METAL IMPACT SOUTH LLC

NPDES permit MS0052523 · Minor NON-POTW · effective, expires 2030-12-31 · 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

14values over a limit
0required values missing, on 0 form(s)
1of 13 forms filed late

Last period with anything received: 2026-07-31. Most often over: Aluminum, total recoverable (7), E. coli (5), BOD, carbonaceous [5 day, 20 C] (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 (74)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMAXIMUM <= 90 deg F all year
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 31 mg/L all year
001Solids, total suspendedDAILY MX <= 60 mg/L all year
001Solids, total suspendedMO AVG <= 8.01 lb/d all year
001Solids, total suspendedDAILY MX <= 15.5 lb/d all year
001Oil & GreaseMO AVG <= 26 mg/L all year
001Oil & GreaseDAILY MX <= 52 mg/L all year
001Oil & GreaseMO AVG <= 6.72 lb/d all year
001Oil & GreaseDAILY MX <= 13.44 lb/d all year
001Nitrogen, total [as N]SEMI AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 2 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX <= 3 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= .52 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= .78 lb/d all year
001Phosphorus, total [as P]SEMI AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Cyanide, total [as CN]MO AVG <= .00886 mg/L all year
001Cyanide, total [as CN]DAILY MX <= .0375 mg/L all year
001Cyanide, total [as CN]MO AVG <= .0163 lb/d all year
001Cyanide, total [as CN]DAILY MX <= .0688 lb/d all year
001Nickel, total recoverableMO AVG <= .5685 mg/L all year
001Nickel, total recoverableDAILY MX <= 3.6 mg/L all year
001Nickel, total recoverableMO AVG <= 1.0291 lb/d all year
001Nickel, total recoverableDAILY MX <= 6.6058 lb/d all year
001Silver total recoverableMO AVG <= .036 mg/L all year
001Silver total recoverableDAILY MX <= .05949 mg/L all year
001Silver total recoverableMO AVG <= .0661 lb/d all year
001Silver total recoverableDAILY MX <= .1092 lb/d all year
001Zinc, total recoverableMO AVG <= 1.48 mg/L all year
001Zinc, total recoverableDAILY MX <= 1.7024 mg/L all year
001Zinc, total recoverableMO AVG <= 2.7155 lb/d all year
001Zinc, total recoverableDAILY MX <= 3.1236 lb/d all year
001Aluminum, total recoverableMO AVG <= .23862 mg/L all year
001Aluminum, total recoverableDAILY MX <= .42611 mg/L all year
001Aluminum, total recoverableMO AVG <= .43782 lb/d all year
001Aluminum, total recoverableDAILY MX <= .78183 lb/d all year
001Cadmium, total recoverableMO AVG <= .006 mg/L all year
001Cadmium, total recoverableDAILY MX <= .05239 mg/L all year
001Cadmium, total recoverableMO AVG <= .011 lb/d all year
001Cadmium, total recoverableDAILY MX <= .0961 lb/d all year
001Lead, total recoverableMO AVG <= .02511 mg/L all year
001Lead, total recoverableDAILY MX <= .69 mg/L all year
001Lead, total recoverableMO AVG <= .0461 lb/d all year
001Lead, total recoverableDAILY MX <= 1.266 lb/d all year
001Chromium, total recoverableMO AVG <= 1.65 mg/L all year
001Chromium, total recoverableDAILY MX <= 2.77 mg/L all year
001Chromium, total recoverableMO AVG <= 3.0318 lb/d all year
001Chromium, total recoverableDAILY MX <= 5.0824 lb/d all year
001Copper, total recoverableMO AVG <= .16438 mg/L all year
001Copper, total recoverableDAILY MX <= .23992 mg/L all year
001Copper, total recoverableMO AVG <= .3016 lb/d all year
001Copper, total recoverableDAILY MX <= .4402 lb/d all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= .03238 mg/L all year
001Chlorine, total residualDAILY MX <= .055 mg/L all year
001Chlorine, total residualMO AVG <= .0594 lb/d all year
001Chlorine, total residualDAILY MX <= .1009 lb/d all year
001E. coliMO AVG <= 126 #/100mL all year
001E. coliDAILY MX <= 410 #/100mL all year
001Solids, total dissolved [TDS]MO AVG report only all year
001Solids, total dissolved [TDS]DAILY MX report only all year
001Total toxic organics [TTO] [40 CFR433]DAILY MX <= 2.13 mg/L all year
001Total toxic organics [TTO] [40 CFR433]DAILY MX <= .55 lb/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 15 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 2.59 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 3.88 lb/d all year
001%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 29.86 % all year
001%Effect Static Renewal 7Day Chronic Pimephales promelasMINIMUM >= 29.86 % 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