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American Gilsonite Company

Miscellaneous Nonmetallic Minerals, Bonanza, Utah. NPDES permit UT0000167 expired Sep 30, 2026; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due

About 28 days after each period: outfall 010 form A quarterly (9 values), outfall 013 form A quarterly (9 values), outfall 016 form A quarterly (9 values), outfall 017 form A quarterly (9 values), outfall 024 form A quarterly (11 values), outfall 029 form A quarterly (9 values), and 11 more forms

Last report on file

June 2026

Oct 2024 – Sep 2025

0 values over a limit, 0 required values missing, 0 of 160 reports late

Limits in force (127)

How strict are these limits?

• Solids, total suspended, 7-day average 35 mg/L — stricter than 85% of 361 other minor industrial and other permits nationwide; 1% have the same limit
• Solids, total suspended, 30-day average 25 mg/L — stricter than 79% of 1,338 other minor industrial and other permits nationwide; 2% have the same limit
• pH, minimum at least 6.5 SU — stricter than 70% of 7,060 other minor industrial and other permits nationwide; 28% have the same limit

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

Same industry: the 4 Mining and Quarrying of Nonmetallic Minerals permits in Utah.

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/UT0000167 · MCP: https://passage-data.com/mcp