Guardian Industries LLC

NPDES permit MI0037001 · Minor NON-POTW · effective, expires 2027-10-01 · 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 55 forms filed late

Last period with anything received: 2026-07-31. Most often over: Phosphorus, total [as P] (1).

Reporting

Reports are due about 21 days after each monitoring period ends (the most common figure among MI permits in EPA's filings — check your permit).

Limits in force (54)

OutfallParameterStatisticLimitMonths
002Temperature, water deg. fahrenheitDAILY MX report only all year
002Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
002pHDAILY MN >= 6.5 SU all year
002pHDAILY MX <= 9 SU all year
002Solids, total suspendedMO AVG <= 20 mg/L all year
002Solids, total suspendedMO AVG <= 20 mg/L all year
002Solids, total suspendedMO AVG <= 20 mg/L all year
002Solids, total suspendedDAILY MX <= 30 mg/L all year
002Solids, total suspendedDAILY MX <= 30 mg/L all year
002Solids, total suspendedDAILY MX report only all year
002Solids, total suspendedDAILY MX report only all year
002Solids, total suspendedDAILY MX <= 30 mg/L all year
002Solids, total suspendedMO AVG report only all year
002Solids, total suspendedMO AVG report only all year
002Solids, total suspendedMO AVG <= 58 lb/d all year
002Solids, total suspendedDAILY MX report only all year
002Solids, total suspendedDAILY MX report only all year
002Solids, total suspendedDAILY MX <= 1.2 lb/d all year
002Solids, total suspendedDAILY MX <= 1.6 lb/d all year
002Solids, total suspendedDAILY MX <= 87 lb/d all year
002Oil & GreaseDAILY MX report only all year
002Oil & GreaseDAILY MX report only all year
002Oil & GreaseDAILY MX <= .84 lb/d all year
002Oil & GreaseDAILY MX <= 1.1 lb/d all year
002Phosphorus, total [as P]MO AVG <= 1 mg/L all year
002Phosphorus, total [as P]DAILY MX report only all year
002Phosphorus, total [as P]MO AVG <= 2.9 lb/d all year
002Phosphorus, total [as P]DAILY MX report only all year
002Chloride [as Cl]DAILY MX report only all year
002Sulfate, total [as SO4]DAILY MX report only all year
002Silver, total [as Ag]DAILY MX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Chlorine, total residualDAILY MX <= 38 ug/L all year
002Chlorine, total residualDAILY MX <= 38 ug/L all year
002Chlorine, total residualDAILY MX <= 38 ug/L all year
002Production divided by days operated mo.MO TOTAL report only all year
002Solids, total dissolvedMO AVG <= 500 mg/L all year
002Solids, total dissolvedDAILY MX <= 750 mg/L all year
002Solids, total dissolvedMO AVG <= 1500 lb/d all year
002Solids, total dissolvedDAILY MX <= 2200 lb/d all year
002Mercury, total [as Hg]MO AVG report only all year
002Mercury, total [as Hg]DAILY MX report only all year
002Mercury, total [as Hg]MO AVG report only all year
002Mercury, total [as Hg]DAILY MX report only all year
002Outfall observation,visual, y/n responseVALUE report only 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