Clean Water Act discharge permit · NPDES MI0060221
WILLOW RUN AIRPORT MS4, Ypsilanti, MI: NPDES MI0060221 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
WILLOW RUN AIRPORT MS4, held by Wayne County Airport Authority, holds NPDES permit MI0060221, which discharges to Willow Run. EPA’s file records it issued January 28, 2022 and expiring October 1, 2024. 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.
Identity
| Facility as filed | WILLOW RUN AIRPORT MS4 |
|---|---|
| Permittee as filed | Wayne County Airport Authority |
| NPDES ID | MI0060221 |
| 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 | January 28, 2022 |
| Expiration date | October 1, 2024 |
| Issuing agency | State |
| Address | Ypsilanti, MI 48198 |
| Receiving water | Willow Run |
| Subwatershed | Belleville Lake-Huron River (HUC 040900050404) |
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 MI0060221.
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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 9, 2023 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| August 9, 2023 | Failure to comply with a requirement regarding Illicit Discharge Detection and Elimination | ST6 |
| August 9, 2023 | Failure to comply with a requirement regarding Pollution Prevention / Good Housekeeping | ST6 |
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.
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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 MI0060221 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.