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Century Aluminum of Kentucky LLC - Sebree

Primary Aluminum, major discharger, Robards, Kentucky. NPDES permit KY0004278, in force until Jun 30, 2027. Last 12 months: over a limit 2 times (last May 2026), 4 of 59 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due

About 28 days after each period: outfall 002 form 1 monthly (10 values), outfall 003 form 1 monthly (10 values), outfall 003 form 2 quarterly (4 values), outfall 004 form 1 monthly (12 values), outfall 004 form 2 quarterly (2 values), outfall 006 form 2 quarterly (8 values), and 3 more forms

Renewal application due

Jan 1, 2027 · 180 days before expiry; your permit may set another date

Last report on file

August 2026

Oct 2024 – Sep 2025

0 values over a limit, 0 required values missing, 17 of 68 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Limits in force (64)

How strict are these limits?

• Temperature, water deg. fahrenheit, daily maximum 89 deg F — stricter than 92% of 26 other major industrial and other permits in Kentucky; 8% have the same limit
• Chlorine, total residual, daily maximum .019 mg/L — stricter than 86% of 420 other major industrial and other permits nationwide; 8% have the same limit
• Chlorine, total residual, monthly average .011 mg/L — stricter than 84% of 221 other major industrial and other permits nationwide; 10% have the same limit

Cited limits by parameter: Kentucky's rules and the federal ones.

Same industry: the 22 Primary Metal Industries permits in Kentucky.

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/KY0004278 · MCP: https://passage-data.com/mcp