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Plastics Materials And Resins, Bay Saint Louis, Mississippi. NPDES permit MS0052485 expired Sep 30, 2026; its limits still apply. 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 | 004 |
| pH | maximum | ≤ 9 SU | all year | 004 |
| Oil & Grease | quarterly average | ≤ 10 mg/L | all year | 004 |
| Oil & Grease | quarterly maximum | ≤ 15 mg/L | all year | 004 |
| Flow, in conduit or thru treatment plant | quarterly average | report only (MGD) | all year | 004 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 004 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 007 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 007 |
| pH | minimum | ≥ 6 SU | all year | 007 |
| pH | maximum | ≤ 9 SU | all year | 007 |
| Solids, total suspended | monthly average | ≤ 45 mg/L | all year | 007 |
| Solids, total suspended | daily maximum | ≤ 68 mg/L | all year | 007 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 007 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 007 |
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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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MS0052485 · MCP: https://passage-data.com/mcp