Nlmk Indiana
6500 S. Boundary Road, Portage, IN 46368, Porter County
A manufacturing facility in Portage, Indiana, listed in EPA records under iron and steel mills and ferroalloy manufacturing (NAICS 331110). It is one of 3,706 active manufacturing facilities in EPA records in Indiana.
- Industry
- Primary metals
- NAICS 331
- TRI reporter
- Yes
- Inspections, 5 yr
- 8
- EPA registry ID
- 110000398212
- Revised
- November 1, 2026
What's made here
- Iron and Steel Mills and Ferroalloy Manufacturing (NAICS 331110)
Public EPA records
| Toxics Release Inventory | Reports to the TRI (facility ID 46368BTSTL6500S). |
|---|---|
| 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 large quantity generator of hazardous waste (1,000 kg or more a month). |
| Greenhouse gas reporting | Reports to the Greenhouse Gas Reporting Program. |
| Inspections | 8 in the last five years; most recent October 15, 2026. |
EPA ECHO, November 1, 2026; not a rating. EPA report ยท About these records