Center Coal Co

NPDES permit ND0025321 · Minor NON-POTW · effective, expires 2028-06-30 · 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

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

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 32 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (16)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY MN report only all year
001Solids, total suspendedMO AVG <= 35 mg/L all year
001Solids, total suspendedDAILY MX <= 70 mg/L all year
001Solids, settleableDAILY MN report only all year
001Solids, settleableMO AVG report only all year
001Solids, settleableDAILY MX <= .5 mL/L all year
001Oil & GreaseDAILY MX <= 10 mg/L all year
001Iron, total [as Fe]DAILY MN report only all year
001Iron, total [as Fe]MO AVG <= 3.5 mg/L all year
001Iron, total [as Fe]DAILY MX <= 7 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
001Flow, totalMO TOTAL report only all year
001Oil and grease visualTOTAL < 1 N=0;Y=1 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