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Clean Water Act discharge permit · NPDES MTR106659

SLAUGHTERVILLE-1H, Decker, MT: NPDES MTR106659 discharge permit, effluent exceedances, inspections, penalties

SLAUGHTERVILLE-1H, held by ALTA VISTA OIL CORP, holds NPDES permit MTR106659, which discharges to Upper Tongue. EPA’s file records it issued October 5, 2016 and expiring December 31, 2017. 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 SLAUGHTERVILLE-1H: its NPDES ID, its permit type and status, its dates, its address in Decker, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR106659.

Identity

Facility as filedSLAUGHTERVILLE-1H
Permittee as filedALTA VISTA OIL CORP
NPDES IDMTR106659
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
IssuedOctober 5, 2016
Expiration dateDecember 31, 2017
Issuing agencyMT DEQ
AddressDecker, MT 59025
Receiving waterUPPER TONGUE
SubwatershedDeer Creek (HUC 100901010502)

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 MTR106659.

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 MTR106659.

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, MTR106659.

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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 MTR106659 there.

Nearby on the register

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

What this page shows

The SLAUGHTERVILLE-1H permit, filed by ALTA VISTA OIL CORP, is one of 3 NPDES permits in the Deer Creek subwatershed, and it is one of 29 storm water construction permits on the EPA's NPDES register in Big Horn County. Of the 24 storm water construction permits in that county, 37.5% were issued earlier than this one, and none of the 29 county storm water construction permits carry a violation on file, a share of 0.0%.