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Hilcorp Alaska, LLC

Crude Petroleum And Natural Gas, Anchorage, Alaska. NPDES permit AK0055913 expired Jul 27, 2026; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 004 form AM monthly (4 values), outfall 006 form AM monthly (3 values), outfall 009 form AM monthly (3 values), outfall 010 form AM monthly (3 values), outfall 012 form AM monthly (3 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 60 reports late

Limits in force (16)

ParameterStatisticLimitMonthsOutfall
Floating solids, waste or visible foam-visualvalue≤ 0 abst=0;prst=1all year004
Chlorine, total residualmaximum≤ 1 mg/Lall year004
Volumemonthly totalreport only (Mgal/mo)all year004
Oil and grease visualvalue≤ 0 abst=0;prst=1all year004
Flowmonthly averagereport only (MGD)all year006
Flowdaily maximumreport only (MGD)all year006
Oil and grease visualmaximum≤ 0 abst=0;prst=1all year006
Flowmonthly averagereport only (MGD)all year009
Flowdaily maximumreport only (MGD)all year009
Oil and grease visualmaximum≤ 0 abst=0;prst=1all year009
Flowmonthly averagereport only (MGD)all year010
Flowdaily maximumreport only (MGD)all year010
Oil and grease visualmaximum≤ 0 abst=0;prst=1all year010
Flowmonthly averagereport only (MGD)all year012
Flowdaily maximumreport only (MGD)all year012
Oil and grease visualmaximum≤ 0 abst=0;prst=1all year012

Cited limits by parameter: Alaska's rules and the federal ones.

Same industry: the 11 Oil and Gas Extraction permits in Alaska.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AK0055913 · MCP: https://passage-data.com/mcp