EPA Air · stack tests by state, industry and year
NAICS 9999: stack tests in Utah, 2025
- 31Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row is one stack test recorded during 2025 at a Utah source whose primary industry code is NAICS 9999. A facility filing more than one industry code is counted under the first one on its record.
NAICS 9999 in Utah, other years
Other industries in Utah, 2025
- Oil and gas extraction (NAICS 2111) 36
- Utilities (NAICS 2211) 25
- Petroleum and coal products manufacturing (NAICS 3241) 23
- Nonmetallic mineral product manufacturing (NAICS 3273) 16
- Utilities (NAICS 2212) 10
- Waste management and remediation (NAICS 5622) 7
- Primary metal manufacturing (NAICS 3314) 6
- Mining and quarrying (NAICS 2123) 6
- Educational services (NAICS 6113) 5
- Primary metal manufacturing (NAICS 3311) 3
Air-emissions stack tests recorded in Utah, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-19 | NORTHRUP GRUMMAN SYSTEMS - PROMONTORY (FORMERLY ATK) | PROMONTORY (HISTORICAL), Box Elder, UT | Pass | State |
| 2025-12-18 | NORTHRUP GRUMMAN SYSTEMS - PROMONTORY (FORMERLY ATK) | PROMONTORY (HISTORICAL), Box Elder, UT | Pass | State |
| 2025-11-05 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-11-04 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-11-04 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-31 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-31 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-30 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-30 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-30 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-29 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-28 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-28 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-28 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-27 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-27 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-24 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-24 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-24 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-23 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-23 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-23 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-22 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-21 | MURRAY CITY POWER DEPARTMENT | MURRAY, Salt Lake, UT | Pass | State |
| 2025-07-29 | MURRAY CITY POWER DEPARTMENT | MURRAY, Salt Lake, UT | Pass | State |
| 2025-04-28 | PACIFICORP HUNTINGTON | HUNTINGTON, Emery, UT | Pass | State |
| 2025-04-25 | PACIFICORP HUNTINGTON | HUNTINGTON, Emery, UT | Pass | State |
| 2025-03-27 | PACIFICORP HUNTINGTON | HUNTINGTON, Emery, UT | Pass | State |
| 2025-03-25 | PACIFICORP HUNTINGTON | HUNTINGTON, Emery, UT | Pass | State |
| 2025-01-08 | PACIFICORP CURRANT CREEK POWER PLANT | MONA, Juab, UT | Pass | State |
| 2025-01-07 | PACIFICORP CURRANT CREEK POWER PLANT | MONA, Juab, UT | Pass | State |
Primary NAICS code as filed on the facility record; dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.
What this page shows
This page covers Clean Air Act facilities in the EPA air register with stack tests in state UT under NAICS industry 9999 for 2025. It lists 31 stack tests recorded in 2025.