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Agricultural Chemicals, Tunica, Mississippi. NPDES permit MS0037621, in force until Feb 28, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Arsenic, total recoverable | annual average | report only (mg/L) | all year | 003 |
| Arsenic, total recoverable | annual maximum | ≤ .36 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | annual average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Chemical Oxygen Demand [COD] | annual average | report only (mg/L) | all year | 003 |
| Chemical Oxygen Demand [COD] | annual maximum | report only (mg/L) | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | maximum | ≤ 9 SU | all year | 004 |
| Arsenic, total recoverable | annual average | report only (mg/L) | all year | 004 |
| Arsenic, total recoverable | annual maximum | ≤ .36 mg/L | all year | 004 |
| Flow, in conduit or thru treatment plant | annual average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | annual maximum | report only (MGD) | all year | 004 |
| Chemical Oxygen Demand [COD] | annual average | report only (mg/L) | all year | 004 |
| Chemical Oxygen Demand [COD] | annual maximum | report only (mg/L) | all year | 004 |
Cited limits by parameter: Mississippi's rules and the federal ones.
Same industry: the 23 Chemicals and Allied Products permits in Mississippi.
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