LAKE UNION DRYDOCK CO

NPDES permit WA0030074 · Minor NON-POTW · administratively continued, expires 2023-03-31 · 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.

This permit expired on 2023-03-31 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

2values over a limit
0required values missing, on 0 form(s)
0of 12 forms filed late

Last period with anything received: 2026-06-30. Most often over: Oil and grease, hexane extr method (2).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (24)

OutfallParameterStatisticLimitMonths
D08TurbidityDAILY MX report only (alert) all year
D08TurbidityDAILY MX report only (alert) all year
D08Oil and grease, hexane extr methodDAILY MX <= 5 mg/L all year
D08Oil and grease, hexane extr methodDAILY MX <= 5 mg/L all year
D08Oil and grease visualDAILY MX <= 0 N=0;Y=1 all year
D08Oil and grease visualDAILY MX <= 0 N=0;Y=1 all year
D09TurbidityDAILY MX report only (alert) all year
D09TurbidityDAILY MX report only (alert) all year
D09Oil and grease, hexane extr methodDAILY MX <= 5 mg/L all year
D09Oil and grease, hexane extr methodDAILY MX <= 5 mg/L all year
D09Oil and grease visualDAILY MX <= 0 N=0;Y=1 all year
D09Oil and grease visualDAILY MX <= 0 N=0;Y=1 all year
D8STCopper, total [as Cu]DAILY MX report only (alert) all year
D8STCopper, total [as Cu]DAILY MX report only (alert) all year
D8STLead, total [as Pb]DAILY MX report only (alert) all year
D8STLead, total [as Pb]DAILY MX report only (alert) all year
D8STZinc, total [as Zn]DAILY MX report only (alert) all year
D8STZinc, total [as Zn]DAILY MX report only (alert) all year
D9STCopper, total [as Cu]DAILY MX report only (alert) all year
D9STCopper, total [as Cu]DAILY MX report only (alert) all year
D9STLead, total [as Pb]DAILY MX report only (alert) all year
D9STLead, total [as Pb]DAILY MX report only (alert) all year
D9STZinc, total [as Zn]DAILY MX report only (alert) all year
D9STZinc, total [as Zn]DAILY MX 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