ArcelorMittal Calvert LLC

NPDES permit AL0080233 · Minor NON-POTW · effective, expires 2027-01-31 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 44 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among AL permits in EPA's filings — check your permit).

Limits in force (104)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX <= 115 deg F all year
001Oxygen, dissolved [DO]DAILY MN >= 2 mg/L all year
001Oxygen, dissolved [DO]MO AVG report only all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 31 mg/L all year
001Solids, total suspendedDAILY MX <= 60 mg/L all year
001Oil & GreaseMO AVG <= 26 mg/L all year
001Oil & GreaseDAILY MX <= 52 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 16 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX <= 24 mg/L all year
001Nitrogen, Kjeldahl, total [as N]MO AVG <= 46 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, Kjeldahl, total [as N]DAILY MX <= 69 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrite + Nitrate total [as N]MO AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrite + Nitrate total [as N]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Cyanide, total [as CN]MO AVG <= .65 mg/L all year
001Cyanide, total [as CN]DAILY MX <= 1.2 mg/L all year
001Cadmium, total [as Cd]MO AVG <= .07 mg/L all year
001Cadmium, total [as Cd]DAILY MX <= .11 mg/L all year
001Chromium, total [as Cr]MO AVG <= 1.71 mg/L all year
001Chromium, total [as Cr]DAILY MX <= 2.77 mg/L all year
001Copper, total [as Cu]MO AVG <= 2.07 mg/L all year
001Copper, total [as Cu]DAILY MX <= 3.38 mg/L all year
001Lead, total [as Pb]MO AVG <= .43 mg/L all year
001Lead, total [as Pb]DAILY MX <= .69 mg/L all year
001Nickel, total [as Ni]MO AVG <= 2.38 mg/L all year
001Nickel, total [as Ni]DAILY MX <= 3.98 mg/L all year
001Silver, total [as Ag]MO AVG <= .24 mg/L all year
001Silver, total [as Ag]DAILY MX <= .43 mg/L all year
001Zinc, total [as Zn]MO AVG <= 1.48 mg/L all year
001Zinc, total [as Zn]DAILY MX <= 2.61 mg/L 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
001Toxicity [acute], Ceriodaphnia dubiaSINGSAMP <= 0 pass=0;fail=1 all year
001Toxicity [acute], Pimephales promelas [Fathead Minnow]SINGSAMP <= 0 pass=0;fail=1 all year
001Mercury, total recoverableMO AVG report only all year
001Mercury, total recoverableDAILY MX report only all year
001Organics, total toxic [TTO]DAILY MX <= 2.13 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 38 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 57 mg/L all year
002pHDAILY MN report only all year
002pHDAILY MX report only all year
002Solids, total suspendedDAILY MX report only all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Chromium, total [as Cr]DAILY MX report only all year
002Lead, total [as Pb]DAILY MX report only all year
002Nickel, total [as Ni]DAILY MX report only all year
002Zinc, total [as Zn]DAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Mercury, total recoverableDAILY MX report only all year
002Chemical Oxygen Demand [COD]DAILY MX report only all year
004pHDAILY MN report only all year
004pHDAILY MX report only all year
004Solids, total suspendedDAILY MX report only all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Chromium, total [as Cr]DAILY MX report only all year
004Lead, total [as Pb]DAILY MX report only all year
004Nickel, total [as Ni]DAILY MX report only all year
004Zinc, total [as Zn]DAILY MX report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Mercury, total recoverableDAILY MX report only all year
004Chemical Oxygen Demand [COD]DAILY MX report only all year
007pHDAILY MN report only all year
007pHDAILY MX report only all year
007Solids, total suspendedDAILY MX report only all year
007Oil & GreaseDAILY MX <= 15 mg/L all year
007Chromium, total [as Cr]DAILY MX report only all year
007Lead, total [as Pb]DAILY MX report only all year
007Nickel, total [as Ni]DAILY MX report only all year
007Zinc, total [as Zn]DAILY MX report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
007Mercury, total recoverableDAILY MX report only all year
007Chemical Oxygen Demand [COD]DAILY MX report only all year
009pHDAILY MN report only all year
009pHDAILY MX report only all year
009Solids, total suspendedDAILY MX report only all year
009Oil & GreaseDAILY MX <= 15 mg/L all year
009Chromium, total [as Cr]DAILY MX report only all year
009Lead, total [as Pb]DAILY MX report only all year
009Nickel, total [as Ni]DAILY MX report only all year
009Zinc, total [as Zn]DAILY MX report only all year
009Flow, in conduit or thru treatment plantDAILY MX report only all year
009Mercury, total recoverableDAILY MX report only all year
009Chemical Oxygen Demand [COD]DAILY MX report only all year
011pHDAILY MN report only all year
011pHDAILY MX report only all year
011Solids, total suspendedDAILY MX report only all year
011Oil & GreaseDAILY MX <= 15 mg/L all year
011Chromium, total [as Cr]DAILY MX report only all year
011Lead, total [as Pb]DAILY MX report only all year
011Nickel, total [as Ni]DAILY MX report only all year
011Zinc, total [as Zn]DAILY MX report only all year
011Flow, in conduit or thru treatment plantDAILY MX report only all year
011Mercury, total recoverableDAILY MX report only all year
011Chemical Oxygen Demand [COD]DAILY MX report only all year
02ApHDAILY MN >= 6 SU all year
02ApHDAILY MX <= 9 SU all year
02AOil & GreaseMO AVG <= 2.3 lb/d all year
02AOil & GreaseDAILY MX <= 4.6 lb/d all year
02AFlow, in conduit or thru treatment plantMO AVG report only all year
02AFlow, in conduit or thru treatment plantDAILY MX 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