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Mining and Quarrying of Nonmetallic Minerals — NPDES discharge permits in California

Of the 3 permits in EPA's SIC 14 in CA, 2 went over a limit between 2025-10-01 and 2026-09-30 (Chromium, hexavalent [as Cr]: 1; Di[2-ethylhexyl] phthalate [DEHP]: 1; Molybdenum, total [as Mo]: 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
Granite Rock Company
CA0005274 · Crushed And Broken Granite
Over a limit 6×: Solids, total dissolved (2×), Molybdenum, total [as Mo] (2×), Di[2-ethylhexyl] phthalate [DEHP] (1×)Permit past the expiry date EPA's file holds
Stevens Creek Quarry, Inc.
CA0030236 · Crushed And Broken Stone
Over a limit 2×: Chromium, hexavalent [as Cr] (1×), Solids, settleable (1×)Permit past the expiry date EPA's file holds
The CHY Company and Olive Springs Quarry, Inc.
CA0047791 · Construction Sand And Gravel
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=CA&sic=14, 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