EPA Air · stack tests by state, industry and year
Pipeline transportation (NAICS 4862): stack tests in Montana, 2025
- 54Stack 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 2025 at a Montana 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 Montana, other years
Other industries in Montana, 2025
- Petroleum and coal products manufacturing (NAICS 3241) 42
- Utilities (NAICS 2211) 42
- Oil and gas extraction (NAICS 2111) 12
- Food manufacturing (NAICS 3113) 5
- National security and international affairs (NAICS 9281) 3
- Primary metal manufacturing (NAICS 3314) 3
Air-emissions stack tests recorded in Montana, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-12-30 | WILLISTON BASIN - MONARCH STATION | BAKER, Fallon, MT | Pass | State |
| 2025-12-30 | WILLISTON BASIN - MONARCH STATION | BAKER, Fallon, MT | Pass | State |
| 2025-12-16 | BAKKEN GATHERING PLANT | SIDNEY, Richland, MT | Pass | State |
| 2025-12-16 | BAKKEN GATHERING PLANT | SIDNEY, Richland, MT | Pass | State |
| 2025-12-16 | BAKKEN GATHERING PLANT | SIDNEY, Richland, MT | Pass | State |
| 2025-11-25 | WILLISTON BASIN - FORT PECK STATION | NASHUA, Valley, MT | Pass | State |
| 2025-11-25 | WILLISTON BASIN - FORT PECK STATION | NASHUA, Valley, MT | Pass | State |
| 2025-09-12 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2025-09-12 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2025-09-12 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2025-09-12 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2025-09-12 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2025-09-12 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2025-09-12 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2025-09-12 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2025-09-12 | BLAINE COUNTY #1 | CHINOOK, Blaine, MT | Pass | State |
| 2025-09-12 | BAKKEN GATHERING PLANT | SIDNEY, Richland, MT | Pass | State |
| 2025-09-12 | BAKKEN GATHERING PLANT | SIDNEY, Richland, MT | Pass | State |
| 2025-08-27 | BAKKEN GATHERING PLANT | SIDNEY, Richland, MT | Pass | State |
| 2025-08-27 | BAKKEN GATHERING PLANT | SIDNEY, Richland, MT | Pass | State |
| 2025-08-26 | AUGUSTA MAIN LINE #3 (STA 051) | AUGUSTA, Lewis and Clark, MT | Pass | State |
| 2025-08-26 | AUGUSTA MAIN LINE #3 (STA 051) | AUGUSTA, Lewis and Clark, MT | Pass | State |
| 2025-07-31 | CHARLIE CREEK COMPRESSOR STATION | LAMBERT, Richland, MT | Pass | State |
| 2025-07-21 | WILLISTON BASIN - HATHAWAY STATION | HATHAWAY, Rosebud, MT | Pass | State |
| 2025-07-21 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2025-07-21 | WILLISTON BASIN - FORT PECK STATION | NASHUA, Valley, MT | Pass | State |
| 2025-05-15 | DRY CREEK FIELD STATION 056 | RED LODGE, Carbon, MT | Pass | State |
| 2025-05-14 | WILLISTON BASIN - HATHAWAY STATION | HATHAWAY, Rosebud, MT | Pass | State |
| 2025-05-14 | WILLISTON BASIN - FORT PECK STATION | NASHUA, Valley, MT | Pass | State |
| 2025-04-28 | WILLISTON BASIN - LITTLE BEAVER | BAKER, Fallon, MT | Pass | State |
| 2025-04-28 | WILLISTON BASIN - LITTLE BEAVER | BAKER, Fallon, MT | Pass | State |
| 2025-04-09 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2025-04-09 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2025-04-09 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2025-03-28 | WILLISTON BASIN - MONARCH STATION | BAKER, Fallon, MT | Pass | State |
| 2025-03-10 | COBB STORAGE FIELD STATION 017 | CUT BANK, Glacier, MT | Pass | State |
| 2025-03-10 | COBB STORAGE FIELD STATION 017 | CUT BANK, Glacier, MT | Pass | State |
| 2025-03-10 | COBB STORAGE FIELD STATION 017 | CUT BANK, Glacier, MT | Pass | State |
| 2025-03-10 | COBB STORAGE FIELD STATION 017 | CUT BANK, Glacier, MT | Pass | State |
| 2025-03-10 | COBB STORAGE FIELD STATION 017 | CUT BANK, Glacier, MT | Pass | State |
| 2025-03-10 | COBB STORAGE FIELD STATION 017 | CUT BANK, Glacier, MT | Pass | State |
| 2025-03-10 | COBB STORAGE FIELD STATION 017 | CUT BANK, Glacier, MT | Pass | State |
| 2025-03-10 | COBB STORAGE FIELD STATION 017 | CUT BANK, Glacier, MT | Pass | State |
| 2025-03-10 | COBB STORAGE FIELD STATION 017 | CUT BANK, Glacier, MT | Pass | State |
| 2025-03-10 | COBB STORAGE FIELD STATION 017 | CUT BANK, Glacier, MT | Pass | State |
| 2025-02-25 | AUGUSTA MAIN LINE #3 (STA 051) | AUGUSTA, Lewis and Clark, MT | Pass | State |
| 2025-02-25 | AUGUSTA MAIN LINE #3 (STA 051) | AUGUSTA, Lewis and Clark, MT | Pass | State |
| 2025-02-25 | AUGUSTA MAIN LINE #3 (STA 051) | AUGUSTA, Lewis and Clark, MT | Pass | State |
| 2025-02-25 | AUGUSTA MAIN LINE #3 (STA 051) | AUGUSTA, Lewis and Clark, MT | Pass | State |
| 2025-01-27 | WILLISTON BASIN - FORT PECK STATION | NASHUA, Valley, MT | Pass | State |
| 2025-01-07 | WILLISTON BASIN - LITTLE BEAVER | BAKER, Fallon, MT | Pass | State |
| 2025-01-07 | WILLISTON BASIN - LITTLE BEAVER | BAKER, Fallon, MT | Pass | State |
| 2025-01-07 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | Pass | State |
| 2025-01-07 | WILLISTON BASIN - CABIN CREEK | BAKER, Fallon, MT | 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.