Clean Water Act discharge permit · NPDES MIS110921
GM ORION ASSEMBLY, Lake Orion, MI: NPDES MIS110921 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
GM ORION ASSEMBLY, held by General Motors, LLC, holds NPDES permit MIS110921, which discharges to Carpenter Lake. EPA’s file records it issued March 12, 2021 and expiring March 31, 2026.
GM ORION ASSEMBLY, Lake Orion, Michigan: Coverage under a general permit MIS110921, held by General Motors, LLC; Effective; issued March 12, 2021, term to March 31, 2026, by State; discharges to Carpenter Lake; Automobile and Light Duty Motor Vehicle Manufacturing.
Other permits held by General Motors, LLC
- GM-CCA 05-PROCESS ENGINEERING, Flint: MIG640298, issued February 27, 2024
- GM-TECHNICAL CENTER-WARREN, Warren: MIS111121, issued May 14, 2021
- GM-SMCO LANDFILL, Saginaw: MIS111642, issued May 14, 2021
- GM FLINT COMPLEX, Flint: MIS510883, issued May 19, 2020
GM ORION ASSEMBLY among its neighbors
EPA’s permit file holds 5 discharge permits in the Sashabaw Creek subwatershed (HUC 040900030102), MIS110921 among them. Its county holds 124, 6 of them major permits; MIS110921 is a minor permit.
Other permits in the Sashabaw Creek subwatershed (HUC 040900030102)
- FEV INC-GLENMEADE, Auburn Hills: MIS111915, minor permit, discharging to Galloway Ditch, permit term to April 1, 2021
- IROQUOIS INDUSTRIES INC-AUBURN HILLS, Auburn Hills: MIS111956, minor permit, discharging to Galloway Creek, permit term to April 1, 2021
- MAGNA SEATING-AUBURN HILLS, Auburn Hills: MIS112152, minor permit, discharging to Galloway Creek, permit term to April 1, 2026
- WEBER AUTOMOTIVE CORP, Auburn Hills: MIS111816, minor permit, discharging to Galloway Creek, permit term to April 1, 2021
What the register holds for GM ORION ASSEMBLY: its NPDES ID, its permit type and status, its dates, its address in Lake Orion, Michigan, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MIS110921.
Identity
| Facility as filed | GM ORION ASSEMBLY |
|---|---|
| Permittee as filed | General Motors, LLC |
| NPDES ID | MIS110921 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | March 12, 2021 |
| Expiration date | March 31, 2026 |
| Issuing agency | State |
| Address | Lake Orion, MI 48359 |
| Receiving water | Carpenter Lake |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Sashabaw Creek (HUC 040900030102) |
| NAICS | 336110 – Automobile and Light Duty Motor Vehicle Manufacturing |
| SIC | 3711 – Motor Vehicles And Car Bodies |
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 MIS110921.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MIS110921.
Inspections
EPA’s inspection file holds no inspection for NPDES MIS110921.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES MIS110921.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MIS110921.
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Nearby on the register
- Discharge permits in Lake Orion
- Every permit record in Lake Orion, A to Z
- Discharge permits in Michigan
- Every permit record in Michigan, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.