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Industrial Organic Chemicals, Mount Vernon, Indiana. NPDES permit IN0063096, in force until Jul 31, 2029. Last 12 months: no values over a limit, 1 required value missing, 2 of 19 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Apr, Nov | 001 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Mar | 001 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Jan, Feb | 001 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | May | 001 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Jun–Sep | 001 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Oct | 001 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Dec | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 73 deg F | Apr, Nov | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 63 deg F | Mar | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 53 deg F | Jan, Feb | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 83 deg F | May | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 93 deg F | Jun–Sep | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 81 deg F | Oct | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 60 deg F | Dec | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| pH | semi-annual maximum | report only (SU) | Jun, Dec | 001 |
| pH | semi-annual maximum | report only (SU) | Jun, Dec | 001 |
| Solids, total suspended | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| Solids, total suspended | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 001 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 001 |
| Oil and grease, hexane extr method | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| Oil and grease, hexane extr method | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| Nitrite + Nitrate total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| Nitrite + Nitrate total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| Phosphorus, total [as P] | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| Phosphorus, total [as P] | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Chloride [as Cl] | monthly average | ≤ 218 mg/L | all year | 001 |
| Chloride [as Cl] | daily maximum | ≤ 378 mg/L | all year | 001 |
| Sulfate, total [as SO4] | monthly average | ≤ 948 mg/L | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1643 mg/L | all year | 001 |
| Iron, total recoverable | monthly average | ≤ 2.4 mg/L | all year | 001 |
| Iron, total recoverable | daily maximum | ≤ 4.1 mg/L | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | monthly average | < .06 mg/L | all year | 001 |
| Chlorine, total residual | daily maximum | < .06 mg/L | all year | 001 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total dissolved | monthly average | report only (lb/d) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (lb/d) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| Chemical Oxygen Demand [COD] | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| Chemical Oxygen Demand [COD] | semi-annual maximum | report only (mg/L) | Jun, Dec | 001 |
| Storm water flow | semi-annual maximum | report only (Mgal/6mo) | Jun, Dec | 001 |
| Storm water flow | semi-annual maximum | report only (Mgal/6mo) | Jun, Dec | 001 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 001 |
| pH | semi-annual maximum | report only (SU) | Jun, Dec | 002 |
| pH | semi-annual maximum | report only (SU) | Jun, Dec | 002 |
| Solids, total suspended | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| Solids, total suspended | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| Oil and grease, hexane extr method | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| Oil and grease, hexane extr method | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| Nitrogen, Kjeldahl, total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| Nitrogen, Kjeldahl, total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| Nitrite + Nitrate total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| Nitrite + Nitrate total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| Phosphorus, total [as P] | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| Phosphorus, total [as P] | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| Chemical Oxygen Demand [COD] | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| Chemical Oxygen Demand [COD] | semi-annual maximum | report only (mg/L) | Jun, Dec | 002 |
| Storm water flow | semi-annual maximum | report only (Mgal/6mo) | Jun, Dec | 002 |
| Storm water flow | semi-annual maximum | report only (Mgal/6mo) | Jun, Dec | 002 |
| pH | semi-annual maximum | report only (SU) | Jun, Dec | 003 |
| pH | semi-annual maximum | report only (SU) | Jun, Dec | 003 |
| Solids, total suspended | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| Solids, total suspended | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| Oil and grease, hexane extr method | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| Oil and grease, hexane extr method | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| Nitrogen, Kjeldahl, total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| Nitrogen, Kjeldahl, total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| Nitrite + Nitrate total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| Nitrite + Nitrate total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| Phosphorus, total [as P] | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| Phosphorus, total [as P] | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| BOD, carbonaceous [5 day, 20 C] | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| BOD, carbonaceous [5 day, 20 C] | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| Chemical Oxygen Demand [COD] | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| Chemical Oxygen Demand [COD] | semi-annual maximum | report only (mg/L) | Jun, Dec | 003 |
| Storm water flow | semi-annual maximum | report only (Mgal/6mo) | Jun, Dec | 003 |
| Storm water flow | semi-annual maximum | report only (Mgal/6mo) | Jun, Dec | 003 |
| pH | semi-annual maximum | report only (SU) | Jun, Dec | 004 |
| pH | semi-annual maximum | report only (SU) | Jun, Dec | 004 |
| Solids, total suspended | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| Solids, total suspended | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| Oil and grease, hexane extr method | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| Oil and grease, hexane extr method | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| Nitrogen, Kjeldahl, total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| Nitrogen, Kjeldahl, total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| Nitrite + Nitrate total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| Nitrite + Nitrate total [as N] | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| Phosphorus, total [as P] | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| Phosphorus, total [as P] | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| BOD, carbonaceous [5 day, 20 C] | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| BOD, carbonaceous [5 day, 20 C] | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| Chemical Oxygen Demand [COD] | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| Chemical Oxygen Demand [COD] | semi-annual maximum | report only (mg/L) | Jun, Dec | 004 |
| Storm water flow | semi-annual maximum | report only (Mgal/6mo) | Jun, Dec | 004 |
| Storm water flow | semi-annual maximum | report only (Mgal/6mo) | Jun, Dec | 004 |
Cited limits by parameter: Indiana's rules and the federal ones.
Same industry: the 45 Chemicals and Allied Products permits in Indiana.
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