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Blast Furnaces And Steel Mills, Ashland, Kentucky. NPDES permit KY0033979 expired Aug 31, 2026; its limits still apply. Last 12 months: no values over a limit, 15 required values missing, 12 of 44 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 60 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 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 002 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 002 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 002 |
| Iron, total recoverable | daily maximum | ≤ 4 mg/L | all year | 002 |
| Chromium, hexavalent [as Cr] | monthly average | report only (mg/L) | all year | 002 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .016 mg/L | all year | 002 |
| Zinc, total recoverable | monthly average | report only (mg/L) | all year | 002 |
| Zinc, total recoverable | daily maximum | ≤ .12 mg/L | all year | 002 |
| Cadmium, total recoverable | monthly average | report only (mg/L) | all year | 002 |
| Cadmium, total recoverable | daily maximum | ≤ .002 mg/L | all year | 002 |
| Lead, total recoverable | monthly average | report only (mg/L) | all year | 002 |
| Lead, total recoverable | daily maximum | ≤ .08 mg/L | all year | 002 |
| Copper, total recoverable | monthly average | report only (mg/L) | all year | 002 |
| Copper, total recoverable | daily maximum | ≤ .014 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 |
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year | 003 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 89 deg F | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | maximum weekly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | monthly average | ≤ 268 lb/d | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 714 lb/d | all year | 003 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 003 |
| Oil & Grease | maximum weekly average | report only (mg/L) | all year | 003 |
| Oil & Grease | daily maximum | ≤ 197 lb/d | all year | 003 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 003 |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| pH | minimum | ≥ 6 SU | all year | 006 |
| pH | maximum | ≤ 9 SU | all year | 006 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 006 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 006 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 006 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 006 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 006 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 006 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 006 |
| Iron, total recoverable | daily maximum | ≤ 4 mg/L | all year | 006 |
| Chromium, hexavalent [as Cr] | monthly average | report only (mg/L) | all year | 006 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .016 mg/L | all year | 006 |
| Zinc, total recoverable | monthly average | report only (mg/L) | all year | 006 |
| Zinc, total recoverable | daily maximum | ≤ .12 mg/L | all year | 006 |
| Cadmium, total recoverable | monthly average | report only (mg/L) | all year | 006 |
| Cadmium, total recoverable | daily maximum | ≤ .002 mg/L | all year | 006 |
| Lead, total recoverable | monthly average | report only (mg/L) | all year | 006 |
| Lead, total recoverable | daily maximum | ≤ .08 mg/L | all year | 006 |
| Copper, total recoverable | monthly average | report only (mg/L) | all year | 006 |
| Copper, total recoverable | daily maximum | ≤ .014 mg/L | 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 |
| pH | minimum | ≥ 6 SU | all year | 008 |
| pH | maximum | ≤ 9 SU | all year | 008 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 008 |
| Solids, total suspended | daily maximum | ≤ 60 mg/L | all year | 008 |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year | 008 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 008 |
| Hardness, total [as CaCO3] | monthly average | report only (mg/L) | all year | 008 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 008 |
| Iron, total recoverable | monthly average | report only (mg/L) | all year | 008 |
| Iron, total recoverable | daily maximum | ≤ 4 mg/L | all year | 008 |
| Chromium, hexavalent [as Cr] | monthly average | report only (mg/L) | all year | 008 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .016 mg/L | all year | 008 |
| Zinc, total recoverable | monthly average | report only (mg/L) | all year | 008 |
| Zinc, total recoverable | daily maximum | ≤ .12 mg/L | all year | 008 |
| Copper, total recoverable | monthly average | report only (mg/L) | all year | 008 |
| Copper, total recoverable | daily maximum | ≤ .014 mg/L | all year | 008 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 008 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 008 |
Cited limits by parameter: Kentucky's rules and the federal ones.
Same industry: the 22 Primary Metal Industries permits in Kentucky.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/KY0033979 · MCP: https://passage-data.com/mcp