Ash Grove Cement Co - Montana City Plant
100 Mt Hwy 518, Clancy, MT 59634, Jefferson County
A manufacturing facility in Clancy, Montana, listed in EPA records under cement manufacturing (NAICS 327310). It is one of 205 active manufacturing facilities in EPA records in Montana.
- Industry
- Glass, cement and stone
- NAICS 327
- TRI reporter
- Yes
- Inspections, 5 yr
- 4
- EPA registry ID
- 110000595197
- Revised
- November 1, 2026
What's made here
- Cement Manufacturing (NAICS 327310)
Public EPA records
| Toxics Release Inventory | Reports to the TRI (facility ID 59634SHGRV100HW). |
|---|---|
| Clean Air Act | Listed as a major source of air emissions. |
| Clean Water Act | A non-major water discharge permit (NPDES). |
| Hazardous waste (RCRA) | Listed as a very small quantity generator of hazardous waste (under 100 kg a month). |
| Greenhouse gas reporting | Reports to the Greenhouse Gas Reporting Program. |
| Inspections | 4 in the last five years; most recent June 24, 2026. |
EPA ECHO, November 1, 2026; not a rating. EPA report ยท About these records