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Heavy Construction, Marseilles, Illinois. NPDES permit IL0080066, in force until Aug 31, 2030. Last 12 months: no values over a limit, 2 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | monthly minimum | ≥ 6 SU | all year | 001 |
| pH | monthly maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 001 |
| Benzene | daily maximum | ≤ .05 mg/L | all year | 001 |
| Priority Pollutants | daily maximum | ≤ .1 mg/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 | monthly minimum | ≥ 6 SU | all year | 002 |
| pH | monthly maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 002 |
| Benzene | daily maximum | ≤ .05 mg/L | all year | 002 |
| Priority Pollutants | daily maximum | ≤ .1 mg/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 |
Cited limits by parameter: Illinois's rules and the federal ones.
Same industry: the 3 Heavy Construction 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/IL0080066 · MCP: https://passage-data.com/mcp