NUCOR STEEL SEATTLE INC

NPDES permit WA0031305 · Minor NON-POTW · administratively continued, expires 2026-02-28 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

0values over a limit
0required values missing, on 0 form(s)
0of 6 forms filed late

Last period with anything received: 2026-02-28.

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).

Limits in force (9)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only (alert) all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Oil and grease, hexane extr methodDAILY MX report only (alert) all year
001Copper, total [as Cu]DAILY MX report only (alert) all year
001Lead, total [as Pb]DAILY MX report only (alert) all year
001Zinc, total [as Zn]DAILY MX report only (alert) all year
001Polychlorinated biphenyls [PCBs]AVERAGE <= .05 ug/L all year
001FlowDAILY 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