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Piketon Depleted Uranium Hexafluoride (DUF6) Conv

Industrial Inorganic Chemicals, Piketon, Ohio. NPDES permit OH0135241, in force until Oct 31, 2029. Last 12 months: over a limit 5 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (18 values), outfall 003 form A monthly (20 values), outfall 005 form A monthly (6 values), outfall 602 form A monthly (4 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingOutfallParameterReportedLimitOver by
March 2026005Solids, total suspended, daily maximum238≤ 15 mg/L1487%
March 2026005Solids, total suspended, monthly average116≤ 10 mg/L1060%
June 2026003E. coli, MTEC-MF, daily maximum2420≤ 284 MPN/100mL752%
June 2026003Mercury, total low level, monthly average18.7≤ 12 ng/L56%
July 2026003Mercury, total low level, monthly average15.4≤ 12 ng/L28%

Limits in force (86)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly average≤ 64 deg FApr001
Temperature, water deg. fahrenheitmonthly average≤ 54 deg FMar001
Temperature, water deg. fahrenheitmonthly average≤ 52 deg FDec001
Temperature, water deg. fahrenheitmonthly average≤ 67 deg FNov001
Temperature, water deg. fahrenheitmonthly average≤ 77 deg FOct001
Temperature, water deg. fahrenheitmonthly average≤ 45 deg FJan, Feb001
Temperature, water deg. fahrenheitmonthly average≤ 84 deg FSep001
Temperature, water deg. fahrenheitmonthly average≤ 84 deg FAug001
Temperature, water deg. fahrenheitmonthly average≤ 84 deg FJul001
Temperature, water deg. fahrenheitmonthly average≤ 83 deg FJun001
Temperature, water deg. fahrenheitmonthly average≤ 75 deg FMay001
Temperature, water deg. fahrenheitdaily maximum≤ 69 deg FApr001
Temperature, water deg. fahrenheitdaily maximum≤ 59 deg FMar001
Temperature, water deg. fahrenheitdaily maximum≤ 57 deg FDec001
Temperature, water deg. fahrenheitdaily maximum≤ 72 deg FNov001
Temperature, water deg. fahrenheitdaily maximum≤ 82 deg FOct001
Temperature, water deg. fahrenheitdaily maximum≤ 50 deg FJan, Feb001
Temperature, water deg. fahrenheitdaily maximum≤ 87 deg FSep001
Temperature, water deg. fahrenheitdaily maximum≤ 89 deg FAug001
Temperature, water deg. fahrenheitdaily maximum≤ 89 deg FJul001
Temperature, water deg. fahrenheitdaily maximum≤ 87 deg FJun001
Temperature, water deg. fahrenheitdaily maximum≤ 80 deg FMay001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendeddaily maximum≤ 45 mg/Lall year001
Oil and grease, hexane extr methodmonthly averagereport only (mg/L)all year001
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualdaily maximum≤ .019 mg/Lall year001
Solids, total dissolved- 180 deg. Cdaily maximum≤ 1500 mg/Lall year001
pHdaily minimum≥ 6.5 SUall year003
pHdaily maximum≤ 9 SUall year003
Solids, total suspendedmonthly average≤ 12 mg/Lall year003
Solids, total suspendeddaily maximum≤ 18 mg/Lall year003
Solids, total suspendedmonthly average≤ 17.8 kg/dall year003
Solids, total suspendeddaily maximum≤ 26.6 kg/dall year003
Oil and grease, hexane extr methodmonthly averagereport only (mg/L)Feb, May, Jul, Nov003
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Feb, May, Jul, Nov003
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year003
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year003
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Feb, May, Jul, Nov003
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Feb, May, Jul, Nov003
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLMay–Oct003
E. coli, MTEC-MFdaily maximum≤ 284 MPN/100mLMay–Oct003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
Mercury, total low levelmonthly average≤ 12 ng/Lall year003
Mercury, total low leveldaily maximum≤ 1700 ng/Lall year003
Mercury, total low levelmonthly average≤ .000018 kg/dall year003
Mercury, total low leveldaily maximum≤ .0025 kg/dall year003
Toxicity [acute], Ceriodaphnia dubiamonthly averagereport only (tox acute)Jul003
Toxicity [acute], Ceriodaphnia dubiadaily maximumreport only (tox acute)Jul003
Toxicity [acute], Pimephales promelas [Fathead Minnow]monthly averagereport only (tox acute)Jul003
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximumreport only (tox acute)Jul003
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year003
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/Lall year003
BOD, carbonaceous [5 day, 20 C]monthly average≤ 14.8 kg/dall year003
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 22.2 kg/dall year003
pHdaily minimum≥ 6.5 SUall year005
pHdaily maximum≤ 9 SUall year005
Solids, total suspendedmonthly average≤ 10 mg/Lall year005
Solids, total suspendeddaily maximum≤ 15 mg/Lall year005
Selenium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec005
Selenium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec005
Silver total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec005
Silver total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec005
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005
Mercury, total low levelmonthly averagereport only (ng/L)Mar, Jun, Aug, Dec005
Mercury, total low leveldaily maximumreport only (ng/L)Mar, Jun, Aug, Dec005
Flow ratemonthly averagereport only (gal/d)all year602
Flow ratedaily maximumreport only (gal/d)all year602
pHdaily minimumreport only (SU)all year602
pHdaily maximumreport only (SU)all year602
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiamonthly averagereport only (%)Jul801
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiadaily maximumreport only (%)Jul801
%Effect Static Renewal 96Hr Acute Pimephales promelasmonthly averagereport only (%)Jul801
%Effect Static Renewal 96Hr Acute Pimephales promelasdaily maximumreport only (%)Jul801

How strict are these limits?

Cited limits by parameter: Ohio's rules and the federal ones.

Same industry: the 68 Chemicals and Allied Products permits in Ohio.

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Your permit document is the final word. As JSON: /api/v1/permits/OH0135241 · MCP: https://passage-data.com/mcp