EPA Air · stack tests by state and year
Air-emissions stack tests in Idaho, 2025
- 111Stack 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 2025; one facility can appear more than once, because this is a record of what happened rather than a list of places.
Counties in Idaho, 2025
- Ada County 41
- Nez Perce County 13
- Bonneville County 9
- Power County 9
- Caribou County 6
- Bingham County 6
- Kootenai County 5
- Canyon County 3
Idaho, other years
Air-emissions stack tests recorded in Idaho, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-02-27 | J R SIMPLOT - CALDWELL (NEW) | CALDWELL, Canyon, ID | Pass | State |
| 2025-02-27 | CLEARWATER PAPER CORP-PPD | LEWISTON, Nez Perce, ID | Pass | State |
| 2025-02-26 | J R SIMPLOT - CALDWELL (NEW) | CALDWELL, Canyon, ID | Pass | State |
| 2025-02-26 | CLEARWATER PAPER CORP-PPD | LEWISTON, Nez Perce, ID | Pass | State |
| 2025-02-25 | CLEARWATER PAPER CORP-PPD | LEWISTON, Nez Perce, ID | Pass | State |
| 2025-02-24 | CLEARWATER PAPER CORP-PPD | LEWISTON, Nez Perce, ID | Fail | State |
| 2025-02-04 | SUNTADO | BURLEY, Cassia, ID | Pass | State |
| 2025-01-29 | HESS PUMICE PRODUCTS INC | MALAD CITY, Oneida, ID | Pass | State |
| 2025-01-21 | BEAR RIVER ZEOLITE CO. | PRESTON, Franklin, ID | Pass | State |
| 2025-01-09 | RIVER ROCK SAND & GRAVEL LLC 00162 | NAMPA, Canyon, ID | Pass | State |
| 2025-01-07 | CLEARWATER PAPER CORP-PPD | LEWISTON, Nez Perce, ID | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.