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Of the 7 permits in EPA's SIC 32 in MI, 3 went over a limit between 2025-10-01 and 2026-09-30 (pH: 2; Chlorine, total residual: 1; Solids, total suspended: 1). 2 are past the expiry date EPA's file holds; 4 have a renewal application overdue or due within 18 months. EPA's file of 2026-10-15.
All Michigan permitsAll states
| Facility | Last 12 months | Permit |
|---|---|---|
| St Marys Cement U.S. LLC MI0004243 · Cement, Hydraulic | Over a limit 5×: pH (5×) | Renewal application due Apr 4, 2028 |
| Amrize Cement Inc. MI0001988 · major · Cement, Hydraulic | Over a limit 4×: pH (3×), Solids, total suspended (1×) | Expires Oct 1, 2029 |
| Hemlock Semiconductor Operations LLC MI0027375 · Minerals, Ground Or Treated | Over a limit 1×: Chlorine, total residual (1×) | Renewal application due Apr 4, 2028 |
| Carmeuse Lime, Incorporated MI0057126 · Lime | No value over a limit | Permit past the expiry date EPA's file holds |
| Guardian Industries LLC MI0037001 · Flat Glass | No value over a limit | Renewal application due Apr 4, 2027 |
| Martin Marietta Magnesia Specialties, LLC MI0004154 · major · Minerals, Ground Or Treated | No value over a limit | Permit past the expiry date EPA's file holds |
| Saint-Gobain North America, CertainTeed Ceilings Corporation MI0057004 · Mineral Wool | No value over a limit | Renewal application due Apr 4, 2027 |
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=MI&sic=32, narrowed with &over_limit=true, ¶meter=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