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Construction Sand And Gravel, Lapeer, Michigan. NPDES permit MI0060256 expired Oct 1, 2024; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | = 6 mg/L | Jun–Nov | 001 |
| Oxygen, dissolved [DO] | daily minimum | = 3 mg/L | Jan, Feb, Mar, Apr, May, Dec | 001 |
| pH | daily minimum | = 6.5 SU | all year | 001 |
| pH | daily maximum | = 9 SU | all year | 001 |
| Solids, total suspended | monthly average | = 40 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | = 80 mg/L | all year | 001 |
| Solids, total suspended | monthly average | = 11 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | = 22 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | = 5 mg/L | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | = 10 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | = 2 mg/L | Jun–Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | = 1.4 lb/d | May | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | = 2.8 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | = .6 lb/d | Jun–Nov | 001 |
| Phosphorus, total [as P] | monthly average | = 1 mg/L | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | = .27 lb/d | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | 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 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total dissolved | daily maximum | report only (lb/d) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | = 10 mg/L | Jun–Aug | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | = 70 mg/L | May | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | = 13 mg/L | Sep–Nov | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | = 2.8 lb/d | Jun–Aug | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | = 19 lb/d | May | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | = 3.6 lb/d | Sep–Nov | 001 |
| Outfall observation,visual, y/n response | value | report only (N=0;Y=1) | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | = 3 mg/L | Jan, Feb, Mar, Apr, May, Dec | 002 |
| Oxygen, dissolved [DO] | daily minimum | = 6 mg/L | Jun–Nov | 002 |
| pH | daily minimum | = 6.5 SU | all year | 002 |
| pH | daily maximum | = 9 SU | all year | 002 |
| Solids, total suspended | monthly average | = 40 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | = 80 mg/L | all year | 002 |
| Solids, total suspended | monthly average | = 5.3 lb/d | all year | 002 |
| Solids, total suspended | daily maximum | = 11 lb/d | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | = 10 mg/L | Jan, Feb, Mar, Apr, Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | = 2 mg/L | Jun–Nov | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | = 5 mg/L | May | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | = 1.3 lb/d | Jan, Feb, Mar, Apr, Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | = .27 lb/d | Jun–Nov | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | = .7 lb/d | May | 002 |
| Phosphorus, total [as P] | monthly average | = 1 mg/L | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | = .13 lb/d | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | 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 |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year | 002 |
| Solids, total dissolved | daily maximum | report only (lb/d) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | = 10 mg/L | Jun–Aug | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | = 70 mg/L | May | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | = 13 mg/L | Sep–Nov | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | = 1.3 lb/d | Jun–Aug | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | = 9.3 lb/d | May | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (lb/d) | Jan, Feb, Mar, Apr, Dec | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | = 1.7 lb/d | Sep–Nov | 002 |
| Outfall observation,visual, y/n response | value | report only (N=0;Y=1) | all year | 002 |
Cited limits by parameter: Michigan's rules and the federal ones.
Same industry: the 17 Mining and Quarrying of Nonmetallic Minerals permits in Michigan.
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Your permit document is the final word. As JSON: /api/v1/permits/MI0060256 · MCP: https://passage-data.com/mcp