Clean Air Act stationary source · ICIS-AIR AK0000000218530001
HILCORP ALASKA, LLC / ENDICOTT PRODUCTION FACILITY (END), North Slope Borough, AK: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- No Violation IdentifiedCurrent violation status, as filed
- 66Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 0Formal enforcement actions since January 1, 2017
HILCORP ALASKA, LLC / ENDICOTT PRODUCTION FACILITY (END), at SECTION 36, TOWNSHIP 12N, RANGE 16E UMIAT MERIDIAN, 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 / ENDICOTT PRODUCTION FACILITY (END) |
|---|---|
| ICIS-AIR ID | AK0000000218530001 |
| EPA facility registry ID | 110008972594 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | No Violation Identified |
| Address | SECTION 36, TOWNSHIP 12N, RANGE 16E UMIAT MERIDIAN, 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 / ENDICOTT PRODUCTION FACILITY (END) 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
- 66Evaluations since January 1, 2017
- 5Full compliance evaluations
The newest 50 of 66.
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| August 3, 2026 | PCE Off-Site | State | Title V Permits |
| August 3, 2026 | PCE Off-Site | State | Title V Permits |
| March 28, 2026 | PCE Off-Site | State | Title V Permits |
| March 28, 2026 | PCE Off-Site | State | Title V Permits |
| January 22, 2026 | PCE Off-Site | State | Title V Permits |
| January 22, 2026 | PCE Off-Site | State | Title V Permits |
| September 30, 2025 | FCE On-Site | State | Title V Permits |
| September 23, 2025 | PCE Off-Site | State | Title V Permits |
| September 22, 2025 | PCE Off-Site | State | Title V Permits |
| July 23, 2025 | PCE Off-Site | State | Title V Permits |
| July 23, 2025 | PCE Off-Site | State | Title V Permits |
| February 27, 2025 | PCE Off-Site | State | Title V Permits |
| February 27, 2025 | PCE Off-Site | State | Title V Permits |
| December 2, 2024 | PCE Off-Site | State | Title V Permits |
| December 2, 2024 | PCE Off-Site | State | Title V Permits |
| November 4, 2024 | PCE Off-Site | State | Title V Permits |
| November 1, 2024 | PCE Off-Site | State | Title V Permits |
| August 14, 2024 | PCE Off-Site | State | Title V Permits |
| August 14, 2024 | PCE Off-Site | State | Title V Permits |
| May 2, 2024 | PCE Off-Site | State | Title V Permits |
| May 2, 2024 | PCE Off-Site | State | Title V Permits |
| January 23, 2024 | PCE Off-Site | State | Title V Permits |
| January 23, 2024 | PCE Off-Site | State | Title V Permits |
| November 7, 2023 | PCE Off-Site | State | Title V Permits |
| September 15, 2023 | FCE On-Site | State | Title V Permits |
| September 1, 2023 | PCE Off-Site | State | Title V Permits |
| May 18, 2023 | PCE Off-Site | State | Title V Permits |
| March 9, 2023 | PCE Off-Site | State | Title V Permits |
| March 9, 2023 | PCE Off-Site | State | Title V Permits |
| February 9, 2023 | PCE Off-Site | State | Title V Permits |
| February 9, 2023 | PCE Off-Site | State | Title V Permits |
| January 19, 2023 | PCE Off-Site | State | Title V Permits |
| July 29, 2022 | PCE Off-Site | State | Title V Permits |
| May 25, 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 |
| October 6, 2021 | FCE Off-Site | 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 |
| September 29, 2021 | PCE Off-Site | State | Title V Permits |
| August 12, 2021 | PCE Off-Site | State | Title V Permits |
| April 21, 2021 | PCE Off-Site | State | Title V Permits |
| April 20, 2021 | PCE Off-Site | State | Title V Permits |
| January 20, 2021 | PCE Off-Site | State | Title V Permits |
| January 19, 2021 | PCE Off-Site | State | Title V Permits |
| January 6, 2021 | PCE Off-Site | State | Title V Permits |
| January 6, 2021 | PCE Off-Site | State | Title V Permits |
| August 5, 2020 | PCE Off-Site | State | Title V Permits |
| April 27, 2020 | PCE Off-Site | State | Title V Permits |
| March 10, 2020 | PCE Off-Site | State | Title V Permits |
| December 4, 2019 | FCE On-Site | State | Title V Permits |
Violations
- 6Violation determinations since January 1, 2017
- 0Of 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, 2022 | Earliest FRV determination | State | Title V Permits |
| May 19, 2021 | Earliest FRV determination | State | Title V Permits |
| April 15, 2021 | Earliest FRV determination | State | Title V Permits |
| February 15, 2021 | Earliest FRV determination | State | Title V Permits |
| August 22, 2019 | Earliest FRV determination | State | Title V Permits |
| March 16, 2018 | Earliest FRV determination | State | Title V Permits |
Enforcement and penalties
0 formal enforcement actions since January 1, 2017, 0 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.
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| October 6, 2021 | Warning Letter | State |
| August 16, 2021 | Warning Letter | State |
| January 9, 2020 | Warning Letter | State |
| March 16, 2018 | Warning Letter | State |
Stack tests
- 15Stack tests since January 1, 2017
- 0Recorded as failed
| Date | What EPA recorded | Agency |
|---|---|---|
| October 17, 2024 | Pass | State |
| October 17, 2024 | Pass | State |
| October 17, 2024 | Pass | State |
| April 16, 2024 | Pass | State |
| April 15, 2024 | Pass | State |
| April 14, 2024 | Pass | State |
| April 13, 2024 | Pass | State |
| October 25, 2019 | Pass | State |
| October 24, 2019 | Pass | State |
| October 23, 2019 | Pass | State |
| April 26, 2019 | Pass | State |
| April 25, 2019 | Pass | State |
| April 24, 2019 | Pass | State |
| December 13, 2017 | Pass | State |
| December 13, 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 110008972594 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.