Clean Air Act stationary source · ICIS-AIR AK0000000218500008

HILCORP ALASKA, LLC / PRUDHOE SEAWATER TREATMENT PLANT, North Slope Borough, AK: Clean Air Act compliance record, inspections, violations, penalties

• OperatingOperating status
• Major sourceEmissions classification
• No Violation IdentifiedCurrent violation status, as filed
• 44Compliance evaluations since January 1, 2017
• 0High-priority violations since January 1, 2017
• 0Formal enforcement actions since January 1, 2017

HILCORP ALASKA, LLC / PRUDHOE SEAWATER TREATMENT PLANT, at SECTION 11, TOWNSHIP 12N, RANGE 14E UMIAT M, 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

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 / PRUDHOE SEAWATER TREATMENT PLANT 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

• 44Evaluations since January 1, 2017
• 5Full compliance evaluations

Violations

• 1Violation 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.

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

Stack tests

• 10Stack tests since January 1, 2017
• 0Recorded as failed

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.

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 110070208531 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.