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NPDES permit WA0031283 · Minor NON-POTW · administratively continued, expires 2026-01-31 · 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.

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

1values over a limit

0required values missing, on 0 form(s)

0of 5 forms filed late

Last period with anything received: 2026-01-31. Most often over: Solids, total suspended (1).

Reporting

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

Outfall MP1, form MM (DMR (Monthly)): every 1 month(s), 8 values

Limits in force (8)

Outfall	Parameter	Statistic	Limit	Months
MP1	Temperature, water deg. centigrade	MAXIMUM	report only (alert)	Jun, Jul, Aug, Sep
MP1	Oxygen, dissolved [DO]	DAILY MN	>= 8 mg/L	Jun, Jul, Aug, Sep
MP1	pH	DAILY MN	>= 6.5 SU	all year
MP1	pH	DAILY MX	<= 8.5 SU	all year
MP1	Solids, total suspended	AVERAGE	<= 30 mg/L	all year
MP1	Sulfide, total [as S]	DAILY MX	<= .2 mg/L	all year
MP1	Sulfate, total [as SO4]	MAXIMUM	report only (alert)	all year
MP1	Flow	MAXIMUM	report only (alert)	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