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Crushed And Broken Limestone, Joliet, Illinois. NPDES permit IL0061115, in force until Nov 30, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | monthly minimum | ≥ 6.5 SU | all year | 002 |
| pH | monthly maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 002 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 002 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1699 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Offensive Conditions | value | report only (N=0;Y=1) | all year | 002 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 003 |
| pH | monthly maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | 30-day average | ≤ 35 mg/L | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 003 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 003 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 003 |
| Sulfate, total [as SO4] | daily maximum | ≤ 1699 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Offensive Conditions | value | report only (N=0;Y=1) | all year | 003 |
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/IL0061115 · MCP: https://passage-data.com/mcp