Clean Air Act stationary source · ICIS-AIR AK0000000218500050
HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU), North Slope Borough, AK: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- No Violation IdentifiedCurrent violation status, as filed
- 60Compliance evaluations since January 1, 2017
- 1High-priority violations since January 1, 2017
- 2Formal enforcement actions since January 1, 2017
HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU), at MILNE POINT 1, North Slope Borough in North Slope County, Alaska, is an operating major source of air pollution on EPA’s ICIS-AIR register. EPA’s file records its current violation status (ICIS-AIR’s high-priority violation field) as “No Violation Identified”. The status and classification are as EPA’s facility file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the source’s current standing, quarter by quarter.
Identity
| Facility as filed | HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU) |
|---|---|
| ICIS-AIR ID | AK0000000218500050 |
| EPA facility registry ID | 110064404700 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | No Violation Identified |
| Address | MILNE POINT 1, North Slope Borough, AK 99734 |
| County | North Slope County |
| In a nonattainment county | No (EPA Green Book) |
| Industry (NAICS) | Oil and gas extraction (NAICS 2111) |
| EPA region | 10 |
Cited to the EPA ICIS-AIR facility file (ECHO download).
Programs and pollutants
Velarion’s copy of EPA’s ICIS-AIR download does not include its program, pollutant and Title V certification files, so this page does not list the Clean Air Act programs HILCORP ALASKA, LLC / MILNE POINT PRODUCTION FACILITY (MPU) is under or the pollutants it is permitted for. The programs each evaluation and violation below was recorded under are shown with it. EPA’s free Detailed Facility Report lists both.
Compliance evaluations
- 60Evaluations since January 1, 2017
- 5Full compliance evaluations
The newest 50 of 60.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| August 17, 2026 | PCE Off-Site | State | Title V Permits |
| August 17, 2026 | PCE Off-Site | State | Title V Permits |
| June 29, 2026 | PCE Off-Site | State | Title V Permits |
| June 29, 2026 | PCE Off-Site | State | Title V Permits |
| June 29, 2026 | PCE Off-Site | State | Title V Permits |
| June 29, 2026 | PCE Off-Site | State | Title V Permits |
| February 17, 2026 | PCE Off-Site | State | Title V Permits |
| February 17, 2026 | PCE Off-Site | State | Title V Permits |
| November 24, 2025 | PCE Off-Site | State | Title V Permits |
| November 24, 2025 | PCE Off-Site | State | Title V Permits |
| August 7, 2025 | PCE Off-Site | State | Title V Permits |
| August 7, 2025 | PCE Off-Site | State | Title V Permits |
| August 7, 2025 | PCE Off-Site | State | Title V Permits |
| July 8, 2025 | PCE Off-Site | State | Title V Permits |
| July 8, 2025 | PCE Off-Site | State | Title V Permits |
| March 17, 2025 | FCE On-Site | State | Title V Permits |
| February 18, 2025 | PCE Off-Site | State | Title V Permits |
| February 18, 2025 | PCE Off-Site | State | Title V Permits |
| November 18, 2024 | PCE Off-Site | State | Title V Permits |
| November 18, 2024 | PCE Off-Site | State | Title V Permits |
| August 29, 2024 | PCE Off-Site | State | Title V Permits |
| August 29, 2024 | PCE Off-Site | State | Title V Permits |
| May 31, 2024 | PCE Off-Site | State | Title V Permits |
| May 31, 2024 | PCE Off-Site | State | Title V Permits |
| March 22, 2024 | PCE Off-Site | State | Title V Permits |
| March 22, 2024 | PCE Off-Site | State | Title V Permits |
| March 22, 2024 | PCE Off-Site | State | Title V Permits |
| March 21, 2024 | PCE Off-Site | State | Title V Permits |
| August 11, 2023 | PCE Off-Site | State | Title V Permits |
| May 3, 2023 | PCE Off-Site | State | Title V Permits |
| March 1, 2023 | PCE Off-Site | State | Title V Permits |
| January 17, 2023 | PCE Off-Site | State | Title V Permits |
| January 11, 2023 | FCE On-Site | State | Title V Permits |
| August 5, 2022 | PCE Off-Site | State | Title V Permits |
| May 24, 2022 | PCE Off-Site | State | Title V Permits |
| February 20, 2022 | PCE Off-Site | State | Title V Permits |
| November 19, 2021 | PCE Off-Site | State | Title V Permits |
| August 20, 2021 | PCE Off-Site | State | Title V Permits |
| April 23, 2021 | FCE Off-Site | State | Title V Permits |
| March 11, 2021 | PCE Off-Site | State | Title V Permits |
| March 11, 2021 | PCE Off-Site | State | Title V Permits |
| February 9, 2021 | PCE Off-Site | State | Title V Permits |
| February 8, 2021 | PCE Off-Site | State | Title V Permits |
| August 3, 2020 | PCE Off-Site | State | Title V Permits |
| May 14, 2020 | PCE Off-Site | State | Title V Permits |
| February 5, 2020 | PCE Off-Site | State | Title V Permits |
| September 25, 2019 | FCE On-Site | State | Title V Permits |
| August 21, 2019 | PCE Off-Site | State | Title V Permits |
| July 17, 2019 | PCE On-Site Monitoring/Sampling | U.S. EPA | New Source Performance Standards |
| June 7, 2019 | PCE Off-Site | State | Title V Permits |
Violations
- 12Violation determinations since January 1, 2017
- 1Of them high-priority
A high-priority violation (HPV) is the most serious class of Clean Air Act non-compliance an agency records; a federally reportable violation (FRV) is the next step down. Each row is one determination as EPA’s violation history files it.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| March 10, 2025 | Earliest FRV determination | State | Title V Permits |
| August 29, 2024 | Earliest FRV determination | State | Title V Permits |
| July 12, 2024 | Earliest FRV determination | State | Title V Permits |
| July 12, 2024 | Earliest FRV determination | State | Title V Permits |
| May 13, 2024 | Earliest FRV determination | State | Title V Permits |
| April 26, 2024 | Earliest FRV determination | State | Title V Permits |
| April 2, 2024 | Earliest FRV determination | State | Title V Permits |
| March 1, 2024 | Earliest FRV determination | State | Title V Permits |
| January 5, 2023 | Earliest FRV determination | State | Title V Permits |
| November 13, 2020 | HPV day-zero determination | State | 40 CFR Part 63 Area Sources; National Emission Standards for Hazardous Air Pollutants (40 CFR Part 61); New Source Performance Standards; Prevention of Significant Deterioration of Air Quality; Title V Permits |
| August 22, 2019 | Earliest FRV determination | State | Title V Permits |
| June 7, 2019 | Earliest FRV determination | State | Title V Permits |
Enforcement and penalties
2 formal enforcement actions since January 1, 2017, 2 of them with a penalty filed above zero. Each penalty is shown as EPA’s formal action file states it; “Not stated” means the file gives no figure, and $0 is a disclosed zero.
| Date | What EPA recorded | Agency | Penalty, as filed |
|---|---|---|---|
| March 4, 2022 | Administrative Order | State | $141,597 |
| February 28, 2022 | CAA 113D1 Action For Penalty | U.S. EPA | $180,580 |
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| December 29, 2025 | Warning Letter | State |
| December 5, 2025 | Warning Letter | State |
| November 14, 2025 | Warning Letter | State |
| August 8, 2025 | Warning Letter | State |
| July 18, 2025 | Warning Letter | State |
| March 19, 2025 | Warning Letter | State |
| August 30, 2024 | Warning Letter | State |
| August 16, 2024 | Warning Letter | State |
| July 15, 2024 | Warning Letter | State |
| July 15, 2024 | Warning Letter | State |
| June 4, 2024 | Warning Letter | State |
| May 30, 2024 | Warning Letter | State |
| May 17, 2024 | Warning Letter | State |
| March 1, 2024 | Warning Letter | State |
| October 22, 2021 | Notice of Violation | State |
| April 16, 2020 | Notice of Violation | U.S. EPA |
| October 16, 2019 | Warning Letter | State |
| September 25, 2019 | Warning Letter | State |
| September 28, 2017 | Warning Letter | State |
Stack tests
- 16Stack tests since January 1, 2017
- 2Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| October 19, 2025 | Fail | State |
| May 14, 2024 | Pass | State |
| November 17, 2023 | Pass | State |
| November 16, 2023 | Pass | State |
| September 17, 2023 | Pass | State |
| June 14, 2023 | Pass | State |
| January 21, 2023 | Pass | State |
| September 17, 2021 | Pass | State |
| September 18, 2020 | Pass | State |
| October 21, 2019 | Pass | State |
| October 23, 2018 | Fail | State |
| July 2, 2018 | Pass | State |
| July 1, 2018 | Pass | State |
| July 1, 2018 | Pass | State |
| December 15, 2017 | Pass | State |
| October 15, 2017 | Pass | State |
Cited to the EPA ICIS-AIR evaluation, violation, stack test and enforcement files (ECHO download), events dated January 1, 2017 or later as loaded; up to 50 rows of each shown, newest first.
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How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every source on ECHO: its compliance status quarter by quarter, its evaluations, and its violations, enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter EPA facility registry ID 110064404700 there.
Nearby on the register
- Air-emissions sources in North Slope County
- Every source record in North Slope County, A to Z
- Air-emissions sources in Alaska
- Every source record in Alaska, A to Z
Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.