Clean Water Act discharge permit · NPDES MIG490286
RIETH RILEY-AFTON PLANT, Afton, MI: NPDES MIG490286 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
RIETH RILEY-AFTON PLANT, held by Rieth-Riley Construction Company Incorporated, holds NPDES permit MIG490286, which discharges to Kimberly Creek. EPA’s file records it issued September 27, 2019 and expiring April 1, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | RIETH RILEY-AFTON PLANT |
|---|---|
| Permittee as filed | Rieth-Riley Construction Company Incorporated |
| NPDES ID | MIG490286 |
| 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 | September 27, 2019 |
| Expiration date | April 1, 2020 |
| Issuing agency | State |
| Address | Afton, MI 49705 |
| Receiving water | Kimberly Creek |
| Subwatershed | Little Pigeon River (HUC 040700040306) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 5Pollutants on file
- 5Under a numeric limit
- 5With 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 | 123 | 7 | July 31, 2024 | 135% over the limit |
| pH | 2 | 46 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 40 | 0 | ||
| Outfall observation,visual, y/n response | 1 | 21 | 0 | ||
| Solids, total dissolved | 1 | 5 | 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
- 11Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 12, 2023 | Management Practice Violations - Failure to Maintain Records | ST6 |
| October 12, 2023 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| June 11, 2021 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| June 11, 2021 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| April 21, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| November 21, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
| June 12, 2019 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| June 10, 2019 | Management Practice Violations - No Licensed/Certified Operator | ST6 |
| June 10, 2019 | Management Practice Violations - Failure to Maintain Records | ST6 |
| June 10, 2019 | Monitoring Violations - Invalid/Unrepresentative Sample | 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.
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, MIG490286.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 MIG490286 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.