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Natural Gas Transmission, Franklinton, Louisiana. NPDES permit LA0104906, in force until Mar 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | instantaneous minimum | ≥ 6 SU | all year | 001 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 001 |
| Zinc, total [as Zn] | monthly average | ≤ 86.09 ug/L | all year | 001 |
| Zinc, total [as Zn] | daily maximum | ≤ 204.4 ug/L | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 125 mg/L | all year | 101 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 101 |
| Flow, in conduit or thru treatment plant | monthly average | report only (gal/d) | all year | 101 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 101 |
Cited limits by parameter: Louisiana's rules and the federal ones.
Same industry: the 10 Natural Gas Transmission permits in Louisiana.
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