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Coal Mining Services, De Kalb, Mississippi. NPDES permit MS0061689, in force until Jan 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Specific conductance | annual average | report only (umho/cm) | all year | 101 |
| Specific conductance | daily maximum | ≤ 1000 umho/cm | all year | 101 |
| Rainfall duration | annual average | report only (hr) | all year | 101 |
| Rainfall duration | daily maximum | report only (hr) | all year | 101 |
| pH | minimum | ≥ 6 SU | all year | 101 |
| pH | maximum | ≤ 9 SU | all year | 101 |
| Solids, total suspended | annual average | ≤ 35 mg/L | all year | 101 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 101 |
| Solids, settleable | maximum | ≤ .5 mL/L | all year | 101 |
| Rainfall | annual average | report only (in) | all year | 101 |
| Rainfall | daily maximum | report only (in) | all year | 101 |
| Flow, in conduit or thru treatment plant | annual average | report only (MGD) | all year | 101 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 101 |
| Specific conductance | annual average | report only (umho/cm) | all year | 102 |
| Specific conductance | daily maximum | ≤ 1000 umho/cm | all year | 102 |
| Rainfall duration | annual average | report only (hr) | all year | 102 |
| Rainfall duration | daily maximum | report only (hr) | all year | 102 |
| pH | minimum | ≥ 6 SU | all year | 102 |
| pH | maximum | ≤ 9 SU | all year | 102 |
| Solids, total suspended | annual average | ≤ 35 mg/L | all year | 102 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 102 |
| Solids, settleable | maximum | ≤ .5 mL/L | all year | 102 |
| Rainfall | annual average | report only (in) | all year | 102 |
| Rainfall | daily maximum | report only (in) | all year | 102 |
| Flow, in conduit or thru treatment plant | annual average | report only (MGD) | all year | 102 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 102 |
| Specific conductance | annual average | report only (umho/cm) | all year | 201 |
| Specific conductance | daily maximum | ≤ 1000 umho/cm | all year | 201 |
| Rainfall duration | annual average | report only (hr) | all year | 201 |
| Rainfall duration | daily maximum | report only (hr) | all year | 201 |
| pH | minimum | ≥ 6 SU | all year | 201 |
| pH | maximum | ≤ 9 SU | all year | 201 |
| Solids, total suspended | annual average | ≤ 35 mg/L | all year | 201 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 201 |
| Solids, settleable | maximum | ≤ .5 mL/L | all year | 201 |
| Rainfall | annual average | report only (in) | all year | 201 |
| Rainfall | daily maximum | report only (in) | all year | 201 |
| Flow, in conduit or thru treatment plant | annual average | report only (MGD) | all year | 201 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 201 |
| Specific conductance | annual average | report only (umho/cm) | all year | 202 |
| Specific conductance | daily maximum | ≤ 1000 umho/cm | all year | 202 |
| Rainfall duration | annual average | report only (hr) | all year | 202 |
| Rainfall duration | daily maximum | report only (hr) | all year | 202 |
| pH | minimum | ≥ 6 SU | all year | 202 |
| pH | maximum | ≤ 9 SU | all year | 202 |
| Solids, total suspended | annual average | ≤ 35 mg/L | all year | 202 |
| Solids, total suspended | daily maximum | ≤ 70 mg/L | all year | 202 |
| Solids, settleable | maximum | ≤ .5 mL/L | all year | 202 |
| Rainfall | annual average | report only (in) | all year | 202 |
| Rainfall | daily maximum | report only (in) | all year | 202 |
| Flow, in conduit or thru treatment plant | annual average | report only (MGD) | all year | 202 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 202 |
Cited limits by parameter: Mississippi's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MS0061689 · MCP: https://passage-data.com/mcp