EPA Air · stack tests by state and year
Air-emissions stack tests in Utah, 2025
- 175Stack tests
A stack test measures what a source actually emits, at the stack, against the limit in its permit. Every stack test below was recorded against a source in Utah during 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Utah, 2025
- Undetermined County 51
- Salt Lake County 30
- Duchesne County 29
- Davis County 17
- Utah County 14
- Millard County 11
- Box Elder County 5
- Morgan County 5
- Carbon County 5
- Emery County 4
Utah, other years
Air-emissions stack tests recorded in Utah, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-30 | SOUTH UTAH VALLEY SOLID/BAYVIEW LANDFILL | ELBERTA, Utah, UT | Pass | State |
| 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 |
| 2025-12-18 | CHEVRON USA | UTAH, Undetermined, UT | Pass | State |
| 2025-12-18 | CHEVRON USA | UTAH, Undetermined, UT | Pass | State |
| 2025-12-18 | AMRIZE CEMENT/FORMERLY HOLCIM (US), INC. — high-priority violation on file | MORGAN, Morgan, UT | Pass | State |
| 2025-12-17 | AMRIZE CEMENT/FORMERLY HOLCIM (US), INC. — high-priority violation on file | MORGAN, Morgan, UT | Pass | State |
| 2025-12-16 | KENNECOTT MAIN STACK, SMELTER AND | BINGHAM CANYON, Salt Lake, UT | Pass | State |
| 2025-12-11 | KENNECOTT MAIN STACK, SMELTER AND | BINGHAM CANYON, Salt Lake, UT | Pass | State |
| 2025-12-09 | PACIFICORP HUNTER | UTAH, Undetermined, UT | Pass | State |
| 2025-12-09 | PACIFICORP HUNTER | UTAH, Undetermined, UT | Pass | State |
| 2025-12-05 | KENNECOTT MAIN STACK, SMELTER AND | BINGHAM CANYON, Salt Lake, UT | Pass | State |
| 2025-12-04 | PACIFICORP HUNTER | UTAH, Undetermined, UT | Pass | State |
| 2025-12-03 | PACIFICORP HUNTER | UTAH, Undetermined, UT | Pass | State |
| 2025-11-25 | TESORO WEST COAST/FORMER BP AMOCO | SALT LAKE CITY, Salt Lake, UT | Pass | State |
| 2025-11-20 | INTERMOUNTAIN POWER SERVICE CORPORATION | DELTA, Millard, UT | Pass | State |
| 2025-11-20 | PACIFICORP LAKESIDE (SUMMIT VINEYARD) | VINEYARD, Utah, UT | Pass | State |
| 2025-11-19 | PACIFICORP LAKESIDE (SUMMIT VINEYARD) | VINEYARD, Utah, UT | Pass | State |
| 2025-11-18 | PACIFICORP LAKESIDE (SUMMIT VINEYARD) | VINEYARD, Utah, UT | Pass | State |
| 2025-11-17 | PACIFICORP LAKESIDE (SUMMIT VINEYARD) | VINEYARD, Utah, UT | Pass | State |
| 2025-11-16 | CLEAN HARBORS ARAGONITE/SAFETY KLEEN | ARAGONITE, Tooele, UT | Pass | State |
| 2025-11-13 | PACIFICORP HUNTER | UTAH, Undetermined, 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 | CENTRAL VALLEY WATER RECLAMATION | SALT LAKE CITY, Salt Lake, UT | Pass | State |
| 2025-10-29 | COMPASS MINERALS | UTAH, Undetermined, UT | Pass | State |
| 2025-10-28 | CENTRAL VALLEY WATER RECLAMATION | SALT LAKE CITY, Salt Lake, 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 | PACIFICORP HUNTER | UTAH, Undetermined, UT | Pass | State |
| 2025-10-22 | INTERMOUNTAIN POWER SERVICE CORPORATION | DELTA, Millard, 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 |
| 2025-10-16 | NYDIG DFM LLC - DUCHESNE DATA POWER STATION (FORMERLY CRUSOE ENERGY SYSTEMS) | UPALCO, Duchesne, UT | Pass | State |
| 2025-10-15 | NYDIG DFM LLC - DUCHESNE DATA POWER STATION (FORMERLY CRUSOE ENERGY SYSTEMS) | UPALCO, Duchesne, UT | Pass | State |
| 2025-10-14 | NYDIG DFM LLC - DUCHESNE DATA POWER STATION (FORMERLY CRUSOE ENERGY SYSTEMS) | UPALCO, Duchesne, UT | Pass | State |
| 2025-10-13 | NYDIG DFM LLC - DUCHESNE DATA POWER STATION (FORMERLY CRUSOE ENERGY SYSTEMS) | UPALCO, Duchesne, UT | Pass | State |
| 2025-10-10 | NYDIG DFM LLC - DUCHESNE DATA POWER STATION (FORMERLY CRUSOE ENERGY SYSTEMS) | UPALCO, Duchesne, UT | Pass | State |
| 2025-10-09 | NYDIG DFM LLC - DUCHESNE DATA POWER STATION (FORMERLY CRUSOE ENERGY SYSTEMS) | UPALCO, Duchesne, UT | Pass | State |
| 2025-10-08 | NYDIG DFM LLC - DUCHESNE DATA POWER STATION (FORMERLY CRUSOE ENERGY SYSTEMS) | UPALCO, Duchesne, UT | Pass | State |
| 2025-10-08 | TRANS-JORDAN CITIES LANDFILL | SOUTH JORDAN, Salt Lake, UT | Pass | State |
| 2025-10-07 | NYDIG DFM LLC - DUCHESNE DATA POWER STATION (FORMERLY CRUSOE ENERGY SYSTEMS) | UPALCO, Duchesne, UT | Pass | State |
| 2025-09-30 | AMRIZE CEMENT/FORMERLY HOLCIM (US), INC. — high-priority violation on file | MORGAN, Morgan, UT | Pass | State |
| 2025-09-29 | AMRIZE CEMENT/FORMERLY HOLCIM (US), INC. — high-priority violation on file | MORGAN, Morgan, UT | Pass | State |
| 2025-09-29 | AMRIZE CEMENT/FORMERLY HOLCIM (US), INC. — high-priority violation on file | MORGAN, Morgan, UT | Pass | State |
| 2025-09-26 | INTERMOUNTAIN POWER SERVICE CORPORATION | DELTA, Millard, UT | Pass | State |
| 2025-09-25 | URBAN OIL & GAS HELPER | PRICE, Carbon, UT | Pass | State |
| 2025-09-25 | URBAN OIL & GAS HELPER | PRICE, Carbon, UT | Pass | State |
| 2025-09-25 | URBAN OIL & GAS HELPER | PRICE, Carbon, UT | Pass | State |
| 2025-09-25 | URBAN OIL & GAS HELPER | PRICE, Carbon, UT | Pass | State |
| 2025-09-25 | PACIFICORP LAKESIDE (SUMMIT VINEYARD) | VINEYARD, Utah, UT | Pass | State |
| 2025-09-25 | PACIFICORP LAKESIDE (SUMMIT VINEYARD) | VINEYARD, Utah, UT | Pass | State |
| 2025-09-24 | PACIFICORP LAKESIDE (SUMMIT VINEYARD) | VINEYARD, Utah, UT | Pass | State |
| 2025-09-24 | PACIFICORP LAKESIDE (SUMMIT VINEYARD) | VINEYARD, Utah, UT | Pass | State |
| 2025-09-23 | PACIFICORP LAKESIDE (SUMMIT VINEYARD) | VINEYARD, Utah, UT | Pass | State |
| 2025-09-23 | PACIFICORP LAKESIDE (SUMMIT VINEYARD) | VINEYARD, Utah, UT | Pass | State |
| 2025-09-22 | PACIFICORP LAKESIDE (SUMMIT VINEYARD) | VINEYARD, Utah, UT | Pass | State |
| 2025-09-22 | PACIFICORP LAKESIDE (SUMMIT VINEYARD) | VINEYARD, Utah, UT | Pass | State |
| 2025-09-11 | NUCOR STEEL | PLYMOUTH, Box Elder, UT | Pass | State |
| 2025-09-11 | INTERMOUNTAIN POWER SERVICE CORPORATION | DELTA, Millard, UT | Pass | State |
| 2025-09-05 | NUCOR STEEL | PLYMOUTH, Box Elder, UT | Pass | State |
| 2025-09-04 | NUCOR STEEL | PLYMOUTH, Box Elder, UT | Pass | State |
| 2025-08-28 | INTERMOUNTAIN POWER SERVICE CORPORATION | DELTA, Millard, UT | Pass | State |
| 2025-08-22 | CHEVRON USA | UTAH, Undetermined, UT | Pass | State |
| 2025-08-22 | CHEVRON USA | UTAH, Undetermined, UT | Pass | State |
| 2025-08-21 | CHEVRON USA | UTAH, Undetermined, UT | Pass | State |
| 2025-08-19 | CHEVRON USA | UTAH, Undetermined, UT | Pass | State |
| 2025-08-15 | CHEVRON USA | UTAH, Undetermined, UT | Pass | State |
| 2025-08-14 | GRAYMONT WESTERN (CONTINENTAL LIME) | DELTA, Millard, UT | Pass | State |
| 2025-08-13 | KINDER MORGAN LLC - ALTAMONT EAST | ALTAMONT, Duchesne, 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 |
| 2025-08-11 | CHEVRON USA | UTAH, Undetermined, UT | Pass | State |
| 2025-08-06 | HF SINCLAIR WOODS CROSS REFINERY (FORMERLY HOLLY) | WOODS CROSS, Davis, UT | Pass | State |
| 2025-08-05 | KINDER MORGAN LLC - WEST STATION | DUCHESNE, Duchesne, UT | Pass | State |
| 2025-08-05 | KINDER MORGAN LLC - WEST STATION | DUCHESNE, Duchesne, UT | Pass | State |
| 2025-07-29 | MURRAY CITY POWER DEPARTMENT | MURRAY, Salt Lake, UT | Pass | State |
| 2025-07-23 | HF SINCLAIR WOODS CROSS REFINERY (FORMERLY HOLLY) | WOODS CROSS, Davis, UT | N/A | State |
| 2025-07-22 | HF SINCLAIR WOODS CROSS REFINERY (FORMERLY HOLLY) | WOODS CROSS, Davis, UT | Pass | State |
| 2025-07-17 | KINDER MORGAN ALTAMONT - SOUTH | DUCHESNE, Duchesne, UT | Pass | State |
| 2025-07-16 | KINDER MORGAN ALTAMONT - SOUTH | DUCHESNE, Duchesne, UT | Pass | State |
| 2025-07-16 | KINDER MORGAN ALTAMONT - SOUTH | DUCHESNE, Duchesne, UT | Pass | State |
| 2025-07-15 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2025-07-15 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2025-06-19 | INTERSTATE BRICK | WEST JORDAN, Salt Lake, UT | Pass | State |
Page 1 of 2NextPage 2
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.