Nucor Corporation-Nucor Steel Hickman Mill

NPDES permit AR0045977 · Major NON-POTW · effective, expires 2028-09-30 · 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

2values over a limit
0required values missing, on 0 form(s)
2of 28 forms filed late

Last period with anything received: 2026-08-31. Most often over: Solids, total suspended (1), Nitrogen, ammonia total [as N] (1).

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (75)

OutfallParameterStatisticLimitMonths
002Oxygen, dissolved [DO]INST MIN >= 2 mg/L all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedMO AVG <= 20 mg/L all year
002Solids, total suspendedDAILY MX <= 30 mg/L all year
002Solids, total suspendedMO AVG <= 5 lb/d all year
002Solids, total suspendedDAILY MX <= 7.5 lb/d all year
002Oil & GreaseMO AVG <= 10 mg/L all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Oil & GreaseMO AVG <= 2.5 lb/d all year
002Oil & GreaseDAILY MX <= 3.8 lb/d all year
002Nitrogen, ammonia total [as N]MO AVG <= 5 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 10 mg/L Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 5.2 mg/L Apr
002Nitrogen, ammonia total [as N]DAILY MX <= 7.5 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]DAILY MX <= 14.7 mg/L Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]DAILY MX <= 5.2 mg/L Apr
002Nitrogen, ammonia total [as N]MO AVG <= 1.3 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 2.5 lb/d Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 1.3 lb/d Apr
002Nitrogen, ammonia total [as N]DAILY MX <= 1.9 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]DAILY MX <= 3.7 lb/d Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]DAILY MX <= 1.3 lb/d Apr
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Coliform, fecal general30DA GEO <= 1000 #/100mL all year
002Coliform, fecal general7 DA GEO <= 2000 #/100mL all year
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 20 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 15 mg/L May, Jun, Jul, Aug, Sep, Oct
002BOD, carbonaceous [5 day, 20 C]DAILY MX <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002BOD, carbonaceous [5 day, 20 C]DAILY MX <= 23 mg/L May, Jun, Jul, Aug, Sep, Oct
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 5 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 3.8 lb/d May, Jun, Jul, Aug, Sep, Oct
002BOD, carbonaceous [5 day, 20 C]DAILY MX <= 7.5 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002BOD, carbonaceous [5 day, 20 C]DAILY MX <= 5.8 lb/d May, Jun, Jul, Aug, Sep, Oct
004pHMINIMUM >= 6 SU all year
004pHMAXIMUM <= 9 SU all year
004Solids, total suspendedMO AVG report only all year
004Solids, total suspendedDAILY MX report only all year
004Solids, total suspendedMO AVG <= 656.9 lb/d all year
004Solids, total suspendedDAILY MX <= 1669.3 lb/d all year
004Oil & GreaseMO AVG <= 10 mg/L all year
004Oil & GreaseDAILY MX <= 15 mg/L all year
004Oil & GreaseMO AVG <= 110.1 lb/d all year
004Oil & GreaseDAILY MX <= 180.1 lb/d all year
004Nickel, total recoverableMO AVG report only all year
004Nickel, total recoverableDAILY MX report only all year
004Nickel, total recoverableMO AVG <= .6 lb/d all year
004Nickel, total recoverableDAILY MX <= 1.1 lb/d all year
004Zinc, total recoverableMO AVG report only all year
004Zinc, total recoverableDAILY MX report only all year
004Zinc, total recoverableMO AVG <= 3.1 lb/d all year
004Zinc, total recoverableDAILY MX <= 9.4 lb/d all year
004Lead, total recoverableMO AVG report only all year
004Lead, total recoverableDAILY MX report only all year
004Lead, total recoverableMO AVG <= 2.2 lb/d all year
004Lead, total recoverableDAILY MX <= 6.7 lb/d all year
004Chromium, total recoverableMO AVG report only all year
004Chromium, total recoverableDAILY MX report only all year
004Chromium, total recoverableMO AVG <= .1 lb/d all year
004Chromium, total recoverableDAILY MX <= .3 lb/d all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
TX4Whole effluent toxicity - retest #148HR MIN report only all year
TX4Whole effluent toxicity - retest #248HR MIN report only all year
TX4WET, sublethal retest #148HR MIN report only all year
TX4WET, sublethal retest #248HR MIN report only all year
TX4Whole Effluent Toxicity - Retest #348HR MIN report only all year
TX4Whole Effluent Toxicity, Sub-Lethal Retest #348HR MIN report only all year
TX4Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48HR MIN report only all year
TX4LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX4NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48HR MIN report only all year
TX4NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48HR MIN report only all year
TX4Coef Of Var Static Renewal 48Hr Acute D. pulex48HR MIN report only all year
TX4Coef Of Var Static Renewal 48Hr Acute Pimephales promelas48HR MIN 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