Sterling Mining Corp

NPDES permit OH0120405 · Minor NON-POTW · effective, expires 2029-02-28 · 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 22 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (36)

OutfallParameterStatisticLimitMonths
003pHDAILY MN >= 6.5 SU all year
003pHDAILY MX <= 9.5 SU all year
003Solids, total suspendedWKLY MAX <= 35 mg/L all year
003Solids, total suspendedDAILY MX <= 70 mg/L all year
003Hardness, total [as CaCO3]MO AVG report only Dec
003Hardness, total [as CaCO3]DAILY MX report only Dec
003Chloride [as Cl]MO AVG report only Dec
003Chloride [as Cl]DAILY MX report only Dec
003Sulfate, total [as SO4]MO AVG report only Dec
003Sulfate, total [as SO4]DAILY MX report only Dec
003Iron, total [as Fe]WKLY MAX <= 3000 ug/L all year
003Iron, total [as Fe]DAILY MX <= 6000 ug/L all year
003Manganese, total [as Mn]WKLY MAX <= 2000 ug/L all year
003Manganese, total [as Mn]DAILY MX <= 4000 ug/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 dissolved- 180 deg. CMO AVG report only Dec
003Solids, total dissolved- 180 deg. CDAILY MX report only Dec
005pHDAILY MN >= 6.5 SU all year
005pHDAILY MX <= 9.5 SU all year
005Solids, total suspendedMO AVG <= 35 mg/L all year
005Solids, total suspendedDAILY MX <= 70 mg/L all year
005Hardness, total [as CaCO3]MO AVG report only Dec
005Hardness, total [as CaCO3]DAILY MX report only Dec
005Chloride [as Cl]MO AVG report only Dec
005Chloride [as Cl]DAILY MX report only Dec
005Sulfate, total [as SO4]MO AVG report only Dec
005Sulfate, total [as SO4]DAILY MX report only Dec
005Iron, total [as Fe]MO AVG <= 3000 ug/L all year
005Iron, total [as Fe]DAILY MX <= 6000 ug/L all year
005Manganese, total [as Mn]MO AVG <= 2000 ug/L all year
005Manganese, total [as Mn]DAILY MX <= 4000 ug/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 dissolved- 180 deg. CMO AVG report only Dec
005Solids, total dissolved- 180 deg. CDAILY MX report only Dec

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