EPA Air · inspections by county and year
Air-emissions inspections in North Slope County, Alaska, 2025
- 225Inspections
A compliance evaluation is the on-site or file review a state, local or federal air agency records against a permitted source. Each row below is one inspection recorded against a source in North Slope County, Alaska during 2025. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the North Slope County facility page.
North Slope County, Alaska, 2025
Air-emissions inspections in North Slope County, other years
Air-emissions inspections recorded in North Slope County, Alaska, 2025
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2025-12-19 | HILCORP ALASKA, LLC / GATHERING CENTER #3 (GC 3) | PCE Off-Site | State |
| 2025-12-18 | HILCORP ALASKA, LLC / GATHERING CENTER #1 (GC 1) | PCE Off-Site | State |
| 2025-12-15 | HILCORP ALASKA, LLC / FLOW STATION #1 (FS 1) — high-priority violation on file | PCE Off-Site | State |
| 2025-12-15 | CONOCOPHILLIPS ALASKA, INC. / ALPINE CENTRAL PROCESSING FACILITY | PCE Off-Site | State |
| 2025-12-13 | HILCORP ALASKA, LLC / CRUDE OIL TOPPING UNIT (COTU) | PCE Off-Site | State |
| 2025-12-11 | HILCORP ALASKA, LLC / GATHERING CENTER #2 (GC 2) | PCE Off-Site | State |
| 2025-12-11 | CONOCOPHILLIPS ALASKA, INC. / CPF 1, KUPARUK CENTRAL PRODUCTION FACIL | PCE Off-Site | State |
| 2025-12-05 | CONOCOPHILLIPS ALASKA, INC. / CPF 2, KUPARUK CENTRAL PRODUCTION FACIL | PCE Off-Site | State |
| 2025-12-05 | HILCORP ALASKA, LLC / SEAWATER INJECTION PLANT EAST (SIPE) | PCE Off-Site | State |
| 2025-12-05 | HILCORP ALASKA, LLC / PRUDHOE SEAWATER TREATMENT PLANT | PCE Off-Site | State |
| 2025-12-05 | HILCORP ALASKA, LLC / PBU CENTRAL POWER STATION (CPS) | PCE Off-Site | State |
| 2025-12-04 | HILCORP ALASKA, LLC / PRUDHOE BAY OPERATIONS CENTER / MAIN CO | PCE Off-Site | State |
| 2025-12-02 | HILCORP ALASKA, LLC / TRANSPORTABLE DRILLING RIGS (DRILL RIGS | FCE Off-Site | State |
| 2025-12-02 | HILCORP ALASKA, LLC / Z-PAD | FCE Off-Site | State |
| 2025-11-26 | HARVEST ALASKA LNG, LLC / LIQUEFIED NATURAL GAS (LNG) FACILITY PR | FCE Off-Site | State |
| 2025-11-25 | HILCORP ALASKA, LLC / LISBURNE PRODUCTION CENTER (LPC) | PCE Off-Site | State |
| 2025-11-25 | CONOCOPHILLIPS ALASKA, INC. / KUPARUK SEAWATER TREATMENT PLANT (STP) | PCE Off-Site | State |
| 2025-11-24 | HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU) | PCE Off-Site | State |
| 2025-11-24 | HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU) | PCE Off-Site | State |
| 2025-11-17 | CONOCOPHILLIPS ALASKA, INC. / CPF 3, KUPARUK CENTRAL PRODUCTION FACIL | PCE Off-Site | State |
| 2025-11-07 | HILCORP ALASKA, LLC / CENTRAL COMPRESSOR PLANT (CCP) | PCE Off-Site | State |
| 2025-11-07 | HILCORP ALASKA, LLC / CENTRAL COMPRESSOR PLANT (CCP) | PCE Off-Site | State |
| 2025-11-07 | HILCORP ALASKA, LLC / CENTRAL COMPRESSOR PLANT (CCP) | PCE Off-Site | State |
| 2025-11-07 | HILCORP ALASKA, LLC / FLOW STATION #3 (FS 3) — high-priority violation on file | PCE Off-Site | State |
| 2025-11-07 | HILCORP ALASKA, LLC / FLOW STATION #3 (FS 3) — high-priority violation on file | PCE Off-Site | State |
| 2025-11-06 | CONOCOPHILLIPS ALASKA, INC. / GREATER MOOSES TOOTH UNIT | PCE Off-Site | State |
| 2025-11-05 | HILCORP ALASKA, LLC / FLOW STATION #2 (FS 2) | PCE Off-Site | State |
| 2025-11-04 | HILCORP ALASKA, LLC / CENTRAL GAS FACILITY (CGF) — high-priority violation on file | PCE Off-Site | State |
| 2025-10-31 | CONOCOPHILLIPS ALASKA, INC. / KUPARUK RIVER UNIT TRANSPORTABLE DRILLI | PCE Off-Site | State |
| 2025-10-30 | CONOCOPHILLIPS ALASKA, INC. / ALPINE CENTRAL PROCESSING FACILITY | PCE Off-Site | State |
| 2025-10-30 | HILCORP ALASKA, LLC / NIKAITCHUQ DEVELOPMENT | PCE Off-Site | State |
| 2025-10-28 | NORTH SLOPE BOROUGH / NUIQSUT POWER PLANT — high-priority violation on file | FCE Off-Site | State |
| 2025-10-25 | OIL SEARCH ALASKA, LLC, A SUBSIDIARY O / NANUSHUK PROCESSING FACILITY (NPF) | PCE Off-Site | State |
| 2025-10-20 | HILCORP ALASKA, LLC / NORTHSTAR PRODUCTION FACILITY (NOR) | PCE Off-Site | State |
| 2025-10-16 | HILCORP ALASKA, LLC / PRUDHOE SEAWATER TREATMENT PLANT | PCE Off-Site | State |
| 2025-10-15 | HILCORP ALASKA, LLC / CENTRAL COMPRESSOR PLANT (CCP) | PCE Off-Site | State |
| 2025-10-15 | HILCORP ALASKA, LLC / CENTRAL COMPRESSOR PLANT (CCP) | PCE Off-Site | State |
| 2025-10-14 | HILCORP ALASKA, LLC / CENTRAL COMPRESSOR PLANT (CCP) | PCE Off-Site | State |
| 2025-10-13 | BARROW UTILITIES & ELECTRIC COOPERATIV / BARROW POWER PLANT | PCE Off-Site | State |
| 2025-10-08 | CONOCOPHILLIPS ALASKA, INC. / CPF 1, KUPARUK CENTRAL PRODUCTION FACIL | PCE Off-Site | State |
| 2025-10-08 | HILCORP ALASKA, LLC / GATHERING CENTER #3 (GC 3) | PCE Off-Site | State |
| 2025-10-08 | CONOCOPHILLIPS ALASKA, INC. / ALPINE SATELLITE DRILL PAD CD5 | PCE Off-Site | State |
| 2025-10-07 | CONOCOPHILLIPS ALASKA, INC. / CPF 2, KUPARUK CENTRAL PRODUCTION FACIL | PCE Off-Site | State |
| 2025-10-07 | HILCORP ALASKA, LLC / GATHERING CENTER #1 (GC 1) | PCE Off-Site | State |
| 2025-10-06 | CONOCOPHILLIPS ALASKA, INC. / CPF 3, KUPARUK CENTRAL PRODUCTION FACIL | PCE Off-Site | State |
| 2025-10-03 | HILCORP ALASKA, LLC / LISBURNE PRODUCTION CENTER (LPC) | PCE Off-Site | State |
| 2025-10-02 | ALYESKA PIPELINE SERVICE COMPANY / PS #03, TAPS PUMP STATION | PCE Off-Site | State |
| 2025-10-02 | ALYESKA PIPELINE SERVICE COMPANY / PS #04, TAPS PUMP STATION | PCE Off-Site | State |
| 2025-10-01 | CONOCOPHILLIPS ALASKA, INC. / KUPARUK SEAWATER TREATMENT PLANT (STP) | PCE Off-Site | State |
| 2025-09-30 | HILCORP ALASKA, LLC / ENDICOTT PRODUCTION FACILITY (END) | FCE On-Site | State |
| 2025-09-30 | HILCORP ALASKA, LLC / NIKAITCHUQ DEVELOPMENT | FCE On-Site | State |
| 2025-09-23 | CONOCOPHILLIPS ALASKA, INC. / GREATER MOOSES TOOTH 2/MOOSES TOOTH 7 ( | FCE Off-Site | State |
| 2025-09-23 | HILCORP ALASKA, LLC / ENDICOTT PRODUCTION FACILITY (END) | PCE Off-Site | State |
| 2025-09-22 | HILCORP ALASKA, LLC / GATHERING CENTER #2 (GC 2) | FCE On-Site | State |
| 2025-09-22 | HILCORP ALASKA, LLC / GATHERING CENTER #3 (GC 3) | FCE On-Site | State |
| 2025-09-22 | HILCORP ALASKA, LLC / ENDICOTT PRODUCTION FACILITY (END) | PCE Off-Site | State |
| 2025-09-19 | HILCORP ALASKA, LLC / PBU CENTRAL POWER STATION (CPS) | FCE On-Site | State |
| 2025-09-19 | CONOCOPHILLIPS ALASKA, INC. / GREATER MOOSES TOOTH 1/MOOSES TOOTH 6 ( | FCE Off-Site | State |
| 2025-09-19 | HILCORP ALASKA, LLC / OOOGURUK DEVELOPMENT PROJECT | FCE On-Site | State |
| 2025-09-18 | HILCORP ALASKA, LLC / GATHERING CENTER #1 (GC 1) | FCE On-Site | State |
| 2025-09-12 | HILCORP ALASKA, LLC / GATHERING CENTER #2 (GC 2) | PCE Off-Site | State |
| 2025-09-11 | HILCORP ALASKA, LLC / FLOW STATION #1 (FS 1) — high-priority violation on file | PCE Off-Site | State |
| 2025-09-11 | HILCORP ALASKA, LLC / PRUDHOE BAY OPERATIONS CENTER / MAIN CO | PCE Off-Site | State |
| 2025-09-09 | HILCORP ALASKA, LLC / MILNE POINT UNIT C-PAD | PCE Off-Site | State |
| 2025-09-05 | HARVEST ALASKA LNG, LLC / LIQUEFIED NATURAL GAS (LNG) FACILITY PR | PCE Off-Site | State |
| 2025-08-27 | HILCORP ALASKA, LLC / Z-PAD | PCE Off-Site | State |
| 2025-08-26 | HILCORP ALASKA, LLC / GATHERING CENTER #2 (GC 2) | PCE Off-Site | State |
| 2025-08-26 | CONOCOPHILLIPS ALASKA, INC. / WILLOW CENTRAL FACILITY (WCF) | PCE Off-Site | State |
| 2025-08-22 | NORTH SLOPE BOROUGH / POINT HOPE POWER PLANT | PCE Off-Site | State |
| 2025-08-22 | OIL SEARCH ALASKA, LLC, A SUBSIDIARY O / NANUSHUK DRILLSITE B | PCE Off-Site | State |
| 2025-08-22 | OIL SEARCH ALASKA, LLC, A SUBSIDIARY O / SEAWATER TREATMENT PLANT | PCE Off-Site | State |
| 2025-08-22 | OIL SEARCH ALASKA, LLC, A SUBSIDIARY O / SEAWATER TREATMENT PLANT | PCE Off-Site | State |
| 2025-08-22 | OIL SEARCH ALASKA, LLC, A SUBSIDIARY O / NANUSHUK OPERATIONS PAD | PCE Off-Site | State |
| 2025-08-20 | HILCORP ALASKA, LLC / SEAWATER INJECTION PLANT EAST (SIPE) | PCE Off-Site | State |
| 2025-08-19 | HILCORP ALASKA, LLC / SEAWATER INJECTION PLANT EAST (SIPE) | PCE Off-Site | State |
| 2025-08-19 | HILCORP ALASKA, LLC / TRANSPORTABLE DRILLING RIGS (DRILL RIGS | PCE Off-Site | State |
| 2025-08-19 | HILCORP ALASKA, LLC / CRUDE OIL TOPPING UNIT (COTU) | PCE Off-Site | State |
| 2025-08-18 | HILCORP ALASKA, LLC / PBU CENTRAL POWER STATION (CPS) | PCE Off-Site | State |
| 2025-08-15 | CONOCOPHILLIPS ALASKA, INC. / GREATER MOOSES TOOTH 1/MOOSES TOOTH 6 ( | PCE Off-Site | State |
| 2025-08-15 | HILCORP ALASKA, LLC / MILNE POINT L-PAD | PCE Off-Site | State |
| 2025-08-15 | HILCORP ALASKA, LLC / MILNE POINT L-PAD | PCE Off-Site | State |
| 2025-08-14 | CONOCOPHILLIPS ALASKA, INC. / GREATER MOOSES TOOTH 2/MOOSES TOOTH 7 ( | PCE Off-Site | State |
| 2025-08-13 | SAVANT ALASKA LLC / BADAMI DEVELOPMENT FACILITY — high-priority violation on file | PCE Off-Site | State |
| 2025-08-13 | NORTH SLOPE BOROUGH / WAINWRIGHT POWER PLANT | PCE Off-Site | State |
| 2025-08-13 | NORTH SLOPE BOROUGH / KAKTOVIK POWER PLANT | PCE Off-Site | State |
| 2025-08-13 | NORTH SLOPE BOROUGH / BARROW TOS FACILITY | PCE Off-Site | State |
| 2025-08-12 | NORTH SLOPE BOROUGH / NUIQSUT POWER PLANT — high-priority violation on file | PCE Off-Site | State |
| 2025-08-12 | CONOCOPHILLIPS ALASKA, INC. / WILLOW OPERATIONS CENTER (WOC) | PCE Off-Site | State |
| 2025-08-08 | HILCORP ALASKA, LLC / GATHERING CENTER #3 (GC 3) | PCE Off-Site | State |
| 2025-08-08 | HILCORP ALASKA, LLC / GRIND AND INJECT FACILITY (G & I) | PCE Off-Site | State |
| 2025-08-08 | HILCORP ALASKA, LLC / NIKAITCHUQ DEVELOPMENT | PCE Off-Site | State |
| 2025-08-07 | ALYESKA PIPELINE SERVICE COMPANY / PS #01, TAPS PUMP STATION | PCE Off-Site | State |
| 2025-08-07 | HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU) | PCE Off-Site | State |
| 2025-08-07 | HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU) | PCE Off-Site | State |
| 2025-08-07 | HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU) | PCE Off-Site | State |
| 2025-08-07 | HILCORP ALASKA, LLC / OOOGURUK DEVELOPMENT PROJECT | FCE Off-Site | State |
| 2025-08-07 | HILCORP ALASKA, LLC / NIKAITCHUQ DEVELOPMENT | FCE Off-Site | State |
| 2025-08-05 | HILCORP ALASKA, LLC / FLOW STATION #2 (FS 2) | PCE Off-Site | State |
| 2025-08-05 | HILCORP ALASKA, LLC / CENTRAL GAS FACILITY (CGF) — high-priority violation on file | PCE Off-Site | State |
| 2025-08-05 | HILCORP ALASKA, LLC / POINT THOMSON PRODUCTION FACILITY — high-priority violation on file | PCE Off-Site | State |
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Dates as filed by the agency that recorded the inspection. Figures from EPA’s ICIS-AIR download.