Clean Air Act stationary source · ICIS-AIR ID0000001677700533
KNIFE RIVER CORP - MTN WEST 00533, Boise, ID: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Synthetic minor sourceEmissions classification
- No Violation IdentifiedCurrent violation status, as filed
- 4Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 1Formal enforcement actions since January 1, 2017
KNIFE RIVER CORP - MTN WEST 00533, at 5450 W GOWEN RD, Boise in Ada County, Idaho, is an operating synthetic minor source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “No Violation Identified”. Ada County is on EPA’s Green Book list of areas that do not meet a national air quality standard. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.
Identity
| Facility as filed | KNIFE RIVER CORP - MTN WEST 00533 |
|---|---|
| ICIS-AIR ID | ID0000001677700533 |
| EPA facility registry ID | 110064845477 |
| Operating status | Operating |
| Emissions classification | Synthetic minor source |
| Current violation status (ICIS-AIR high-priority violation field) | No Violation Identified |
| Address | 5450 W GOWEN RD, Boise, ID 83709 |
| County | Ada County |
| In a nonattainment county | Yes (EPA Green Book) |
| Industry (NAICS) | Petroleum and coal products manufacturing (NAICS 3241) |
| EPA region | 10 |
Cited to the EPA ICIS-AIR facility file (ECHO download).
Programs and pollutants
Velarion’s copy of EPA’s ICIS-AIR download does not yet include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs KNIFE RIVER CORP - MTN WEST 00533 is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.
Compliance evaluations
- 4Evaluations since January 1, 2017
- 0Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| July 30, 2025 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| March 31, 2023 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| January 29, 2021 | PCE Off-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| July 10, 2019 | PCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
Violations
- 0Violation determinations since January 1, 2017
- 0Of them high-priority
A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.
EPA’s violation history file holds no violation for ICIS-AIR ID0000001677700533 since January 1, 2017.
Enforcement and penalties
1 formal enforcement actions since January 1, 2017, 0 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.
| Date | What EPA recorded | Agency | Penalty, as filed |
|---|---|---|---|
| December 21, 2020 | Administrative Order | State | $0 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| July 24, 2019 | Warning Letter | State |
Stack tests
- 2Stack tests since January 1, 2017
- 1Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| July 13, 2021 | Pass | State |
| September 1, 2020 | Fail | State |
Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.
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How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110064845477 there.
Nearby on the register
- Air-emissions sources in Ada County
- Every source record in Ada County, A to Z
- Air-emissions sources in Idaho
- Every source record in Idaho, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.