Clean Water Act discharge permit · NPDES MIS420087
GRAND TRUNK WESTERN-FLAT ROCK, Flat Rock, MI: NPDES MIS420087 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
GRAND TRUNK WESTERN-FLAT ROCK, held by Grand Trunk Western Railroad, holds NPDES permit MIS420087, which discharges to Smith Creek. EPA’s file records it issued May 15, 2025 and expiring April 1, 2029. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
What the register holds for GRAND TRUNK WESTERN-FLAT ROCK: its NPDES ID, its permit type and status, its dates, its address in Flat Rock, Michigan, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MIS420087.
Identity
| Facility as filed | GRAND TRUNK WESTERN-FLAT ROCK |
|---|---|
| Permittee as filed | Grand Trunk Western Railroad |
| NPDES ID | MIS420087 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 15, 2025 |
| Expiration date | April 1, 2029 |
| Issuing agency | State |
| Address | Flat Rock, MI 48134 |
| Receiving water | Smith Creek |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Silver Creek (HUC 040900050406) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES MIS420087.
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MIS420087.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MIS420087 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.