Clean Air Act stationary source · ICIS-AIR WY0000005602100002
CHEYENNE PLANT (DYNO NOBEL INC), Cheyenne, WY: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- Addressed-StateCurrent violation status, as filed
- 9Compliance evaluations since January 1, 2017
- 1High-priority violations since January 1, 2017
- 0Formal enforcement actions since January 1, 2017
CHEYENNE PLANT (DYNO NOBEL INC), at 8305 OTTO ROAD, Cheyenne in Laramie County, Wyoming, is an operating major 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 “Addressed-State”. 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 | CHEYENNE PLANT (DYNO NOBEL INC) |
|---|---|
| ICIS-AIR ID | WY0000005602100002 |
| EPA facility registry ID | 110000468066 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | Addressed-State |
| Address | 8305 OTTO ROAD, Cheyenne, WY 82001 |
| County | Laramie County |
| In a nonattainment county | No (EPA Green Book) |
| Industry (NAICS) | Chemical manufacturing (NAICS 3253) |
| SIC code | 2813 |
| EPA region | 08 |
Cited to the EPA ICIS-AIR facility file (ECHO download).
Programs and pollutants
Velarion’s copy of EPA’s ICIS-AIR download does not include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs CHEYENNE PLANT (DYNO NOBEL INC) 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
- 9Evaluations since January 1, 2017
- 9Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| April 22, 2026 | FCE On-Site | State | State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards; Title V Permits |
| March 18, 2024 | FCE On-Site | State | Title V Permits |
| March 20, 2023 | FCE On-Site | State | Title V Permits |
| March 22, 2022 | FCE On-Site | State | Title V Permits |
| February 5, 2021 | FCE On-Site | State | Title V Permits |
| February 13, 2020 | FCE On-Site | State | Title V Permits |
| January 17, 2019 | FCE On-Site | State | Title V Permits |
| November 28, 2017 | FCE On-Site | State | Title V Permits |
| February 2, 2017 | FCE On-Site | State | Title V Permits |
Violations
- 1Violation determinations since January 1, 2017
- 1Of 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.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| February 9, 2026 | HPV day-zero determination | State | Title V Permits |
Enforcement and penalties
0 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.
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| May 29, 2026 | Notice of Violation | State |
Stack tests
- 32Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| May 19, 2026 | Pass | State |
| May 19, 2026 | Pass | State |
| May 19, 2026 | Pass | State |
| May 19, 2026 | Pass | State |
| May 19, 2026 | Pass | State |
| May 19, 2026 | Pass | State |
| May 19, 2026 | Pass | State |
| May 19, 2026 | Pass | State |
| September 11, 2025 | Pass | State |
| September 11, 2025 | Pass | State |
| September 11, 2025 | Pass | State |
| September 11, 2024 | Pass | State |
| September 11, 2024 | Pass | State |
| September 11, 2024 | Pass | State |
| May 9, 2024 | Pass | State |
| May 9, 2024 | Pass | State |
| May 9, 2024 | Pass | State |
| May 9, 2024 | Pass | State |
| September 20, 2023 | Pass | State |
| September 20, 2023 | Pass | State |
| September 20, 2023 | Pass | State |
| April 28, 2023 | Pass | State |
| November 9, 2022 | Pending | State |
| November 9, 2022 | Pass | State |
| May 12, 2022 | Pass | State |
| April 14, 2022 | Pass | State |
| October 6, 2021 | Pass | State |
| April 15, 2021 | Pass | State |
| September 30, 2020 | Pass | State |
| October 9, 2019 | Pass | State |
| October 10, 2018 | Pass | State |
| October 27, 2017 | Pass | 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 110000468066 there.
Nearby on the register
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- Air-emissions sources in Wyoming
- Every source record in Wyoming, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.