GIBSON COUNTY COAL LLC - GIBSON MINE

NPDES permit IN0061786 · Minor NON-POTW · effective, expires 2029-03-31 · 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 72 forms filed late

Last period with anything received: 2026-08-31.

Reporting

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

Limits in force (77)

OutfallParameterStatisticLimitMonths
003pHDAILY MN >= 6 SU all year
003pHDAILY MX <= 9 SU all year
003Hardness, total [as CaCO3]MO AVG report only all year
003Hardness, total [as CaCO3]DAILY MX report only all year
003Chloride [as Cl]MO AVG <= 739 mg/L all year
003Chloride [as Cl]DAILY MX <= 1700 mg/L all year
003Sulfate, total [as SO4]MO AVG <= 524 mg/L all year
003Sulfate, total [as SO4]DAILY MX <= 1219 mg/L all year
003Iron, total recoverableMO AVG <= 2.4 mg/L all year
003Iron, total recoverableDAILY MX <= 5.5 mg/L all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Solids, total dissolvedMO AVG <= 2055 mg/L all year
003Solids, total dissolvedDAILY MX <= 4782 mg/L all year
003Flow, augmented waterMO AVG report only all year
003Flow, augmented waterDAILY MX report only all year
003Flow, totalMO TOTAL report only all year
005pHDAILY MN >= 6 SU all year
005pHDAILY MX <= 9 SU all year
005Hardness, total [as CaCO3]MO AVG report only all year
005Hardness, total [as CaCO3]DAILY MN report only all year
005Chloride [as Cl]MO AVG <= 739 mg/L all year
005Chloride [as Cl]DAILY MX <= 1700 mg/L all year
005Sulfate, total [as SO4]MO AVG <= 524 mg/L all year
005Sulfate, total [as SO4]DAILY MX <= 1219 mg/L all year
005Iron, total recoverableMO AVG <= 2.4 mg/L all year
005Iron, total recoverableDAILY MX <= 5.5 mg/L all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Solids, total dissolvedMO AVG <= 2055 mg/L all year
005Solids, total dissolvedDAILY MX <= 4782 mg/L all year
005Flow, augmented waterMO AVG report only all year
005Flow, augmented waterDAILY MX report only all year
005Flow, totalMO TOTAL report only all year
006pHDAILY MN >= 6 SU all year
006pHDAILY MX <= 9 SU all year
006Solids, total suspendedMO AVG <= 12 mg/L all year
006Solids, total suspendedMX WK AV <= 18 mg/L all year
006Nitrogen, ammonia total [as N]MO AVG <= 1.1 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
006Nitrogen, ammonia total [as N]MO AVG <= 1.6 mg/L Jan, Feb, Mar, Apr, Dec
006Nitrogen, ammonia total [as N]MX WK AV <= 1.6 mg/L May, Jun, Jul, Aug, Sep, Oct, Nov
006Nitrogen, ammonia total [as N]MX WK AV <= 2.4 mg/L Jan, Feb, Mar, Apr, Dec
006Phosphorus, total [as P]MO AVG <= 1 mg/L all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantMX WK AV report only all year
006Chlorine, total residualMO AVG < .06 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
006Chlorine, total residualDAILY MX < .06 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
006Chlorine, total residualDAILY MN >= .5 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
006E. coli, colony forming units [CFU]MO GEO <= 125 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
006E. coli, colony forming units [CFU]DAILY MX <= 235 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
006BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
006BOD, carbonaceous [5 day, 20 C]MX WK AV <= 15 mg/L all year
006Flow, totalMO TOTAL report only all year
100Chloride [as Cl]MO AVG <= 12334 lb/d all year
100Chloride [as Cl]DAILY MX <= 28000 lb/d all year
100Sulfate, total [as SO4]MO AVG <= 8746 lb/d all year
100Sulfate, total [as SO4]DAILY MX <= 20345 lb/d all year
100Iron, total recoverableMO AVG <= 40 lb/d all year
100Iron, total recoverableDAILY MX <= 92 lb/d all year
100Flow, in conduit or thru treatment plantMO AVG report only all year
100Flow, in conduit or thru treatment plantDAILY MX <= 2 MGD all year
103pHDAILY MN >= 6 SU all year
103pHDAILY MX <= 9 SU all year
103Solids, total suspendedMO AVG <= 35 mg/L all year
103Solids, total suspendedDAILY MX <= 70 mg/L all year
103Iron, total recoverableMO AVG <= 3 mg/L all year
103Iron, total recoverableDAILY MX <= 6 mg/L all year
103Flow, in conduit or thru treatment plantMO AVG report only all year
103Flow, in conduit or thru treatment plantDAILY MX report only all year
105pHDAILY MN >= 6 SU all year
105pHDAILY MX <= 9 SU all year
105Solids, total suspendedMO AVG <= 35 mg/L all year
105Solids, total suspendedDAILY MX <= 70 mg/L all year
105Iron, total recoverableMO AVG <= 3 mg/L all year
105Iron, total recoverableDAILY MX <= 6 mg/L all year
105Flow, in conduit or thru treatment plantMO AVG report only all year
105Flow, 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