COOPERATIVE ENERGY, SILVER CREEK GENERATING PLANT

NPDES permit MS0058033 · Minor NON-POTW · administratively continued, expires 2024-10-31 · 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.

This permit expired on 2024-10-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

1values over a limit
0required values missing, on 0 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Temperature, water deg. fahrenheit (1).

Reporting

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

Limits in force (22)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX <= 90 deg F all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 1.2 lb/d all year
001Solids, total suspendedDAILY MX <= 1.8 lb/d all year
001Oil & GreaseMO AVG <= 15 mg/L all year
001Oil & GreaseDAILY MX <= 20 mg/L all year
001Oil & GreaseMO AVG <= .6 lb/d all year
001Oil & GreaseDAILY MX <= .8 lb/d 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
001Chlorine, total residualMO AVG <= .011 mg/L all year
001Chlorine, total residualDAILY MX <= .019 mg/L all year
001Chlorine, total residualMO AVG <= .00044 lb/d all year
001Chlorine, total residualDAILY MX <= .00076 lb/d all year
001Solids, total dissolvedMO AVG <= 750 mg/L all year
001Solids, total dissolvedDAILY MX <= 1500 mg/L all year
001Solids, total dissolvedMO AVG <= 30.02 lb/d all year
001Solids, total dissolvedDAILY MX <= 60.05 lb/d 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