EPA Air · stack tests by state and year
Air-emissions stack tests in Alaska, 2025
- 152Stack 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 Alaska 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 Alaska, 2025
- Fairbanks North Star County 56
- Kenai Peninsula County 33
- North Slope County 21
- Anchorage Municipality County 17
- Southeast Fairbanks (CA) County 6
- Denali County 6
- Northwest Arctic County 4
- Valdez-Cordova (CA) County 4
- Aleutians West (CA) County 3
Alaska, other years
Air-emissions stack tests recorded in Alaska, 2025
| Date | Facility | Where | Kind | Agency |
|---|---|---|---|---|
| 2025-06-15 | NORTHERN STAR (POGO) LLC / POGO MINE | DELTA JUNCTION, Southeast Fairbanks (CA), AK | Pass | State |
| 2025-06-12 | TESORO ALASKA COMPANY, LLC / KENAI REFINERY — high-priority violation on file | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-06-12 | TESORO ALASKA COMPANY, LLC / KENAI REFINERY — high-priority violation on file | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-06-12 | TESORO ALASKA COMPANY, LLC / KENAI REFINERY — high-priority violation on file | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-06-11 | TESORO ALASKA COMPANY, LLC / KENAI REFINERY — high-priority violation on file | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-06-10 | TESORO LOGISTICS OPERATIONS, LLC / NIKISKI TERMINAL | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-06-10 | TESORO ALASKA COMPANY, LLC / KENAI REFINERY — high-priority violation on file | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-06-06 | HILCORP ALASKA, LLC / KENAI GAS FIELD PAD 34-31 | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-06-06 | HILCORP ALASKA, LLC / KENAI GAS FIELD PAD 34-31 | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-06-04 | HILCORP ALASKA, LLC / KENAI GAS FIELD PAD 34-31 | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-06-03 | HILCORP ALASKA, LLC / KENAI GAS FIELD PAD 14-6 | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-05-22 | TESORO LOGISTICS OPERATIONS, LLC / OCEAN DOCK TERMINAL AND ANCHORAGE TERMI | ANCHORAGE, Anchorage Municipality, AK | Pass | State |
| 2025-05-22 | HILCORP ALASKA, LLC / BEAVER CREEK PRODUCTION FACILITY | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-05-21 | TESORO LOGISTICS OPERATIONS, LLC / OCEAN DOCK TERMINAL AND ANCHORAGE TERMI | ANCHORAGE, Anchorage Municipality, AK | Pass | State |
| 2025-05-21 | TECK ALASKA, INC. (TECK) / RED DOG MINE — high-priority violation on file | KOTZEBUE, Northwest Arctic, AK | Pass | State |
| 2025-05-20 | TESORO LOGISTICS OPERATIONS, LLC / OCEAN DOCK TERMINAL AND ANCHORAGE TERMI | ANCHORAGE, Anchorage Municipality, AK | Pass | State |
| 2025-05-14 | DOYON UTILITIES, LLC / DU-JBER-ELECTRIC, GAS, DRINKING WATER A | ANCHORAGE, Anchorage Municipality, AK | Pass | State |
| 2025-05-14 | HILCORP ALASKA, LLC / LISBURNE PRODUCTION CENTER (LPC) | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2025-05-14 | HILCORP ALASKA, LLC / LISBURNE PRODUCTION CENTER (LPC) | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2025-05-13 | DOYON UTILITIES, LLC / DU-JBER-ELECTRIC, GAS, DRINKING WATER A | ANCHORAGE, Anchorage Municipality, AK | Pass | State |
| 2025-05-07 | ALYESKA PIPELINE SERVICE COMPANY / PS #01, TAPS PUMP STATION | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2025-05-07 | ALYESKA PIPELINE SERVICE COMPANY / PS #01, TAPS PUMP STATION | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2025-05-06 | GOLDEN VALLEY ELECTRIC ASSOCIATION / HEALY POWER PLANT — high-priority violation on file | HEALY, Denali, AK | Pass | State |
| 2025-04-30 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2025-04-30 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2025-04-28 | HILCORP ALASKA, LLC / NORTHSTAR PRODUCTION FACILITY (NOR) | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2025-04-28 | HILCORP ALASKA, LLC / NORTHSTAR PRODUCTION FACILITY (NOR) | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2025-04-26 | HILCORP ALASKA, LLC / NORTHSTAR PRODUCTION FACILITY (NOR) | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2025-04-13 | HILCORP ALASKA, LLC / POINT THOMSON PRODUCTION FACILITY — high-priority violation on file | NORTH SLOPE BOROUGH, North Slope, AK | Fail | State |
| 2025-04-13 | HILCORP ALASKA, LLC / POINT THOMSON PRODUCTION FACILITY — high-priority violation on file | NORTH SLOPE BOROUGH, North Slope, AK | Fail | State |
| 2025-04-12 | HILCORP ALASKA, LLC / POINT THOMSON PRODUCTION FACILITY — high-priority violation on file | NORTH SLOPE BOROUGH, North Slope, AK | Fail | State |
| 2025-04-12 | HILCORP ALASKA, LLC / POINT THOMSON PRODUCTION FACILITY — high-priority violation on file | NORTH SLOPE BOROUGH, North Slope, AK | Fail | State |
| 2025-04-07 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2025-04-03 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2025-04-03 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2025-04-03 | HILCORP ALASKA, LLC / TYONEK PLATFORM | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-04-02 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
| 2025-04-01 | HILCORP ALASKA, LLC / TYONEK PLATFORM | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-04-01 | HILCORP ALASKA, LLC / TYONEK PLATFORM | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-03-20 | CHUGACH ELECTRIC ASSOCIATION / GEORGE SULLIVAN PLANT TWO | ANCHORAGE, Anchorage Municipality, AK | Pass | State |
| 2025-03-20 | CHUGACH ELECTRIC ASSOCIATION / GEORGE SULLIVAN PLANT TWO | ANCHORAGE, Anchorage Municipality, AK | Pass | State |
| 2025-03-19 | CITY OF UNALASKA / DUTCH HARBOR POWER PLANT (DHPP) — high-priority violation on file | DUTCH HARBOR, Aleutians West (CA), AK | Pass | State |
| 2025-03-18 | HILCORP ALASKA, LLC / GRANITE POINT PLATFORM | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-03-12 | HILCORP ALASKA, LLC / ANNA PLATFORM | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-03-11 | HILCORP ALASKA, LLC / ANNA PLATFORM | KENAI, Kenai Peninsula, AK | Pass | State |
| 2025-03-08 | CITY OF UNALASKA / DUTCH HARBOR POWER PLANT (DHPP) — high-priority violation on file | DUTCH HARBOR, Aleutians West (CA), AK | Pass | State |
| 2025-03-06 | CITY OF UNALASKA / DUTCH HARBOR POWER PLANT (DHPP) — high-priority violation on file | DUTCH HARBOR, Aleutians West (CA), AK | Pass | State |
| 2025-03-04 | HILCORP ALASKA, LLC / NIKAITCHUQ DEVELOPMENT | NORTH SLOPE BOROUGH, North Slope, AK | Pass | State |
| 2025-02-27 | GOLDEN VALLEY ELECTRIC ASSOCIATION / HEALY POWER PLANT — high-priority violation on file | HEALY, Denali, AK | Pass | State |
| 2025-02-26 | GOLDEN VALLEY ELECTRIC ASSOCIATION / HEALY POWER PLANT — high-priority violation on file | HEALY, Denali, AK | Pass | State |
| 2025-01-07 | NAKNEK ELECTRIC ASSOCIATION, INC. / NAKNEK POWER PLANT | KING SALMON, Bristol Bay, AK | Pass | State |
| 2025-01-05 | US AIR FORCE (EIELSON) / EIELSON AIR FORCE BASE — high-priority violation on file | FAIRBANKS, Fairbanks North Star, AK | Pass | State |
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Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.