Knife River Mountain West

What they make

Where it is

Other plants nearby

Every listed plant in Ada County

Also at this address

No other federal record shares this street address.

Where this record comes from

3 sources hold this plant, and 6 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, FARR, NPDES, TRIS · EPA site type STATIONARY.

• EPA ECHO compliance recordsOPERATING
  first seen JUN 2025 · last seen JUN 2025
• EPA Toxics Release InventoryOPERATING
  first seen DEC 2023 · last seen DEC 2024
• EPA Facility Registry ServiceEXISTENCE
  Record 110064845477 · first seen AUG 2018 · last seen AUG 2018

IN ADA COUNTY5 other plants share this one’s industry (Petroleum and Coal Products Manufacturing, NAICS 3241); 0 of them have a size band on record.

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 MOUNTAIN WEST · OCT 2026

Street address

EPA: 5450 W GOWEN RD · OCT 2026

City

EPA: BOISE · OCT 2026

State

EPA: ID · OCT 2026

Coordinates

EPA: 43.559908,-116.251295 · OCT 2026

State business registration

OR SOS: KNIFE RIVER CORPORATION - MOUNTAIN WEST, registered with the Oregon Secretary of State, Corporation Division; Corporation formed in Delaware; registered 2018-03-06; active · MAR 2018