EPA Air · stack tests by state and year
Air-emissions stack tests in Utah, 2026
- 51Stack 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 2026; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Utah, 2026
- Salt Lake County 12
- Duchesne County 11
- Davis County 10
- Undetermined County 8
- Emery County 3
- Morgan County 3
Utah, other years
Air-emissions stack tests recorded in Utah, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-07-10 | AMRIZE SOUTHWEST INC.- ROCKPORT AGGREGATE FACILITY/FORMERLY UTELITE | UTAH, Undetermined, UT | Pass | State |
| 2026-06-26 | AMRIZE CEMENT/FORMERLY HOLCIM (US), INC. — high-priority violation on file | MORGAN, Morgan, UT | Pass | State |
| 2026-06-23 | AMRIZE CEMENT/FORMERLY HOLCIM (US), INC. — high-priority violation on file | MORGAN, Morgan, UT | Pass | State |
| 2026-06-23 | AMRIZE CEMENT/FORMERLY HOLCIM (US), INC. — high-priority violation on file | MORGAN, Morgan, UT | Pass | State |
| 2026-05-28 | WEIR SPECIALTY PUMPS/ENVIROTECH RUBBER | SALT LAKE CITY, Salt Lake, UT | Pass | State |
| 2026-05-27 | HEBER LIGHT AND POWER COMPANY | HEBER CITY, Wasatch, UT | Pass | State |
| 2026-05-22 | HF SINCLAIR WOODS CROSS REFINERY (FORMERLY HOLLY) | WOODS CROSS, Davis, UT | Pass | State |
| 2026-05-20 | BIG WEST OIL | NORTH SALT LAKE, Davis, UT | Pass | State |
| 2026-05-20 | HF SINCLAIR WOODS CROSS REFINERY (FORMERLY HOLLY) | WOODS CROSS, Davis, UT | Pass | State |
| 2026-05-19 | BIG WEST OIL | NORTH SALT LAKE, Davis, UT | Pass | State |
| 2026-05-18 | HF SINCLAIR WOODS CROSS REFINERY (FORMERLY HOLLY) | WOODS CROSS, Davis, UT | Pass | State |
| 2026-05-11 | HF SINCLAIR WOODS CROSS REFINERY (FORMERLY HOLLY) | WOODS CROSS, Davis, UT | Pass | State |
| 2026-04-29 | HF SINCLAIR WOODS CROSS REFINERY (FORMERLY HOLLY) | WOODS CROSS, Davis, UT | Pass | State |
| 2026-04-29 | HF SINCLAIR WOODS CROSS REFINERY (FORMERLY HOLLY) | WOODS CROSS, Davis, UT | Pass | State |
| 2026-04-27 | HF SINCLAIR WOODS CROSS REFINERY (FORMERLY HOLLY) | WOODS CROSS, Davis, UT | Pass | State |
| 2026-04-23 | PACIFICORP HUNTINGTON | HUNTINGTON, Emery, UT | Pass | State |
| 2026-04-22 | MOUNTAIN WEST PIPELINE - KASTLER (FORMERLY DOMINION ENERGY) | UTAH, Undetermined, UT | Pass | State |
| 2026-04-22 | HF SINCLAIR WOODS CROSS REFINERY (FORMERLY HOLLY) | WOODS CROSS, Davis, UT | Pass | State |
| 2026-04-14 | WEIR SPECIALTY PUMPS/ENVIROTECH RUBBER | SALT LAKE CITY, Salt Lake, UT | Pass | State |
| 2026-04-13 | WEIR SPECIALTY PUMPS/ENVIROTECH RUBBER | SALT LAKE CITY, Salt Lake, UT | Pass | State |
| 2026-04-08 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2026-04-08 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2026-04-08 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2026-04-07 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2026-04-07 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2026-03-25 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2026-03-25 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2026-03-25 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2026-03-25 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2026-03-25 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2026-03-25 | PACIFICORP HUNTINGTON | HUNTINGTON, Emery, UT | Pass | State |
| 2026-03-24 | KINDER MORGAN LLC - MAIN GAS PLANT | ALTAMONT, Duchesne, UT | Pass | State |
| 2026-03-24 | PACIFICORP HUNTINGTON | HUNTINGTON, Emery, UT | Pass | State |
| 2026-03-18 | KENNECOTT MAIN STACK, SMELTER AND | BINGHAM CANYON, Salt Lake, UT | Pass | State |
| 2026-02-25 | WAPITI OPERATING LLC | UTAH, Undetermined, UT | Pass | State |
| 2026-02-25 | WAPITI OPERATING LLC | UTAH, Undetermined, UT | Pass | State |
| 2026-02-25 | WAPITI OPERATING LLC | UTAH, Undetermined, UT | Pass | State |
| 2026-02-24 | WAPITI OPERATING LLC | UTAH, Undetermined, UT | Pass | State |
| 2026-02-24 | WAPITI OPERATING LLC | UTAH, Undetermined, UT | Pass | State |
| 2026-02-24 | WAPITI OPERATING LLC | UTAH, Undetermined, UT | Pass | State |
| 2026-02-10 | TRANS-JORDAN CITIES LANDFILL | SOUTH JORDAN, Salt Lake, UT | Pass | State |
| 2026-02-04 | PACIFICORP CURRANT CREEK POWER PLANT | MONA, Juab, UT | Pass | State |
| 2026-02-03 | PACIFICORP CURRANT CREEK POWER PLANT | MONA, Juab, UT | Pass | State |
| 2026-01-15 | UNIVERSITY OF UTAH | SALT LAKE CITY, Salt Lake, UT | Pending | State |
| 2026-01-15 | UNIVERSITY OF UTAH | SALT LAKE CITY, Salt Lake, UT | Pass | State |
| 2026-01-15 | UNIVERSITY OF UTAH | SALT LAKE CITY, Salt Lake, UT | Pass | State |
| 2026-01-14 | UNIVERSITY OF UTAH | SALT LAKE CITY, Salt Lake, UT | Pass | State |
| 2026-01-13 | UNIVERSITY OF UTAH | SALT LAKE CITY, Salt Lake, UT | Pass | State |
| 2026-01-07 | GENPAK | CEDAR CITY, Iron, UT | Pass | State |
| 2026-01-07 | TRANS-JORDAN CITIES LANDFILL | SOUTH JORDAN, Salt Lake, UT | Pass | State |
| 2026-01-06 | TRANS-JORDAN CITIES LANDFILL | SOUTH JORDAN, Salt Lake, UT | Pass | State |
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 UT in 2026. It lists 51 stack tests recorded in 2026.