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NPDES permit WA0991040 · Minor NON-POTW · administratively continued, expires 2026-07-31 · 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

0values over a limit

0required values missing, on 0 form(s)

0of 15 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 WA permits in EPA's filings — check your permit).

Outfall MP1, form MM (DMR (Monthly)): every 1 month(s), 7 values
Outfall MP1, form QQ (DMR (Quarterly)): files for periods ending in Mar, Jun, Sep, Dec

Limits in force (8)

Outfall	Parameter	Statistic	Limit	Months
MP1	pH	DAILY MN	>= 6 SU	all year
MP1	pH	DAILY MX	<= 9 SU	all year
MP1	Lead, total [as Pb]	DAILY MX	report only (alert)	all year
MP1	Benzene, ethylbenzene, toluene, xylene combination	DAILY MX	<= 100 ug/L	all year
MP1	Benzene	DAILY MX	<= 2 ug/L	all year
MP1	Total Petroleum Hydrocarbons - Diesel	DAILY MX	<= 5 mg/L	all year
MP1	Total Petroleum Hydrocarbons - Gasoline	DAILY MX	<= 1 mg/L	all year
MP1	Flow	DAILY MX	<= 14400 gal/d	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