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Metal Mining — NPDES discharge permits in Washington

Of the 3 permits in EPA's SIC 10 in WA, 1 went over a limit between 2025-10-01 and 2026-09-30 (Oxygen, dissolved [DO]: 1). 3 are past the expiry date EPA's file holds; 0 have a renewal application overdue or due within 18 months. EPA's file of 2026-10-15.

FacilityLast 12 monthsPermit
Kinross-Crown Resources-Buckhorn Operations
WA0052434 · Gold Ores
Over a limit 4×: Oxygen, dissolved [DO] (4×)Permit past the expiry date EPA's file holds
DAWN MINING COMPANY
WA0025721 · major · Uranium-Radium-Vanadium Ores
No value over a limitPermit past the expiry date EPA's file holds
DAWN MINING COMPANY LLC
WA0026841 · Uranium-Radium-Vanadium Ores
No value over a limitPermit past the expiry date EPA's file holds

The record is EPA's ICIS-NPDES file of 2026-10-15: values filed against each limit between Oct 1, 2025 and Sep 30, 2026. No reports on file may be EPA's gap, not the facility's.

For programs and AI agents: this screen as JSON at /api/v1/permits?state=WA&sic=10, narrowed with &over_limit=true, &parameter=phosphorus or &renewal=due; or add https://passage-data.com/mcp as a remote MCP server (tool list_permits). Free, no key. llms.txt

From EPA's ECHO data, not the permit document itself: your permit is the final word. All states