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Cement, Hydraulic, major discharger, Cape Girardeau, Missouri. NPDES permit MO0000809 expired Jun 30, 2024; its limits still apply. Last 12 months: over a limit 4 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| March 2026 | 003 | Nitrogen, ammonia total [as N], daily maximum | 23.1 | ≤ 7.5 mg/L | 208% |
| March 2026 | 003 | Nitrogen, ammonia total [as N], monthly average | 23.1 | ≤ 2.9 mg/L | 697% |
| June 2026 | 001 | Solids, total suspended, daily maximum | 63.3 | ≤ 50 mg/L | 27% |
| June 2026 | 001 | Solids, total suspended, monthly average | 63.3 | ≤ 50 mg/L | 27% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 001 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 50 mg/L | all year | 001 |
| Solids, settleable | daily maximum | ≤ 1.5 mL/L | all year | 001 |
| Solids, settleable | monthly average | ≤ 1 mL/L | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 001 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 001 |
| Chloride | daily maximum | report only (mg/L) | all year | 001 |
| Chloride | monthly average | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | report only (toxic) | all year | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | report only (toxic) | all year | 001 |
| Chlorides + Sulfates | daily maximum | report only (mg/L) | all year | 001 |
| Chlorides + Sulfates | monthly average | report only (mg/L) | all year | 001 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 002 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 002 |
| Solids, total suspended | monthly average | ≤ 50 mg/L | all year | 002 |
| Solids, settleable | daily maximum | ≤ 1.5 mL/L | all year | 002 |
| Solids, settleable | monthly average | ≤ 1 mL/L | all year | 002 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 002 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 002 |
| Chloride | daily maximum | report only (mg/L) | all year | 002 |
| Chloride | monthly average | report only (mg/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | report only (toxic) | all year | 002 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | report only (toxic) | all year | 002 |
| Chlorides + Sulfates | daily maximum | report only (mg/L) | all year | 002 |
| Chlorides + Sulfates | monthly average | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 45 mg/L | all year | 003 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 003 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.6 mg/L | Apr–Sep | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.5 mg/L | Jan, Feb, Mar, Oct, Nov, Dec | 003 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.4 mg/L | Apr–Sep | 003 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.9 mg/L | Jan, Feb, Mar, Oct, Nov, Dec | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| E. coli | daily maximum | ≤ 1030 #/100mL | Apr–Dec | 003 |
| E. coli | 30-day geometric mean | ≤ 206 #/100mL | Apr–Dec | 003 |
| pH | minimum | ≥ 6 SU | all year | 005 |
| pH | maximum | ≤ 9 SU | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 005 |
| pH | minimum | ≥ 6 SU | all year | 007 |
| pH | maximum | ≤ 9 SU | all year | 007 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 007 |
| Storm water flow | daily maximum | report only (MGD) | all year | 007 |
| pH | minimum | ≥ 6 SU | all year | 008 |
| pH | maximum | ≤ 9 SU | all year | 008 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 008 |
| Storm water flow | daily maximum | report only (MGD) | all year | 008 |
Cited limits by parameter: Missouri's rules and the federal ones.
Same industry: the 12 Stone, Clay, Glass and Concrete Products permits in Missouri.
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