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Special Trade Contractors, Shreveport, Louisiana. NPDES permit LA0127844, in force until May 31, 2031. Last 12 months: no values over a limit, 4 required values missing, 3 of 4 reports late. 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 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 001 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 001 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 001 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 001 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 001 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 001 |
| Nickel, total [as Ni] | monthly average | report only (ug/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (ug/L) | all year | 001 |
| Zinc, total [as Zn] | monthly average | report only (ug/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | 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 |
| pH | instantaneous minimum | ≥ 6 SU | all year | 002 |
| pH | instantaneous maximum | ≤ 9 SU | all year | 002 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 002 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 50 mg/L | all year | 002 |
| Arsenic, total [as As] | monthly average | report only (ug/L) | all year | 002 |
| Arsenic, total [as As] | daily maximum | report only (ug/L) | all year | 002 |
| Chromium, total [as Cr] | monthly average | report only (ug/L) | all year | 002 |
| Chromium, total [as Cr] | daily maximum | report only (ug/L) | all year | 002 |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year | 002 |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year | 002 |
| Lead, total [as Pb] | monthly average | report only (ug/L) | all year | 002 |
| Lead, total [as Pb] | daily maximum | report only (ug/L) | all year | 002 |
| Nickel, total [as Ni] | monthly average | report only (ug/L) | all year | 002 |
| Nickel, total [as Ni] | daily maximum | report only (ug/L) | all year | 002 |
| Zinc, total [as Zn] | monthly average | report only (ug/L) | all year | 002 |
| Zinc, total [as Zn] | daily maximum | report only (ug/L) | all year | 002 |
| Selenium, total [as Se] | monthly average | report only (ug/L) | all year | 002 |
| Selenium, total [as Se] | daily maximum | report only (ug/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 101 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 101 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 101 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 101 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 101 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 101 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 101 |
| Phosphorus, total [as P] | daily maximum | report only (mg/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 | 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 |
| 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.
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Your permit document is the final word. As JSON: /api/v1/permits/LA0127844 · MCP: https://passage-data.com/mcp