Clean Water Act discharge permit · NPDES MIG250391
RONNINGEN RESEARCH, Vicksburg, MI: NPDES MIG250391 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
RONNINGEN RESEARCH, held by Ronningen Research and Development Company, holds NPDES permit MIG250391, which discharges to Portage River. EPA’s file records it issued March 5, 2019 and expiring April 1, 2023. 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 | RONNINGEN RESEARCH |
|---|---|
| Permittee as filed | Ronningen Research and Development Company |
| NPDES ID | MIG250391 |
| 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 | March 5, 2019 |
| Expiration date | April 1, 2023 |
| Issuing agency | State |
| Address | Vicksburg, MI 49097 |
| Receiving water | Portage River |
| Subwatershed | Indian Lake-Portage River (HUC 040500010505) |
| Other EPA IDs (FRS) | RCRA handler MID053669172 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 4Pollutants on file
- 4Under a numeric limit
- 4With 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 |
|---|---|---|---|---|---|
| pH | 2 | 5 | 1 | March 31, 2022 | |
| Temperature, water deg. fahrenheit | 2 | 4 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 4 | 0 | ||
| Outfall observation,visual, y/n response | 1 | 2 | 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
- 15Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| July 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2025 | Reporting Violations - Late Submittal of DMRs | ST6 |
| December 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 21, 2024 | Reporting Violations - Late Submittal of DMRs | ST6 |
| February 15, 2024 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| August 21, 2022 | Reporting Violations - Late Submittal of DMRs | ST6 |
| July 21, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| June 21, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| September 21, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 21, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 21, 2019 | 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.
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 MIG250391 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.