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Nitrogenous Fertilizers, Helena, Arkansas. NPDES permit AR0052027, in force until Feb 28, 2030. Last 12 months: no values over a limit, 6 of 22 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 001 |
| Solids, total suspended | daily maximum | report only (lb/d) | all year | 001 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Oil & Grease | monthly average | report only (lb/d) | all year | 001 |
| Oil & Grease | daily maximum | report only (lb/d) | 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 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 01A |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 01A |
| BOD, 5-day, 20 deg. C | monthly average | report only (lb/d) | all year | 01A |
| BOD, 5-day, 20 deg. C | daily maximum | report only (lb/d) | all year | 01A |
| pH | minimum | report only (SU) | all year | 01A |
| pH | maximum | report only (SU) | all year | 01A |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 01A |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 01A |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 01A |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 01A |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 01A |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 01A |
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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