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Industrial Organic Chemicals, Mount Vernon, Indiana. NPDES permit IN0063312, in force until Mar 31, 2029. Last 12 months: over a limit 2 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| February 2026 | Temperature, water deg. fahrenheit, daily maximum | 57 deg F | ≤ 53 deg F | 8% |
| March 2026 | Temperature, water deg. fahrenheit, daily maximum | 70 deg F | ≤ 63 deg F | 11% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Apr, Nov |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Mar |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Jan, Feb |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | May |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Jun–Sep |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Oct |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | Dec |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 73 deg F | Apr, Nov |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 63 deg F | Mar |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 53 deg F | Jan, Feb |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 83 deg F | May |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 93 deg F | Jun–Sep |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 81 deg F | Oct |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 60 deg F | Dec |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 40 mg/L | all year |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year |
| Chloride [as Cl] | monthly average | ≤ 218 mg/L | all year |
| Chloride [as Cl] | daily maximum | ≤ 378 mg/L | all year |
| Sulfate, total [as SO4] | monthly average | ≤ 948 mg/L | all year |
| Sulfate, total [as SO4] | daily maximum | ≤ 1643 mg/L | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Chlorine, total residual | monthly average | < .06 mg/L | all year |
| Chlorine, total residual | daily maximum | < .06 mg/L | all year |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute (alert, not enforceable) | Apr, Oct |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute | Mar, Sep |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 1 tox chronic (alert, not enforceable) | Apr, Oct |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 1 tox chronic | Mar, Sep |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute (alert, not enforceable) | Apr, Oct |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute | Mar, Sep |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox chronic (alert, not enforceable) | Apr, Oct |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox chronic | Mar, Sep |
| Flow, total | monthly total | report only (Mgal/mo) | all year |
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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Your permit document is the final word. As JSON: /api/v1/permits/IN0063312 · MCP: https://passage-data.com/mcp