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Clean Water Act discharge permit · NPDES MTR111726

MDT SIEBEN INTERCHANGE, Wolf Creek, MT: NPDES MTR111726 discharge permit, effluent exceedances, inspections, penalties

MDT SIEBEN INTERCHANGE, held by Jeffery Contracting, holds NPDES permit MTR111726, which discharges to Little Prickly Pear Creek. EPA’s file records it issued April 10, 2026 and expiring December 31, 2027. 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 SIEBEN INTERCHANGE: its NPDES ID, its permit type and status, its dates, its address in Wolf Creek, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR111726.

Identity

Facility as filedMDT SIEBEN INTERCHANGE
Permittee as filedJeffery Contracting
NPDES IDMTR111726
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedApril 10, 2026
Expiration dateDecember 31, 2027
AddressWolf Creek, MT 59648
Receiving waterLITTLE PRICKLY PEAR CREEK
Receiving water impaired303(D) Listed
SubwatershedLyong Creek (HUC 100301011903)

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 MTR111726.

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 MTR111726.

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, MTR111726.

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  • 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 MTR111726 there.

Nearby on the register

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

What this page shows

The MDT SIEBEN INTERCHANGE permit is one of 1 NPDES permit in the Lyong Creek subwatershed, including this one, and it sits among 145 storm water construction permits in Lewis and Clark County, this one included. The permit records 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.