Clean Water Act discharge permit · NPDES MT0032051

YELLOWSTONE MOUNTAIN CLUB SNOWMAKING, Big Sky, MT: NPDES MT0032051 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
11Pollutants under a numeric limit
0Pollutants with an effluent exceedance

YELLOWSTONE MOUNTAIN CLUB SNOWMAKING, held by YELLOWSTONE CLUB LLC, holds NPDES permit MT0032051, which discharges to Second Yellow Mule Creek. EPA’s file records it issued June 7, 2021 and expiring July 31, 2026. 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 YELLOWSTONE MOUNTAIN CLUB SNOWMAKING: its NPDES ID, its permit type and status, its dates, its address in Big Sky, Montana, its receiving water, and 11 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MT0032051.

Identity

Facility as filed	YELLOWSTONE MOUNTAIN CLUB SNOWMAKING
Permittee as filed	YELLOWSTONE CLUB LLC
NPDES ID	MT0032051
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Publicly owned treatment works
Issued	June 7, 2021
Expiration date	July 31, 2026
Address	Big Sky, MT 59716
Receiving water	SECOND YELLOW MULE CREEK
Subwatershed	South Fork West Fork Gallatin River (HUC 100200080201)
SIC	1623 – Water, Sewer, And Utility Lines

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

11Pollutants on file
11Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Flow rate	2	0	0
BOD, 5-day, 20 deg. C	2	0	0
pH	2	0	0
Solids, total suspended	2	0	0
Nitrogen, total [as N]	2	0	0
Phosphorus, total [as P]	2	0	0
E. coli, MTEC-MF	2	0	0
Chlorine, total residual	2	0	0
Temperature, water deg. fahrenheit	1	0	0
Nitrogen, ammonia total [as N]	1	0	0
Nitrite + Nitrate total [as N]	1	0	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MT0032051.

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MT0032051.

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, MT0032051.

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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 MT0032051 there.

Nearby on the register

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

This public-records page covers the Clean Water Act discharge permit NPDES MT0032051 for YELLOWSTONE MOUNTAIN CLUB SNOWMAKING in Big Sky, MT, held by YELLOWSTONE CLUB LLC and discharging to Second Yellow Mule Creek. The register lists the permit as administratively continued and a Minor Discharger class, with 11 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.