EPA Air · stack tests by state and year
Air-emissions stack tests in Idaho, 2026
- 96Stack 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 Idaho 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 Idaho, 2026
Idaho, other years
Air-emissions stack tests recorded in Idaho, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2026-08-21 | HK CONTRACTORS INC 00079 | IDAHO FALLS, Bonneville, ID | Pending | State |
| 2026-08-21 | HK CONTRACTORS INC 00121 | IDAHO FALLS, Bonneville, ID | Pending | State |
| 2026-08-21 | HK CONTRACTORS INC 00168 | IDAHO FALLS, Bonneville, ID | Pending | State |
| 2026-08-21 | HK CONTRACTORS 00413 | IDAHO FALLS, Bonneville, ID | Pending | State |
| 2026-08-21 | HK CONTRACTORS INC 00463 | IDAHO FALLS, Bonneville, ID | Pending | State |
| 2026-08-21 | HK CONTRACTORS INC 00480 | IDAHO FALLS, Bonneville, ID | Pending | State |
| 2026-08-21 | HK CONTRACTORS 00495 | IDAHO FALLS, Bonneville, ID | Pending | State |
| 2026-08-21 | HK CONTRACTORS, INC. - 00739 | IDAHO FALLS, Bonneville, ID | Pending | State |
| 2026-07-31 | BATEMAN BROS CONSTRUCTION 00698 | SHELLEY, Bingham, ID | Pending | State |
| 2026-07-22 | STAKER PARSON COMPANY DBA IDAHO MATERIALS & CONSTRUCTION 00322 | NAMPA, Canyon, ID | Pending | State |
| 2026-07-21 | SUNCORE CONSTRUCTION & MATERIALS 00721 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-07-17 | HK CONTRACTORS INC 00079 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-07-17 | HK CONTRACTORS INC 00121 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-07-17 | HK CONTRACTORS INC 00168 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-07-17 | HK CONTRACTORS 00413 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-07-17 | HK CONTRACTORS INC 00463 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-07-17 | HK CONTRACTORS INC 00480 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-07-17 | HK CONTRACTORS 00495 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-07-16 | CLEARWATER PAPER CORP-PPD | LEWISTON, Nez Perce, ID | Pass | State |
| 2026-07-16 | SUNCORE CONSTRUCTION & MATERIALS 00552 | IDAHO FALLS, Bonneville, ID | Pending | State |
| 2026-07-14 | VALLEY PAVING & ASPHALT 00086 | COTTONWOOD, Idaho, ID | Pending | State |
| 2026-07-09 | RATHDRUM POWER LLC | RATHDRUM, Kootenai, ID | Pending | State |
| 2026-07-02 | PREMIER LLC - PLEASANT VALLEY ROAD | ADA COUNTY, Ada, ID | Pending | State |
| 2026-06-26 | BRETT PRICE EXCAVATING INC 00719 | RIGBY, Jefferson, ID | Pending | State |
| 2026-06-25 | STAKER AND PARSON COMPANIES DBA IDAHO MATERIALS AND CONSTRUCTION 00407 | MERIDIAN, Ada, ID | Pass | State |
| 2026-06-24 | STAKER AND PARSON COMPANIES DBA IDAHO MATERIALS AND CONSTRUCTION 00406 | MERIDIAN, Ada, ID | Pass | State |
| 2026-06-17 | SUPERIOR BLASTING INC 00708 | BOISE, Ada, ID | Pass | State |
| 2026-06-17 | SUNCORE CONSTRUCTION & MATERIALS 00722 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-06-16 | HK CONTRACTORS INC 00079 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-06-16 | HK CONTRACTORS INC 00121 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-06-16 | HK CONTRACTORS INC 00168 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-06-16 | HK CONTRACTORS 00413 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-06-16 | HK CONTRACTORS INC 00463 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-06-16 | HK CONTRACTORS INC 00480 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-06-16 | HK CONTRACTORS 00495 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-06-02 | KNIFE RIVER CORP - MTN WEST 00051 | BOISE, Ada, ID | Pass | State |
| 2026-05-20 | DF-AP#1, LLC - BIG SKY WEST DAIRY | GOODING, Gooding, ID | Pending | State |
| 2026-05-15 | TMC INC | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-05-12 | HK CONTRACTORS INC 00079 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-05-12 | HK CONTRACTORS INC 00121 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-05-12 | HK CONTRACTORS INC 00168 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-05-12 | HK CONTRACTORS 00413 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-05-12 | HK CONTRACTORS INC 00463 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-05-12 | HK CONTRACTORS INC 00480 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-05-12 | HK CONTRACTORS 00495 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-30 | WESTERN CONSTRUCTION - BOISE | BOISE, Ada, ID | Pass | State |
| 2026-04-30 | WESTERN CONSTRUCTION 00098 | BOISE, Ada, ID | Pass | State |
| 2026-04-30 | WESTERN CONSTRUCTION 00604 | BOISE, Ada, ID | Pass | State |
| 2026-04-30 | WESTERN CONSTRUCTION 00605 | BOISE, Ada, ID | Pass | State |
| 2026-04-30 | WESTERN CONSTRUCTION INC 00680 | BOISE, Ada, ID | Pass | State |
| 2026-04-30 | WESTERN CONSTRUCTION INC 00682 | BOISE, Ada, ID | Pass | State |
| 2026-04-30 | WESTERN CONSTRUCTION INC 00683 | BOISE, Ada, ID | Pass | State |
| 2026-04-29 | STIMSON LUMBER COMPANY PRIEST RIVER | PRIEST RIVER, Bonner, ID | Pass | State |
| 2026-04-29 | HK CONTRACTORS INC 00079 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-29 | HK CONTRACTORS INC 00121 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-29 | HK CONTRACTORS INC 00168 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-29 | HK CONTRACTORS 00413 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-29 | HK CONTRACTORS INC 00463 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-29 | HK CONTRACTORS INC 00480 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-29 | HK CONTRACTORS 00495 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-23 | RUVEON - SODA SPRINGS PLANT (TV FACILITY) | SODA SPRINGS, Caribou, ID | Pass | State |
| 2026-04-21 | LURRE CONSTRUCTION INC 00295 | CALDWELL, Canyon, ID | Pass | State |
| 2026-04-20 | NORTHWEST PIPELINE GP OWYHEE | RIDDLE, Owyhee, ID | Pass | State |
| 2026-04-17 | NORTHWEST PIPELINE LLC LAVA HOT SPRINGS | TOPAZ (HISTORICAL), Bannock, ID | Pass | State |
| 2026-04-15 | NORTHWEST PIPELINE LLC PEGRAM | PEGRAM, Bear Lake, ID | Pass | State |
| 2026-04-10 | HK CONTRACTORS INC 00079 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-10 | HK CONTRACTORS INC 00121 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-10 | HK CONTRACTORS INC 00168 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-10 | HK CONTRACTORS 00413 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-10 | HK CONTRACTORS INC 00463 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-10 | HK CONTRACTORS INC 00480 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-10 | HK CONTRACTORS 00495 | IDAHO FALLS, Bonneville, ID | Pass | State |
| 2026-04-09 | CLEARWATER PAPER CORP-PPD | LEWISTON, Nez Perce, ID | Pass | State |
| 2026-04-09 | BRIDGER ROCK 00705 | PRESTON, Franklin, ID | Pass | State |
| 2026-04-07 | J R SIMPLOT COMPANY-DON SIDING POCATELLO — high-priority violation on file | POCATELLO, Power, ID | Pass | State |
| 2026-04-06 | J R SIMPLOT COMPANY-DON SIDING POCATELLO — high-priority violation on file | POCATELLO, Power, ID | Pass | State |
| 2026-04-02 | J R SIMPLOT COMPANY-DON SIDING POCATELLO — high-priority violation on file | POCATELLO, Power, ID | Pass | State |
| 2026-03-25 | CLEARWATER PAPER CORP-PPD | LEWISTON, Nez Perce, ID | Pass | State |
| 2026-03-24 | STAKER AND PARSON COMPANIES DBA IDAHO MATERIALS AND CONSTRUCTION 00407 | MERIDIAN, Ada, ID | Pass | State |
| 2026-03-18 | J R SIMPLOT COMPANY-DON SIDING POCATELLO — high-priority violation on file | POCATELLO, Power, ID | Pass | State |
| 2026-03-12 | H & B CRUSHING 00380 | KUNA, Ada, ID | Pass | State |
| 2026-03-12 | H & B CRUSHING 00595 | KUNA, Ada, ID | Pending | State |
| 2026-03-12 | H & B CRUSHING 00596 | KUNA, Ada, ID | Pass | State |
| 2026-03-12 | H & B CRUSHING 00597 | KUNA, Ada, ID | Pass | State |
| 2026-03-12 | H & B CRUSHING 00598 | KUNA, Ada, ID | Pass | State |
| 2026-03-12 | H & B CRUSHING 00615 | KUNA, Ada, ID | Pass | State |
| 2026-03-11 | J R SIMPLOT COMPANY-DON SIDING POCATELLO — high-priority violation on file | POCATELLO, Power, ID | Pass | State |
| 2026-03-03 | PREMIER LLC 00706 | EAGLE, Ada, ID | Pass | State |
| 2026-02-27 | NORTHWEST PIPELINE LLC SODA SPRINGS | GEORGETOWN, Bear Lake, ID | Pass | State |
| 2026-02-26 | NORTHWEST PIPELINE LLC SODA SPRINGS | GEORGETOWN, Bear Lake, ID | Pass | State |
| 2026-02-24 | FORT HALL MINE ROAD LANDFILL | POCATELLO, Bannock, ID | Pass | State |
| 2026-02-19 | GAS TRANSMISSION NORTHWEST - COMPRESSOR STATION 04 - SANDPOINT — high-priority violation on file | SANDPOINT, Bonner, ID | Pass | State |
| 2026-02-03 | BRIGHAM YOUNG UNIVERSITY IDAHO — high-priority violation on file | REXBURG, Madison, ID | Pass | State |
| 2026-01-29 | PICO ENERGY LLC | JEROME, Jerome, ID | Pass | State |
| 2026-01-19 | CLEARWATER PAPER CORP-PPD | LEWISTON, Nez Perce, ID | Pass | State |
| 2026-01-16 | IDAHO FALLS POWER | IDAHO FALLS, Bonneville, ID | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.