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Crushed And Broken Limestone, Gravette, Arkansas. NPDES permit AR0046639 expired Jan 31, 2026; its limits still apply. Last 12 months: no values over a limit, 14 of 20 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Turbidity | monthly average | ≤ 10 NTU | all year | 001 |
| Turbidity | daily maximum | report only (NTU) | all year | 001 |
| Oxygen demand, chem. [low level] [COD] | monthly average | ≤ 50 mg/L | all year | 001 |
| Oxygen demand, chem. [low level] [COD] | daily maximum | ≤ 75 mg/L | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 001 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 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 |
| Solids, total dissolved | monthly average | ≤ 500 mg/L | all year | 001 |
| Solids, total dissolved | daily maximum | ≤ 500 mg/L | all year | 001 |
| Turbidity | monthly average | ≤ 10 NTU | all year | 002 |
| Turbidity | daily maximum | report only (NTU) | all year | 002 |
| Oxygen demand, chem. [low level] [COD] | monthly average | ≤ 50 mg/L | all year | 002 |
| Oxygen demand, chem. [low level] [COD] | daily maximum | ≤ 75 mg/L | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year | 002 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 002 |
| Oil & Grease | daily maximum | ≤ 15 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 |
| Solids, total dissolved | monthly average | ≤ 500 mg/L | all year | 002 |
| Solids, total dissolved | daily maximum | ≤ 500 mg/L | all year | 002 |
Cited limits by parameter: Arkansas's rules and the federal ones.
Same industry: the 30 Mining and Quarrying of Nonmetallic Minerals permits in Arkansas.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/AR0046639 · MCP: https://passage-data.com/mcp