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Steel Pipe And Tubes, Blytheville, Arkansas. NPDES permit AR0049166 expired Jun 30, 2026; its limits still apply. Last 12 months: no values over a limit, 6 of 33 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 89.6 deg F | 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 |
| Oxygen demand, chem. [low level] [COD] | monthly average | ≤ 3.6 lb/d | all year | 001 |
| Oxygen demand, chem. [low level] [COD] | daily maximum | ≤ 5.4 lb/d | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 001 |
| Oil & Grease | monthly average | ≤ .7 lb/d | all year | 001 |
| Oil & Grease | daily maximum | ≤ 1.1 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 |
| Temperature, water deg. fahrenheit | instantaneous maximum | ≤ 89.6 deg F | all year | 006 |
| Oxygen demand, chem. [low level] [COD] | monthly average | ≤ 50 mg/L | all year | 006 |
| Oxygen demand, chem. [low level] [COD] | daily maximum | ≤ 75 mg/L | all year | 006 |
| Oxygen demand, chem. [low level] [COD] | monthly average | ≤ 35 lb/d | all year | 006 |
| Oxygen demand, chem. [low level] [COD] | daily maximum | ≤ 52.6 lb/d | all year | 006 |
| pH | minimum | ≥ 6 SU | all year | 006 |
| pH | maximum | ≤ 9 SU | all year | 006 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 006 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 006 |
| Oil & Grease | monthly average | ≤ 7 lb/d | all year | 006 |
| Oil & Grease | daily maximum | ≤ 10.5 lb/d | all year | 006 |
| Copper, total recoverable | monthly average | ≤ 29.47 ug/L | all year | 006 |
| Copper, total recoverable | daily maximum | ≤ 59.14 ug/L | all year | 006 |
| Copper, total recoverable | monthly average | ≤ .021 lb/d | all year | 006 |
| Copper, total recoverable | daily maximum | ≤ .041 lb/d | all year | 006 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 006 |
| Chlorine, total residual | instantaneous maximum | < .011 mg/L | all year | 006 |
| Solids, total dissolved | monthly average | ≤ 411 mg/L | all year | 006 |
| Solids, total dissolved | daily maximum | ≤ 617 mg/L | all year | 006 |
| Solids, total dissolved | monthly average | ≤ 288.1 lb/d | all year | 006 |
| Solids, total dissolved | daily maximum | ≤ 432.5 lb/d | all year | 006 |
| WET, sublethal retest #1 | 7-day minimum | report only (pass=0;fail=1) | all year | TX6 |
| WET, sublethal retest #2 | 7-day minimum | report only (pass=0;fail=1) | all year | TX6 |
| Whole Effluent Toxicity, Sub-Lethal Retest #3 | 7-day minimum | report only (pass=0;fail=1) | all year | TX6 |
| Whole Effluent Toxicity [WET] - C. dubia | 7-day minimum | ≥ 100 % | all year | TX6 |
| Whole Effluent Toxicity [WET] - C. dubia | 7-day minimum | ≥ 80 % | all year | TX6 |
| Whole Effluent Toxicity [WET] - P. promelas | 7-day minimum | ≥ 100 % | all year | TX6 |
| Whole Effluent Toxicity [WET] - P. promelas | 7-day minimum | ≥ 80 % | all year | TX6 |
| Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TX6 |
| Pass/Fail Static Renewal 7Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TX6 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (pass=0;fail=1) | all year | TX6 |
| Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (pass=0;fail=1) | all year | TX6 |
| NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX6 |
| NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX6 |
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX6 |
| Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia | 7-day minimum | report only (%) | all year | TX6 |
| Coef Of Var Static Renewal 7Day Chronic Pimephales promelas | 7-day minimum | report only (%) | all year | TX6 |
Cited limits by parameter: Arkansas's rules and the federal ones.
Same industry: the 10 Primary Metal Industries 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/AR0049166 · MCP: https://passage-data.com/mcp