Rocky Mountain Steel Mill
2100 South Freeway, Pueblo, CO 81004, Pueblo County
A manufacturing facility in Pueblo, Colorado, listed in EPA records under iron and steel mills and ferroalloy manufacturing (NAICS 331110) and also all other petroleum and coal products manufacturing and fabricated structural metal manufacturing. It is one of 1,833 active manufacturing facilities in EPA records in Colorado, 56 of them in Pueblo.
- Industry
- Primary metals
- NAICS 331
- TRI reporter
- Yes
- Inspections, 5 yr
- 37
- EPA registry ID
- 110000467833
- Revised
- November 1, 2026
What's made here
- Iron and Steel Mills and Ferroalloy Manufacturing (NAICS 331110)
- All Other Petroleum and Coal Products Manufacturing (NAICS 324199)
- Fabricated Structural Metal Manufacturing (NAICS 332312)
Public EPA records
| Toxics Release Inventory | Reports to the TRI (facility ID 81004CFSTL225CA). |
|---|---|
| Clean Air Act | Listed as a major source of air emissions. |
| Clean Water Act | A major water discharge permit (NPDES). |
| Hazardous waste (RCRA) | Listed as a large quantity generator of hazardous waste (1,000 kg or more a month); and a site with a past hazardous waste treatment, storage or disposal unit (legacy TSDF). |
| Greenhouse gas reporting | Reports to the Greenhouse Gas Reporting Program. |
| Inspections | 37 in the last five years; most recent July 29, 2026. |
EPA ECHO, November 1, 2026; not a rating. EPA report ยท About these records