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Crucible MTN, LLC

Lead And Zinc Ores, major discharger, Gordonsville, Tennessee. NPDES permit TN0029360, in force until Oct 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due

About 15 days after each period: outfall 001 form G quarterly (32 values), outfall 004 form G quarterly (32 values), outfall 005 form G quarterly (32 values), outfall 007 form G quarterly (32 values), outfall 008 form G quarterly (32 values), outfall SW2 form B yearly

Renewal application due

May 4, 2027 · 180 days before expiry; your permit may set another date

Last report on file

September 2026

Oct 2024 – Sep 2025

0 values over a limit, 0 required values missing, 11 of 45 reports late

Limits in force (164)

How strict are these limits?

• Solids, total suspended, daily maximum 30 mg/L — stricter than 80% of 1,064 other major industrial and other permits nationwide; 12% have the same limit
• Cadmium, total [as Cd], monthly average .019 mg/L — stricter than 78% of 23 other major industrial and other permits nationwide
• Solids, total suspended, monthly average 20 mg/L — stricter than 77% of 821 other major industrial and other permits nationwide; 11% have the same limit

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

Same industry: the 10 Metal Mining permits in Tennessee.

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TN0029360 · MCP: https://passage-data.com/mcp