Hilcorp Alaska, LLC

NPDES permit AK0055883 · Minor NON-POTW · administratively continued, expires 2024-07-07 · EPA's file as of 2026-09-19

Check this month's numbers before you file

Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2024-07-07 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit

0required values missing, on 0 form(s)

0of 34 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among AK permits in EPA's filings — check your permit).

Outfall 004, form A (Graywater from MODU when working at GPP): every 1 month(s), 4 values
Outfall 009, form AM (Noncontact Cooling Water from MODU when working at GPP): every 1 month(s), 2 values
Outfall 010, form A (Uncontaminated Ballast Water from MODU when working at GPP): every 1 month(s), 3 values
Outfall 009, form AA (Noncontact Cooling Water from MODU when working at GPP): files for periods ending in Dec

Limits in force (10)

Outfall	Parameter	Statistic	Limit	Months
004	Floating solids, waste or visible foam-visual	VALUE	<= 0 abst=0;prst=1	all year
004	Chlorine, total residual	MAXIMUM	<= 1 mg/L	all year
004	Volume	MO TOTAL	report only	all year
004	Oil and grease visual	VALUE	<= 0 abst=0;prst=1	all year
009	Flow	MO AVG	report only	all year
009	Flow	DAILY MX	report only	all year
009	Toxicity, Chronic	MAXIMUM	report only	all year
010	Flow	MO AVG	report only	all year
010	Flow	DAILY MX	report only	all year
010	Oil and grease visual	MAXIMUM	<= 0 abst=0;prst=1	all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states