Clean Air Act stationary source · ICIS-AIR AK0000000218500057
HILCORP ALASKA, LLC / TRANSPORTABLE DRILLING RIGS (DRILL RIGS, North Slope Borough, AK: Clean Air Act compliance record, inspections, violations, penalties
- OperatingOperating status
- Major sourceEmissions classification
- No Violation IdentifiedCurrent violation status, as filed
- 27Compliance evaluations since January 1, 2017
- 0High-priority violations since January 1, 2017
- 0Formal enforcement actions since January 1, 2017
HILCORP ALASKA, LLC / TRANSPORTABLE DRILLING RIGS (DRILL RIGS, at 1 NORTH SLOPE DRILLING AREA, 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 / TRANSPORTABLE DRILLING RIGS (DRILL RIGS |
|---|---|
| ICIS-AIR ID | AK0000000218500057 |
| EPA facility registry ID | 110070256753 |
| Operating status | Operating |
| Emissions classification | Major source |
| Current violation status (ICIS-AIR high-priority violation field) | No Violation Identified |
| Address | 1 NORTH SLOPE DRILLING AREA, 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 / TRANSPORTABLE DRILLING RIGS (DRILL RIGS 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
- 27Evaluations since January 1, 2017
- 4Full compliance evaluations
| Date | What EPA recorded | Agency | Programs |
|---|---|---|---|
| April 17, 2026 | PCE Off-Site | State | Title V Permits |
| December 2, 2025 | FCE Off-Site | State | 40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| August 19, 2025 | PCE Off-Site | State | Title V Permits |
| May 13, 2025 | PCE Off-Site | State | Title V Permits |
| May 7, 2025 | PCE Off-Site | State | Title V Permits |
| November 14, 2024 | PCE Off-Site | State | Title V Permits |
| April 17, 2024 | PCE Off-Site | State | Title V Permits |
| March 14, 2023 | PCE Off-Site | State | Title V Permits |
| October 28, 2022 | PCE Off-Site | State | Title V Permits |
| February 28, 2022 | PCE Off-Site | State | Title V Permits |
| August 18, 2021 | PCE Off-Site | State | Title V Permits |
| February 18, 2021 | PCE Off-Site | State | Title V Permits |
| November 20, 2020 | FCE On-Site | State | 40 CFR Part 63 Area Sources; State Implementation Plan for National Primary and Secondary Ambient Air Quality Standards |
| October 8, 2020 | PCE Off-Site | State | Title V Permits |
| April 22, 2020 | PCE Off-Site | State | Title V Permits |
| September 6, 2019 | PCE Off-Site | State | Title V Permits |
| April 5, 2019 | FCE Off-Site | State | Title V Permits |
| February 21, 2019 | PCE Off-Site | State | Title V Permits |
| February 6, 2019 | PCE Off-Site | State | Title V Permits |
| February 6, 2019 | PCE Off-Site | State | Title V Permits |
| February 6, 2019 | PCE Off-Site | State | Title V Permits |
| May 2, 2018 | PCE Off-Site | State | Title V Permits |
| May 2, 2018 | PCE Off-Site | State | Title V Permits |
| October 11, 2017 | PCE Off-Site | State | Title V Permits |
| June 14, 2017 | FCE On-Site | State | Title V Permits |
| May 5, 2017 | PCE Off-Site | State | Title V Permits |
| March 15, 2017 | PCE Off-Site | State | Title V Permits |
Violations
- 0Violation 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.
EPA’s violation history file holds no violation for ICIS-AIR AK0000000218500057 since January 1, 2017.
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 |
|---|---|---|
| July 23, 2026 | Warning Letter | State |
| June 14, 2017 | Warning Letter | State |
Stack tests
- 0Stack tests since January 1, 2017
- 0Recorded as failed
EPA’s stack test file holds no test at ICIS-AIR AK0000000218500057 since January 1, 2017.
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 110070256753 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.