Knife River

What they make

Where it is

Location not verified — this address could not be matched to Census TIGER, so the facility is not placed on the map.

Other plants nearby

No other listed facility within 40 km shares this one’s four-digit industry code, or this record has no coordinates to measure from.

Also at this address

No other federal record shares this street address.

Where this record comes from

2 sources hold this plant, and 4 fields on this page come from them. Each line is one agency’s own record of it: the identifier it is filed under, whether that record shows the plant operating or only that it exists, and when the register first and last saw it there.

EPA cross-references this facility in AIR, AIRS/AFS · EPA site type PORTABLE.

• EPA ECHO compliance recordsOPERATING
  first seen AUG 2017 · last seen AUG 2017
• EPA Facility Registry ServiceEXISTENCE
  Record 110038875839 · first seen NOV 2014 · last seen NOV 2014

What each source says

Every field below, as each source filed it. The value this page shows is marked; where the sources disagree, the field says so. Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

Name

EPA: KNIFE RIVER · OCT 2026

Street address

EPA: PORTABLE/POLK COUNTY · OCT 2026

City

EPA: POLK COUNTY · OCT 2026

State

EPA: IA · OCT 2026