EPA Air · stack tests by state, industry and year
Mining and quarrying (NAICS 2123): stack tests in Utah, 2025
- 6Stack 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 2123. A facility filing more than one industry code is counted under the first one on its record.
Mining and quarrying (NAICS 2123) in Utah, other years
Other industries in Utah, 2025
- Oil and gas extraction (NAICS 2111) 36
- NAICS 9999 31
- 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
- Educational services (NAICS 6113) 5
- Primary metal manufacturing (NAICS 3311) 3
Air-emissions stack tests recorded in Utah, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-08-14 | GRAYMONT WESTERN (CONTINENTAL LIME) | DELTA, Millard, UT | Pass | State |
| 2025-08-13 | GRAYMONT WESTERN (CONTINENTAL LIME) | DELTA, Millard, UT | Pass | State |
| 2025-08-13 | GRAYMONT WESTERN (CONTINENTAL LIME) | DELTA, Millard, UT | Pass | State |
| 2025-05-21 | GRAYMONT WESTERN (CONTINENTAL LIME) | DELTA, Millard, UT | Pass | State |
| 2025-05-21 | GRAYMONT WESTERN (CONTINENTAL LIME) | DELTA, Millard, UT | Pass | State |
| 2025-05-20 | GRAYMONT WESTERN (CONTINENTAL LIME) | DELTA, Millard, 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.