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Chemical And Fertilizer Mining, Cave-In-Rock, Illinois. NPDES permit IL0004260 expired Apr 30, 2021; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | monthly minimum | report only (SU) | all year | DSMP |
| pH | monthly maximum | report only (SU) | all year | DSMP |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | DSMP |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | DSMP |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | DSMP |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | DSMP |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | DSMP |
| Hardness, Ca Mg Calculated [mg/L as CaCO3] | daily maximum | report only (mg/L) | all year | DSMP |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | DSMP |
| pH | monthly minimum | report only (SU) | all year | USMP |
| pH | monthly maximum | report only (SU) | all year | USMP |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | USMP |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | USMP |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | USMP |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | USMP |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | USMP |
| Hardness, Ca Mg Calculated [mg/L as CaCO3] | daily maximum | report only (mg/L) | all year | USMP |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | USMP |
Cited limits by parameter: Illinois's rules and the federal ones.
Same industry: the 24 Mining and Quarrying of Nonmetallic Minerals permits in Illinois.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/IL0004260 · MCP: https://passage-data.com/mcp