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Gray And Ductile Iron Foundries, Saint Joseph, Michigan. NPDES permit MI0058659 expired Oct 1, 2023; its limits still apply. Last 12 months: no values over a limit, 18 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| pH | daily minimum | ≥ 6.5 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| trans-1,2-Dichloroethylene | daily maximum | ≤ 5 ug/L | all year |
| trans-1,2-Dichloroethylene | daily maximum | report only (ug/L) | all year |
| Vinyl chloride | daily maximum | ≤ 3 ug/L | all year |
| Vinyl chloride | daily maximum | report only (ug/L) | all year |
| Equipment inspection - visual | monthly maximum | report only (N=0;Y=1) | all year |
| Equipment inspection - visual | daily maximum | report only (N=0;Y=1) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Trichloroethene | daily maximum | ≤ 5 ug/L | all year |
| Trichloroethene | daily maximum | report only (ug/L) | all year |
| 1,2-cis-Dichloroethylene | daily maximum | ≤ 5 ug/L | all year |
| 1,2-cis-Dichloroethylene | daily maximum | report only (ug/L) | all year |
| cis-1,2-Dichloroethene | daily maximum | ≤ 5 ug/L | all year |
| cis-1,2-Dichloroethene | daily maximum | report only (ug/L) | all year |
| Outfall observation,visual, y/n response | monthly maximum | report only (N=0;Y=1) | all year |
| Outfall observation,visual, y/n response | daily maximum | report only (N=0;Y=1) | all year |
Cited limits by parameter: Michigan's rules and the federal ones.
Same industry: the 9 Primary Metal Industries permits in Michigan.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MI0058659 · MCP: https://passage-data.com/mcp