Passage Data · Check a report · Use it from your AI

U.S. Silver Corp - Idaho Inc

Silver Ores, major discharger, Wallace, Idaho. NPDES permit ID0000027 expired Jul 31, 2024; its limits still apply. Last 12 months: over a limit 2 times (last March 2026), 62 of 108 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due

About 20 days after each period: outfall 001 form F monthly (30 values), outfall 001 form Q1 quarterly (5 values), outfall 001 form T monthly (3 values), outfall 002 form F monthly (10 values), outfall 002 form M monthly (37 values), outfall 002 form N monthly (26 values), and 10 more forms

Last report on file

August 2026

Oct 2024 – Sep 2025

0 values over a limit, 0 required values missing, 0 of 122 reports late

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

Limits in force (183)

How strict are these limits?

• Copper, total recoverable, monthly average 1 ug/L — stricter than 93% of 99 other major industrial and other permits nationwide; 2% have the same limit
• Copper, total recoverable, daily maximum 1 ug/L — stricter than 92% of 141 other major industrial and other permits nationwide; 1% have the same limit
• pH, instantaneous minimum at least 6.5 SU — stricter than 90% of 328 other major industrial and other permits nationwide; 8% have the same limit

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

Same industry: the 10 Metal Mining permits in Idaho.

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/ID0000027 · MCP: https://passage-data.com/mcp