Clean Water Act discharge permit · NPDES MIG490349
AMC-WSG, LLC - VELLA PIT, Ann Arbor, MI: NPDES MIG490349 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
AMC-WSG, LLC - VELLA PIT, held by AMC-WSG LLC, holds NPDES permit MIG490349. EPA’s file records it issued April 5, 2022 and expiring April 1, 2025. 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 | AMC-WSG, LLC - VELLA PIT |
|---|---|
| Permittee as filed | AMC-WSG LLC |
| NPDES ID | MIG490349 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | April 5, 2022 |
| Expiration date | April 1, 2025 |
| Issuing agency | State |
| Address | Ann Arbor, MI 48105 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Fleming Creek (HUC 040900050401) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 5Pollutants on file
- 5Under a numeric limit
- 1With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 3 | 3 | November 30, 2022 | 167% over the limit |
| pH | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Solids, total dissolved | 1 | 0 | 0 | ||
| Outfall observation,visual, y/n response | 1 | 0 | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 21, 2026 | Reporting Violations - Late Submittal of DMRs | ST6 |
| December 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| July 27, 2023 | Management Practice Violations - Failure to Maintain Records | ST6 |
| July 27, 2023 | Effluent Violations - Narrative Effluent Violation | ST6 |
| July 27, 2023 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| May 21, 2022 | Reporting Violations - Late Submittal of DMRs | 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 MIG490349 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.