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Clean Water Act discharge permit · NPDES MTR103432

MDT STRUCTURES SE OF MANHATTAN, Manhattan, MT: NPDES MTR103432 discharge permit, effluent exceedances, inspections, penalties

MDT STRUCTURES SE OF MANHATTAN, held by MONTANA DEPT OF TRANSPORTATION, holds NPDES permit MTR103432, which discharges to Perks Canal. EPA’s file records it issued June 30, 2009 and expiring December 31, 2011. 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.

What the register holds for MDT STRUCTURES SE OF MANHATTAN: its NPDES ID, its permit type and status, its dates, its address in Manhattan, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR103432.

Identity

Facility as filedMDT STRUCTURES SE OF MANHATTAN
Permittee as filedMONTANA DEPT OF TRANSPORTATION
NPDES IDMTR103432
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJune 30, 2009
Expiration dateDecember 31, 2011
Issuing agencyMONTANA DEQ
AddressManhattan, MT 59741
Receiving waterPERKS CANAL
SubwatershedGallatin River-Manhattan (HUC 100200081401)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR103432.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTR103432.

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, MTR103432.

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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 MTR103432 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

MDT STRUCTURES SE OF MANHATTAN is one of 600 storm water construction permits on EPA's NPDES register in Gallatin County, and 6.0% of those 600 permits have a violation on file. The permit also sits among 12 NPDES permits in the Gallatin River-Manhattan subwatershed, and it has no pollutants under a numeric limit and no pollutants with an effluent exceedance.