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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

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 filedHILCORP ALASKA, LLC / ENDICOTT PRODUCTION FACILITY (END)
ICIS-AIR IDAK0000000218530001
EPA facility registry ID110008972594
Operating statusOperating
Emissions classificationMajor source
Current violation status (ICIS-AIR high-priority violation field)No Violation Identified
AddressSECTION 36, TOWNSHIP 12N, RANGE 16E UMIAT MERIDIAN, North Slope Borough, AK 99734
CountyNorth Slope County
In a nonattainment countyNo (EPA Green Book)
Industry (NAICS)Oil and gas extraction (NAICS 2111)
EPA region10

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

The newest 50 of 66.

DateWhat EPA recordedAgencyPrograms
August 3, 2026PCE Off-SiteStateTitle V Permits
August 3, 2026PCE Off-SiteStateTitle V Permits
March 28, 2026PCE Off-SiteStateTitle V Permits
March 28, 2026PCE Off-SiteStateTitle V Permits
January 22, 2026PCE Off-SiteStateTitle V Permits
January 22, 2026PCE Off-SiteStateTitle V Permits
September 30, 2025FCE On-SiteStateTitle V Permits
September 23, 2025PCE Off-SiteStateTitle V Permits
September 22, 2025PCE Off-SiteStateTitle V Permits
July 23, 2025PCE Off-SiteStateTitle V Permits
July 23, 2025PCE Off-SiteStateTitle V Permits
February 27, 2025PCE Off-SiteStateTitle V Permits
February 27, 2025PCE Off-SiteStateTitle V Permits
December 2, 2024PCE Off-SiteStateTitle V Permits
December 2, 2024PCE Off-SiteStateTitle V Permits
November 4, 2024PCE Off-SiteStateTitle V Permits
November 1, 2024PCE Off-SiteStateTitle V Permits
August 14, 2024PCE Off-SiteStateTitle V Permits
August 14, 2024PCE Off-SiteStateTitle V Permits
May 2, 2024PCE Off-SiteStateTitle V Permits
May 2, 2024PCE Off-SiteStateTitle V Permits
January 23, 2024PCE Off-SiteStateTitle V Permits
January 23, 2024PCE Off-SiteStateTitle V Permits
November 7, 2023PCE Off-SiteStateTitle V Permits
September 15, 2023FCE On-SiteStateTitle V Permits
September 1, 2023PCE Off-SiteStateTitle V Permits
May 18, 2023PCE Off-SiteStateTitle V Permits
March 9, 2023PCE Off-SiteStateTitle V Permits
March 9, 2023PCE Off-SiteStateTitle V Permits
February 9, 2023PCE Off-SiteStateTitle V Permits
February 9, 2023PCE Off-SiteStateTitle V Permits
January 19, 2023PCE Off-SiteStateTitle V Permits
July 29, 2022PCE Off-SiteStateTitle V Permits
May 25, 2022PCE Off-SiteStateTitle V Permits
May 24, 2022PCE Off-SiteStateTitle V Permits
February 20, 2022PCE Off-SiteStateTitle V Permits
November 19, 2021PCE Off-SiteStateTitle V Permits
October 6, 2021FCE Off-SiteState40 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, 2021PCE Off-SiteStateTitle V Permits
August 12, 2021PCE Off-SiteStateTitle V Permits
April 21, 2021PCE Off-SiteStateTitle V Permits
April 20, 2021PCE Off-SiteStateTitle V Permits
January 20, 2021PCE Off-SiteStateTitle V Permits
January 19, 2021PCE Off-SiteStateTitle V Permits
January 6, 2021PCE Off-SiteStateTitle V Permits
January 6, 2021PCE Off-SiteStateTitle V Permits
August 5, 2020PCE Off-SiteStateTitle V Permits
April 27, 2020PCE Off-SiteStateTitle V Permits
March 10, 2020PCE Off-SiteStateTitle V Permits
December 4, 2019FCE On-SiteStateTitle V Permits

Violations

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.

DateWhat EPA recordedAgencyPrograms
March 10, 2022Earliest FRV determinationStateTitle V Permits
May 19, 2021Earliest FRV determinationStateTitle V Permits
April 15, 2021Earliest FRV determinationStateTitle V Permits
February 15, 2021Earliest FRV determinationStateTitle V Permits
August 22, 2019Earliest FRV determinationStateTitle V Permits
March 16, 2018Earliest FRV determinationStateTitle 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

DateWhat EPA recordedAgency
October 6, 2021Warning LetterState
August 16, 2021Warning LetterState
January 9, 2020Warning LetterState
March 16, 2018Warning LetterState

Stack tests

DateWhat EPA recordedAgency
October 17, 2024PassState
October 17, 2024PassState
October 17, 2024PassState
April 16, 2024PassState
April 15, 2024PassState
April 14, 2024PassState
April 13, 2024PassState
October 25, 2019PassState
October 24, 2019PassState
October 23, 2019PassState
April 26, 2019PassState
April 25, 2019PassState
April 24, 2019PassState
December 13, 2017PassState
December 13, 2017PassState

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

Figures from EPA’s ICIS-AIR download, loaded September 14, 2026.