Peabody Midwest Mining LLC, Somerville South Mine

NPDES permit ING040038 · Minor NON-POTW · effective, expires 2029-06-30 · 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 92 forms filed late

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

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 (102)

OutfallParameterStatisticLimitMonths
039pHDAILY MN >= 6 SU all year
039pHDAILY MX <= 9 SU all year
039Solids, total suspendedDAILY AV <= 35 mg/L all year
039Solids, total suspendedDAILY MX <= 70 mg/L all year
039Solids, settleableDAILY AV report only all year
039Solids, settleableDAILY MX <= .5 mL/L all year
039Iron, total [as Fe]DAILY AV <= 3 mg/L all year
039Iron, total [as Fe]DAILY MX <= 6 mg/L all year
039DurationMO TOTAL report only all year
039Flow, in conduit or thru treatment plantDAILY AV report only all year
039Flow, in conduit or thru treatment plantDAILY MX report only all year
039Precipitation volumeMO TOTAL report only all year
060pHDAILY MN >= 6 SU Mar, Jun, Sep, Dec
060pHDAILY MX <= 9 SU Mar, Jun, Sep, Dec
060Solids, settleableDAILY AV report only Mar, Jun, Sep, Dec
060Solids, settleableDAILY MX <= .5 mL/L Mar, Jun, Sep, Dec
060Flow, in conduit or thru treatment plantDAILY AV report only Mar, Jun, Sep, Dec
060Flow, in conduit or thru treatment plantDAILY MX report only Mar, Jun, Sep, Dec
066pHDAILY MN >= 6 SU all year
066pHDAILY MX <= 9 SU all year
066Solids, total suspendedDAILY AV <= 35 mg/L all year
066Solids, total suspendedDAILY MX <= 70 mg/L all year
066Solids, settleableDAILY AV report only all year
066Solids, settleableDAILY MX <= .5 mL/L all year
066Iron, total [as Fe]DAILY AV <= 3 mg/L all year
066Iron, total [as Fe]DAILY MX <= 6 mg/L all year
066DurationMO TOTAL report only all year
066Flow, in conduit or thru treatment plantDAILY AV report only all year
066Flow, in conduit or thru treatment plantDAILY MX report only all year
066Precipitation volumeMO TOTAL report only all year
067pHDAILY MN >= 6 SU all year
067pHDAILY MX <= 9 SU all year
067Solids, total suspendedDAILY AV <= 35 mg/L all year
067Solids, total suspendedDAILY MX <= 70 mg/L all year
067Solids, settleableDAILY AV report only all year
067Solids, settleableDAILY MX <= .5 mL/L all year
067Iron, total [as Fe]DAILY AV <= 3 mg/L all year
067Iron, total [as Fe]DAILY MX <= 6 mg/L all year
067DurationMO TOTAL report only all year
067Flow, in conduit or thru treatment plantDAILY AV report only all year
067Flow, in conduit or thru treatment plantDAILY MX report only all year
067Precipitation volumeMO TOTAL report only all year
068pHDAILY MN >= 6 SU all year
068pHDAILY MX <= 9 SU all year
068Solids, total suspendedDAILY AV <= 35 mg/L all year
068Solids, total suspendedDAILY MX <= 70 mg/L all year
068Solids, settleableDAILY AV report only all year
068Solids, settleableDAILY MX <= .5 mL/L all year
068Iron, total [as Fe]DAILY AV <= 3 mg/L all year
068Iron, total [as Fe]DAILY MX <= 6 mg/L all year
068DurationMO TOTAL report only all year
068Flow, in conduit or thru treatment plantDAILY AV report only all year
068Flow, in conduit or thru treatment plantDAILY MX report only all year
068Precipitation volumeMO TOTAL report only all year
070pHDAILY MN >= 6 SU all year
070pHDAILY MX <= 9 SU all year
070Solids, total suspendedDAILY AV <= 35 mg/L all year
070Solids, total suspendedDAILY MX <= 70 mg/L all year
070Solids, settleableDAILY AV report only all year
070Solids, settleableDAILY MX <= .5 mL/L all year
070Iron, total [as Fe]DAILY AV <= 3 mg/L all year
070Iron, total [as Fe]DAILY MX <= 6 mg/L all year
070DurationMO TOTAL report only all year
070Flow, in conduit or thru treatment plantDAILY AV report only all year
070Flow, in conduit or thru treatment plantDAILY MX report only all year
070Precipitation volumeMO TOTAL report only all year
085pHDAILY MN >= 6 SU all year
085pHDAILY MX <= 9 SU all year
085Solids, total suspendedDAILY AV <= 35 mg/L all year
085Solids, total suspendedDAILY MX <= 70 mg/L all year
085Solids, settleableDAILY AV report only all year
085Solids, settleableDAILY MX <= .5 mL/L all year
085Iron, total [as Fe]DAILY AV <= 3 mg/L all year
085Iron, total [as Fe]DAILY MX <= 6 mg/L all year
085DurationMO TOTAL report only all year
085Flow, in conduit or thru treatment plantDAILY AV report only all year
085Flow, in conduit or thru treatment plantDAILY MX report only all year
085Precipitation volumeMO TOTAL report only all year
088pHDAILY MN >= 6 SU all year
088pHDAILY MX <= 9 SU all year
088Solids, total suspendedDAILY AV <= 35 mg/L all year
088Solids, total suspendedDAILY MX <= 70 mg/L all year
088Solids, settleableDAILY AV report only all year
088Solids, settleableDAILY MX <= .5 mL/L all year
088Iron, total [as Fe]DAILY AV <= 3 mg/L all year
088Iron, total [as Fe]DAILY MX <= 6 mg/L all year
088DurationMO TOTAL report only all year
088Flow, in conduit or thru treatment plantDAILY AV report only all year
088Flow, in conduit or thru treatment plantDAILY MX report only all year
088Precipitation volumeMO TOTAL report only all year
136pHDAILY MN >= 6 SU all year
136pHDAILY MX <= 9 SU all year
136Solids, total suspendedDAILY AV <= 35 mg/L all year
136Solids, total suspendedDAILY MX <= 70 mg/L all year
136Solids, settleableDAILY AV report only all year
136Solids, settleableDAILY MX <= .5 mL/L all year
136Iron, total [as Fe]DAILY AV <= 3 mg/L all year
136Iron, total [as Fe]DAILY MX <= 6 mg/L all year
136DurationMO TOTAL report only all year
136Flow, in conduit or thru treatment plantDAILY AV report only all year
136Flow, in conduit or thru treatment plantDAILY MX report only all year
136Precipitation volumeMO TOTAL 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