Clean Water Act discharge permit · NPDES MI0002640
AAR FACILITY, Cadillac, MI: NPDES MI0002640 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
- 2Inspections on file
- 0Formal enforcement actions
AAR FACILITY, held by AAR Mobility Systems, holds NPDES permit MI0002640, which discharges to Clam River. EPA’s file records it issued June 25, 2013 and expiring October 1, 2017. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | AAR FACILITY |
|---|---|
| Permittee as filed | AAR Mobility Systems |
| NPDES ID | MI0002640 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | June 25, 2013 |
| Expiration date | October 1, 2017 |
| Issuing agency | State |
| Address | Cadillac, MI 49601 |
| Receiving water | Clam River |
| Subwatershed | Pleasant Lake-Clam River (HUC 040601020303) |
| NAICS | 332311 – Prefabricated Metal Building and Component Manufacturing |
| SIC | 3499 – Fabricated Metal Products |
| Other EPA IDs (FRS) | RCRA handler MID006019251; ICIS-AIR source MI00000000000B4197 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 15Pollutants on file
- 14Under a numeric limit
- 15With a violation of any kind
- 7With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Chlorine, total residual | 1 | 51 | 30 | February 28, 2021 | 1,268% over the limit |
| Temperature, water deg. fahrenheit | 1 | 36 | 19 | August 31, 2020 | 31% over the limit |
| Oil & Grease | 1 | 29 | 12 | October 31, 2025 | 99,999% over the limit |
| 1,1,1-Trichloroethane | 1 | 86 | 5 | November 30, 2020 | 213% over the limit |
| pH | 2 | 41 | 3 | November 30, 2021 | |
| Trichloroethylene | 1 | 82 | 2 | June 30, 2007 | 400% over the limit |
| Thermal Discharge | 0 | 1 | 1 | April 30, 2025 | 10% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 150 | 0 | ||
| 1,1-Dichloroethane | 1 | 63 | 0 | ||
| 1,1-Dichloroethylene | 1 | 63 | 0 | ||
| Equipment inspection - visual | 1 | 54 | 0 | ||
| Tetrachloroethylene | 1 | 52 | 0 | ||
| Dichloroethene, total | 1 | 52 | 0 | ||
| Outfall observation,visual, y/n response | 1 | 22 | 0 | ||
| Phosphorus, total [as P] | 2 | 6 | 0 |
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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 11, 2018 | Management Practice Violations - Best Management Practice Deficiencies | ST6 |
| March 1, 2017 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
Inspections
| Date | What EPA recorded | Agency |
|---|---|---|
| June 23, 2026 | Sampling | S |
| April 15, 2026 | Evaluation | S |
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
| Date | What EPA recorded | Agency |
|---|---|---|
| September 10, 2026 | Letter of Violation/ Warning Letter | State |
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 MI0002640 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.