Carmeuse Lime, Inc - Maple Grove Operation

NPDES permit OH0000477 · Minor NON-POTW · effective, expires 2029-07-31 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 33 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 (42)

OutfallParameterStatisticLimitMonths
002pHDAILY MN >= 6.5 SU all year
002pHDAILY MX <= 9 SU all year
002Solids, total suspendedMO AVG <= 30 mg/L all year
002Solids, total suspendedDAILY MX <= 45 mg/L all year
002Solids, total suspendedMO AVG <= 66 kg/d all year
002Solids, total suspendedDAILY MX <= 99 kg/d all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
003pHDAILY MN >= 6.5 SU all year
003pHDAILY MX <= 9 SU all year
003Solids, total suspendedMO AVG <= 30 mg/L all year
003Solids, total suspendedDAILY MX <= 45 mg/L all year
003Solids, total suspendedMO AVG <= 56.9 kg/d all year
003Solids, total suspendedDAILY MX <= 85.3 kg/d 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
603Flow rateMO AVG report only Jun, Aug
603Flow rateDAILY MX report only Jun, Aug
603Oxygen, dissolved [DO]DAILY MN >= 6 mg/L Mar, Jun, Aug, Dec
603pHDAILY MN >= 6.5 SU Mar, Jun, Aug, Dec
603pHDAILY MX <= 9 SU Mar, Jun, Aug, Dec
603Solids, total suspendedMO AVG <= 12 mg/L Mar, Jun, Aug, Dec
603Solids, total suspendedWKLY MAX <= 18 mg/L Mar, Jun, Aug, Dec
603Solids, total suspendedMO AVG <= .114 kg/d Mar, Jun, Aug, Dec
603Solids, total suspendedWKLY MAX <= .171 kg/d Mar, Jun, Aug, Dec
603Nitrogen, ammonia total [as N]MO AVG <= 1 mg/L Jun, Aug
603Nitrogen, ammonia total [as N]MO AVG <= 3 mg/L Mar, Dec
603Nitrogen, ammonia total [as N]WKLY MAX <= 1.5 mg/L Jun, Aug
603Nitrogen, ammonia total [as N]WKLY MAX <= 4.5 mg/L Mar, Dec
603Nitrogen, ammonia total [as N]MO AVG <= .0095 kg/d Jun, Aug
603Nitrogen, ammonia total [as N]MO AVG <= .0284 kg/d Mar, Dec
603Nitrogen, ammonia total [as N]WKLY MAX <= .0142 kg/d Jun, Aug
603Nitrogen, ammonia total [as N]WKLY MAX <= .0426 kg/d Mar, Dec
603Turbidity [severity]MO AVG report only all year
603Turbidity [severity]DAILY MX report only all year
603E. coli, MTEC-MFMO GEOMN <= 126 MPN/100mL Jun, Aug
603E. coli, MTEC-MFWK GEOMN <= 284 MPN/100mL Jun, Aug
603Chlorine, total residualDAILY MX <= .019 mg/L Jun, Aug
603BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L Mar, Jun, Aug, Dec
603BOD, carbonaceous [5 day, 20 C]WKLY MAX <= 15 mg/L Mar, Jun, Aug, Dec
603BOD, carbonaceous [5 day, 20 C]MO AVG <= .0947 kg/d Mar, Jun, Aug, Dec
603BOD, carbonaceous [5 day, 20 C]WKLY MAX <= .142 kg/d Mar, Jun, Aug, 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