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Clean Water Act discharge permit · NPDES MTR111687

NELNIK SUBDIVISION, Stevensville, MT: NPDES MTR111687 discharge permit, effluent exceedances, inspections, penalties

NELNIK SUBDIVISION, held by Nelnik LLC, holds NPDES permit MTR111687, which discharges to Ambrose Creek. EPA’s file records it issued March 12, 2026 and expiring December 31, 2027. 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 NELNIK SUBDIVISION: its NPDES ID, its permit type and status, its dates, its address in Stevensville, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR111687.

Identity

Facility as filedNELNIK SUBDIVISION
Permittee as filedNelnik LLC
NPDES IDMTR111687
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedMarch 12, 2026
Expiration dateDecember 31, 2027
AddressStevensville, MT 59870
Receiving waterAMBROSE CREEK
SubwatershedAmbrose Creek (HUC 170102051502)
SIC1611 – Highway And Street Construction

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR111687.

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 MTR111687.

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, MTR111687.

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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 MTR111687 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

NELNIK SUBDIVISION is one of 2 NPDES permits in the Ambrose Creek subwatershed, the other being a permit for the same watershed listed alongside it. Among the 49 storm water construction permits in Ravalli County, 10.2% have a violation on file, and this permit has none of its pollutants under a numeric limit or with an effluent exceedance. Of the 42 storm water construction permits in Ravalli County, 90.5% were issued before this one in March 2026.