Hanging Rock Power Company LLC

NPDES permit OH0127931 · Major NON-POTW · effective, expires 2030-09-30 · 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

0values over a limit
0required values missing, on 0 form(s)
0of 38 forms filed late

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

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among OH permits in EPA's filings — check your permit).

Limits in force (51)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX report only all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 100 mg/L all year
001Oil and grease, hexane extr methodMO AVG report only all year
001Oil and grease, hexane extr methodDAILY MX report only all year
001Phosphorus, total [as P]MO AVG report only Jun, Dec
001Phosphorus, total [as P]DAILY MX report only Jun, Dec
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 residualDAILY MX <= .038 mg/L all year
001Mercury, total low levelMO AVG report only Jun, Dec
001Mercury, total low levelDAILY MX report only Jun, Dec
001Solids, total dissolved- 180 deg. CMO AVG report only all year
001Solids, total dissolved- 180 deg. CDAILY MX report only all year
601pHDAILY MN report only Mar, Jun, Sep, Dec
601pHDAILY MX report only Mar, Jun, Sep, Dec
601Solids, total suspendedMO AVG <= 30 mg/L Mar, Jun, Sep, Dec
601Solids, total suspendedDAILY MX <= 100 mg/L Mar, Jun, Sep, Dec
601Oil and grease, hexane extr methodMO AVG <= 15 mg/L Mar, Jun, Sep, Dec
601Oil and grease, hexane extr methodDAILY MX <= 20 mg/L Mar, Jun, Sep, Dec
601Flow, in conduit or thru treatment plantMO AVG report only Mar, Jun, Sep, Dec
601Flow, in conduit or thru treatment plantDAILY MX report only Mar, Jun, Sep, Dec
602pHDAILY MN report only Mar, Jun, Sep, Dec
602pHDAILY MX report only Mar, Jun, Sep, Dec
602Solids, total suspendedMO AVG <= 30 mg/L Mar, Jun, Sep, Dec
602Solids, total suspendedDAILY MX <= 100 mg/L Mar, Jun, Sep, Dec
602Oil and grease, hexane extr methodMO AVG <= 15 mg/L Mar, Jun, Sep, Dec
602Oil and grease, hexane extr methodDAILY MX <= 20 mg/L Mar, Jun, Sep, Dec
602Flow, in conduit or thru treatment plantMO AVG report only Mar, Jun, Sep, Dec
602Flow, in conduit or thru treatment plantDAILY MX report only Mar, Jun, Sep, Dec
603pHDAILY MN report only Mar, Jun, Sep, Dec
603pHDAILY MX report only Mar, Jun, Sep, Dec
603Solids, total suspendedMO AVG <= 30 mg/L Mar, Jun, Sep, Dec
603Solids, total suspendedDAILY MX <= 100 mg/L Mar, Jun, Sep, Dec
603Oil and grease, hexane extr methodMO AVG <= 15 mg/L Mar, Jun, Sep, Dec
603Oil and grease, hexane extr methodDAILY MX <= 20 mg/L Mar, Jun, Sep, Dec
603Flow, in conduit or thru treatment plantMO AVG report only Mar, Jun, Sep, Dec
603Flow, in conduit or thru treatment plantDAILY MX report only Mar, Jun, Sep, Dec
604pHDAILY MN report only Mar, Jun, Sep, Dec
604pHDAILY MX report only Mar, Jun, Sep, Dec
604Solids, total suspendedMO AVG <= 30 mg/L Mar, Jun, Sep, Dec
604Solids, total suspendedDAILY MX <= 100 mg/L Mar, Jun, Sep, Dec
604Oil and grease, hexane extr methodMO AVG <= 15 mg/L Mar, Jun, Sep, Dec
604Oil and grease, hexane extr methodDAILY MX <= 20 mg/L Mar, Jun, Sep, Dec
604Flow, in conduit or thru treatment plantMO AVG report only Mar, Jun, Sep, Dec
604Flow, in conduit or thru treatment plantDAILY MX report only Mar, Jun, Sep, Dec
801Flow, in conduit or thru treatment plantMO AVG report only all year
801Flow, 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