Clean Water Act discharge permit · NPDES MIG081164
MARATHON PIPELINE GWCU, Dansville, MI: NPDES MIG081164 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 4Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MARATHON PIPELINE GWCU, held by Marathon Pipe Line LLC, holds NPDES permit MIG081164, which discharges to Bauer Drain. EPA’s file records it issued May 19, 2015 and expiring April 1, 2020. 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 | MARATHON PIPELINE GWCU |
|---|---|
| Permittee as filed | Marathon Pipe Line LLC |
| NPDES ID | MIG081164 |
| 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 | May 19, 2015 |
| Expiration date | April 1, 2020 |
| Issuing agency | State |
| Address | Dansville, MI 48819 |
| Receiving water | Bauer Drain |
| Subwatershed | Hayhoe Drain-Doan Creek (HUC 040500040408) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 4Under a numeric limit
- 8With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Benzene, ethylbenzene, toluene, xylene combination | 5 | 239 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 97 | 0 | ||
| pH | 2 | 96 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 48 | 0 | ||
| Lead, total [as Pb] | 0 | 48 | 0 | ||
| Equipment inspection - visual | 0 | 48 | 0 | ||
| Outfall observation,visual, y/n response | 0 | 48 | 0 | ||
| Ethylbenzene | 0 | 21 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MIG081164.
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MIG081164.
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 MIG081164 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.