EPA Air · stack tests by state, industry and year
Pipeline transportation (NAICS 4862): stack tests in Idaho, 2026
- 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 2026 at a Idaho source whose primary industry code is NAICS 4862. A facility filing more than one industry code is counted under the first one on its record.
Pipeline transportation (NAICS 4862) in Idaho, other years
Other industries in Idaho, 2026
- Mining and quarrying (NAICS 2123) 68
- Chemical manufacturing (NAICS 3253) 5
- Petroleum and coal products manufacturing (NAICS 3241) 5
- Paper manufacturing (NAICS 3221) 4
Air-emissions stack tests recorded in Idaho, 2026
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 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 |
| 2026-02-27 | 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 |
| 2026-02-19 | GAS TRANSMISSION NORTHWEST - COMPRESSOR STATION 04 - SANDPOINT — high-priority violation on file | SANDPOINT, Bonner, ID | 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.