General Motors LLC - Defiance

NPDES permit OH0002666 · Major NON-POTW · effective, expires 2030-05-31 · 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 22 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
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMO AVG <= 28.2 mg/L all year
001Solids, total suspendedDAILY MX <= 92.6 mg/L all year
001Solids, total suspendedMO AVG <= 97.7 kg/d all year
001Solids, total suspendedDAILY MX <= 247 kg/d all year
001Oil and grease, hexane extr methodMO AVG <= 14.4 mg/L all year
001Oil and grease, hexane extr methodDAILY MX <= 21.3 mg/L all year
001Oil and grease, hexane extr methodMO AVG <= 27.9 kg/d all year
001Oil and grease, hexane extr methodDAILY MX <= 83.6 kg/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 28.1 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 13.7 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 133 kg/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 65.1 kg/d May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG <= 1 mg/L all year
001Phosphorus, total [as P]WKLY MAX <= 1.5 mg/L all year
001Phosphorus, total [as P]MO AVG <= 7.42 kg/d all year
001Phosphorus, total [as P]WKLY MAX <= 11.2 kg/d all year
001Zinc, total recoverableMO AVG report only Mar, Jun, Aug, Dec
001Zinc, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
001Copper, total recoverableMO AVG report only Mar, Jun, Aug, Dec
001Copper, total recoverableDAILY MX report only Mar, Jun, Aug, Dec
001Oil & grease severityMO AVG report only all year
001Oil & grease severityDAILY MX report only 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 residualDAILY MX <= .038 mg/L all year
001Mercury, total low levelMO AVG report only all year
001Mercury, total low levelDAILY MX report only all year
001Solids, total dissolved- 180 deg. CMO AVG report only Mar, Jun, Aug, Dec
001Solids, total dissolved- 180 deg. CDAILY MX report only Mar, Jun, Aug, Dec
002pHDAILY MN report only all year
002pHDAILY MX report only all year
002Nitrogen, ammonia total [as N]MO AVG report only all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Selenium, total recoverableMO AVG report only all year
002Selenium, total recoverableDAILY MX report only all year
002Zinc, total recoverableMO AVG report only all year
002Zinc, total recoverableDAILY MX report only all year
002Lead, total recoverableMO AVG report only all year
002Lead, total recoverableDAILY MX report only all year
002Copper, total recoverableMO AVG report only all year
002Copper, total recoverableDAILY MX report only all year
002Mercury, total low levelMO AVG report only all year
002Mercury, total low levelDAILY MX report only all year
002Bypass VolumeMO AVG report only all year
002Bypass VolumeDAILY MX report only all year
002Bypass of treatmentMO AVG report only all year
002Bypass of treatmentDAILY 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