Clean Water Act discharge permit · NPDES MNG250090
MARINE IRON & SHIP BUILDING CO, Duluth, MN: NPDES MNG250090 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
MARINE IRON & SHIP BUILDING CO holds NPDES permit MNG250090, which discharges to Duluth Harbor Bay. EPA’s file records it issued February 1, 2008 and expiring December 31, 2012. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
What the register holds for MARINE IRON & SHIP BUILDING CO: its NPDES ID, its permit type and status, its dates, its address in Duluth, Minnesota, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MNG250090.
Identity
| Facility as filed | MARINE IRON & SHIP BUILDING CO |
|---|---|
| Permittee as filed | MARINE IRON & SHIP BUILDING CO |
| NPDES ID | MNG250090 |
| 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 | February 1, 2008 |
| Expiration date | December 31, 2012 |
| Address | Duluth, MN 55802 |
| Receiving water | DULUTH HARBOR BAY |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Saint Louis River (HUC 040102011604) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 0Pollutants on file
- 0Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
EPA’s limits and effluent violation files hold no pollutant row for NPDES MNG250090.
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 MNG250090.
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 MNG250090 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.