Clean Water Act discharge permit · NPDES MIG580333
ORCHARD GROVE MHP-ANN ARBOR, Ann Arbor, MI: NPDES MIG580333 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 22Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
ORCHARD GROVE MHP-ANN ARBOR, held by Orchard Grove Village, LLC, holds NPDES permit MIG580333, which discharges to Rouse Drain. EPA’s file records it issued November 18, 2019 and expiring April 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 | ORCHARD GROVE MHP-ANN ARBOR |
|---|---|
| Permittee as filed | Orchard Grove Village, LLC |
| NPDES ID | MIG580333 |
| 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 | November 18, 2019 |
| Expiration date | April 1, 2024 |
| Issuing agency | State |
| Address | Ann Arbor, MI 48103 |
| Receiving water | Rouse Drain |
| Subwatershed | Wood Outlet Drain-Salina River (HUC 041000020402) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 22Pollutants on file
- 22Under a numeric limit
- 22With a violation of any kind
- 3With 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 | 43 | 17 | December 31, 2024 | 423% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 40 | 10 | May 31, 2023 | 37% over the limit |
| Coliform, fecal general | 2 | 40 | 10 | March 31, 2026 | 1,400% over the limit |
| pH | 2 | 30 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 30 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 16 | 0 | ||
| Phosphorus, total [as P] | 2 | 16 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 15 | 0 | ||
| Solids, total | 3 | 3 | 0 | ||
| Arsenic, dry weight | 3 | 3 | 0 | ||
| Selenium, dry weight | 3 | 3 | 0 | ||
| Copper, dry weight | 3 | 3 | 0 | ||
| Cadmium, dry weight | 3 | 3 | 0 | ||
| Nitrogen, total Kjeldahl | 3 | 3 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 3 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 3 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 3 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 3 | 0 | ||
| Nitrogen, sludge, total, dry weight [as N] | 3 | 3 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 3 | 0 | ||
| Potassium, sludge, total, dry weight [as K] | 3 | 3 | 0 | ||
| Phosphorus, sludge, total, dry weight [as P] | 3 | 3 | 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
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 30, 2024 | Effluent Violations - Narrative Effluent Violation | ST6 |
| April 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| March 5, 2024 | Effluent Violations - Narrative Effluent Violation | ST6 |
| January 21, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 22, 2020 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| February 23, 2017 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| February 21, 2017 | Permit Violations - Discharge Without a Valid Permit | 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 MIG580333 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.