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Industrial Inorganic Chemicals, Magnolia, Arkansas. NPDES permit AR0038857, in force until Dec 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 86 deg F | all year | 004 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 2 mg/L | all year | 004 |
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | monthly average | ≤ 50 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 90 mg/L | all year | 004 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 004 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 004 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 004 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 004 |
| Lead, total recoverable | monthly average | ≤ 3.41 ug/L | all year | 004 |
| Lead, total recoverable | daily maximum | ≤ 7.62 ug/L | all year | 004 |
| Lead, total recoverable | monthly average | ≤ .0677 lb/d | all year | 004 |
| Lead, total recoverable | daily maximum | ≤ .16 lb/d | all year | 004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | 004 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 004 |
| Sulfate | monthly average | report only (mg/L) | all year | 004 |
| Sulfate | daily maximum | report only (mg/L) | all year | 004 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 02A |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 45 mg/L | all year | 02A |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 7.5 lb/d | all year | 02A |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 11 lb/d | all year | 02A |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 02A |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 02A |
| Coliform, fecal general | 30-day geometric mean | ≤ 1000 #/100mL | all year | 02A |
| Coliform, fecal general | 7-day geometric mean | ≤ 2000 #/100mL | all year | 02A |
| Whole Effluent Toxicity [WET] - C. dubia | 7-day minimum | ≥ 100 % | all year | TX4 |
| Whole Effluent Toxicity [WET] - C. dubia | 7-day minimum | ≥ 80 % | all year | TX4 |
| Whole Effluent Toxicity [WET] - P. promelas | 7-day minimum | ≥ 100 % | all year | TX4 |
| Whole Effluent Toxicity [WET] - P. promelas | 7-day minimum | ≥ 80 % | all year | TX4 |
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TX4 |
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TX4 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TX4 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TX4 |
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX4 |
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX4 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX4 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX4 |
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX4 |
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX4 |
Cited limits by parameter: Arkansas's rules and the federal ones.
Same industry: the 15 Chemicals and Allied Products permits in Arkansas.
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