoula | NON-FINANCIAL RECORD REVIEW | S |
| 2026-03-18 | CALUMET MONTANA REFINING LLC | Great Falls | NON-FINANCIAL RECORD REVIEW | S |
| 2026-03-16 | CHS INC LAUREL REFINERY | Laurel | COMPLIANCE EVALUATION INSPECTION | S |
| 2026-03-16 | CHS INC LAUREL REFINERY | Laurel | CORRECTIVE ACTION COMPLIANCE EVALUATION | S |
| 2026-03-13 | REC ADVANCED SILICON MATERIALS, LLC (REC SILICON) | Silverbow | NON-FINANCIAL RECORD REVIEW | S |
| 2026-03-13 | DEFIANCE MACHINE INC | Columbia Falls | NON-FINANCIAL RECORD REVIEW | S |
| 2026-03-12 | US ANTIMONY MINE & MILL | Thompson Falls | NON-FINANCIAL RECORD REVIEW | S |
| 2026-03-12 | EVERLAST CLIMBING INDUSTRIES INC DBA SPECTRUM PRODUCTS | Missoula | NON-FINANCIAL RECORD REVIEW | S |
| 2026-03-12 | BRENNTAG PACIFIC - BILLINGS | Billings | NON-FINANCIAL RECORD REVIEW | S |
| 2026-03-09 | APPLIED MATERIALS | Kalispell | NON-FINANCIAL RECORD REVIEW | S |
| 2026-03-09 | APPLIED MATERIALS | Kalispell | NON-FINANCIAL RECORD REVIEW | S |
| 2026-03-04 | PHILLIPS 66 COMPANY BILLINGS REFINERY | Billings | NON-FINANCIAL RECORD REVIEW | S |
| 2026-03-04 | PAR MONTANA LLC | Billings | NON-FINANCIAL RECORD REVIEW | S |
| 2026-03-04 | MSU BOZEMAN MONTANA STATE UNIVERSITY | Bozeman | NON-FINANCIAL RECORD REVIEW | S |
| 2026-02-25 | MALMSTROM AIR FORCE BASE | Malmstrom Air Force Base | NON-FINANCIAL RECORD REVIEW | S |
| 2026-02-13 | GLAXOSMITHKLINE BIOLOGICALS N AMERICA | Hamilton | NON-FINANCIAL RECORD REVIEW | S |
| 2026-02-12 | LIBBY GROUNDWATER SITE | Libby | NON-FINANCIAL RECORD REVIEW | S |
| 2026-02-04 | COLUMBUS PROCESSING FACILITY | Columbus | COMPLIANCE EVALUATION INSPECTION | S |
| 2026-01-29 | COLUMBUS PROCESSING FACILITY | Columbus | NON-FINANCIAL RECORD REVIEW | S |
| 2026-01-28 | JUPITER SULPHUR LLC - BILLINGS | Billings | NON-FINANCIAL RECORD REVIEW | S |
| 2026-01-26 | TALEN MONTANA LLC COLSTRIP 3 & 4 | Colstrip | NON-FINANCIAL RECORD REVIEW | S |
Figures from EPA’s RCRAInfo download.