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Clean Water Act discharge permit · NPDES MTR109038

OVERLOOK LOT 7 MOONLIGHT BASIN, Big Sky, MT: NPDES MTR109038 discharge permit, effluent exceedances, inspections, penalties

OVERLOOK LOT 7 MOONLIGHT BASIN, held by Big Sky Build, Inc., holds NPDES permit MTR109038, which discharges to Jack Creek. EPA’s file records it issued July 2, 2021 and expiring December 31, 2022. 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 OVERLOOK LOT 7 MOONLIGHT BASIN: its NPDES ID, its permit type and status, its dates, its address in Big Sky, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR109038.

Identity

Facility as filedOVERLOOK LOT 7 MOONLIGHT BASIN
Permittee as filedBig Sky Build, Inc.
NPDES IDMTR109038
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJuly 2, 2021
Expiration dateDecember 31, 2022
AddressBig Sky, MT 59716
Receiving waterJACK CREEK
SubwatershedUpper Jack Creek (HUC 100200071001)
SIC1522 – Residential 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 MTR109038.

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 MTR109038.

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, MTR109038.

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How often?
  • 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 MTR109038 there.

Nearby on the register

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

What this page shows

In Gallatin County, 6.0% of the 600 storm water construction permits have a violation on file. OVERLOOK LOT 7 MOONLIGHT BASIN is among those 600 Gallatin County permits, and the Upper Jack Creek subwatershed holds 33 NPDES permits counting this permit. Of the 579 storm water construction permits in Gallatin County counting this permit, 47.8% carry an issue date earlier than this permit.