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Stone, Clay, Glass and Concrete Products — NPDES discharge permits in North Carolina

Of the 9 permits in EPA's SIC 32 in NC, 1 went over a limit between 2025-10-01 and 2026-09-30 (Nitrogen, ammonia total [as N]: 1). 5 are past the expiry date EPA's file holds; 3 have a renewal application overdue or due within 18 months. EPA's file of 2026-10-15.

FacilityLast 12 monthsPermit
Certainteed Gypsum NC Inc
NC0088731 · Gypsum Products
Over a limit 1×: Nitrogen, ammonia total [as N] (1×)Renewal application due Feb 1, 2027
B V Hedrick Gravel & Sand Company
NC0028169 · Minerals, Ground Or Treated
No value over a limitPermit past the expiry date EPA's file holds
Carolina Stalite Company Limited Partnership
NC0080586 · Minerals, Ground Or Treated
No value over a limitPermit past the expiry date EPA's file holds
Corning Incorporated
NC0003794 · Products Of Purchased Glass
No value over a limit; 14 required values not reportedRenewal application overdue
Corning Incorporated
NC0086169 · Pressed And Blown Glass
No value over a limitExpires Jun 30, 2031
Electric Glass Fiber America LLC
NC0004626 · Pressed And Blown Glass
No value over a limitRenewal application overdue
Electric Glass Fiber America LLC
NC0004685 · major · Pressed And Blown Glass
No value over a limit; 40 required values not reportedPermit past the expiry date EPA's file holds
Pilkington North America Inc
NC0049514 · Flat Glass
No value over a limit; 9 required values not reportedPermit past the expiry date EPA's file holds
Sibelco North America
NC0085839 · Minerals, Ground Or Treated
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=NC&sic=32, 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