Metro Metals Northwest Inc

NPDES permit WA0040991 · Minor NON-POTW · effective, expires 2031-06-30 · 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 60 forms filed late

Last period with anything received: 2026-08-31. Most often over: Chemical oxygen demand [COD] (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).

Limits in force (53)

OutfallParameterStatisticLimitMonths
001Solids, total suspendedDAILY MX <= 50 mg/L all year
001Copper, total [as Cu]DAILY MX <= 29 ug/L all year
001Lead, total [as Pb]DAILY MX <= 17 ug/L all year
001Zinc, total [as Zn]DAILY MX <= 455 ug/L all year
001AcenaphthyleneSingle Rdg report only (alert) all year
001AcenaphtheneSingle Rdg report only (alert) all year
001AnthraceneSingle Rdg report only (alert) all year
001Benzo[b]fluorantheneSingle Rdg report only (alert) all year
001Benzo[k]fluorantheneSingle Rdg report only (alert) all year
001Benzo[a]pyreneSingle Rdg report only (alert) all year
001ChryseneSingle Rdg report only (alert) all year
001FluorantheneSingle Rdg report only (alert) all year
001FluoreneSingle Rdg report only (alert) all year
001Indeno[1,2,3-cd]pyreneSingle Rdg report only (alert) all year
001PhenanthreneSingle Rdg report only (alert) all year
001PyreneSingle Rdg report only (alert) all year
001Benzo[ghi]peryleneSingle Rdg report only (alert) all year
001Benzo[a]anthraceneSingle Rdg report only (alert) all year
001Dibenz[a,h]anthraceneSingle Rdg report only (alert) all year
001NaphthaleneSingle Rdg report only (alert) all year
001Oil & grease, non-polar materialMO AVG <= 10 mg/L all year
001Polychlorinated biphenyls [PCBs], sum of AroclorsDAILY MX <= .05 ug/L all year
001pH, maximumDAILY MX <= 9 SU all year
001pH, minimumDAILY MN >= 6 SU all year
001Mercury, total [as Hg]DAILY MX <= .3 ug/L all year
001FlowDAILY MX report only (alert) all year
001FlowMO AVG report only (alert) all year
001Chemical oxygen demand [COD]DAILY MX <= 120 mg/L (alert) all year
002pHDAILY MX report only (alert) all year
002Solids, total suspendedDAILY MX report only (alert) all year
002Copper, total [as Cu]DAILY MX report only (alert) all year
002Lead, total [as Pb]DAILY MX report only (alert) all year
002Zinc, total [as Zn]DAILY MX report only (alert) all year
002Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX report only (alert) all year
002Oil & grease, non-polar materialDAILY MX report only (alert) all year
002Volume, totalDAILY MX report only (alert) all year
002Polychlorinated biphenyls [PCBs], sum of AroclorsDAILY MX report only (alert) all year
002Mercury, total [as Hg]DAILY MX report only (alert) all year
002FlowDAILY MX report only (alert) all year
002Chemical oxygen demand, solubleDAILY MX report only (alert) all year
002Duration of dischargeDAILY MX report only (alert) all year
003pHDAILY MX report only (alert) all year
003Solids, total suspendedDAILY MX report only (alert) all year
003Copper, total [as Cu]DAILY MX report only (alert) all year
003Lead, total [as Pb]DAILY MX report only (alert) all year
003Zinc, total [as Zn]DAILY MX report only (alert) all year
003Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX report only (alert) all year
003Oil & grease, non-polar materialDAILY MX report only (alert) all year
003Volume, totalDAILY MX report only (alert) all year
003Polychlorinated biphenyls [PCBs], sum of AroclorsDAILY MX report only (alert) all year
003Mercury, total [as Hg]DAILY MX report only (alert) all year
003Chemical oxygen demand, solubleDAILY MX report only (alert) all year
003Duration of dischargeDAILY 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