Clean Water Act discharge permit · NPDES MTR111363

MISSOULA MONTANA AIRPORT, Missoula, MT: NPDES MTR111363 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

MISSOULA MONTANA AIRPORT, held by SCHELLINGER CONSTRUCTION CO, holds NPDES permit MTR111363, which discharges to Butler Creek. EPA’s file records it issued July 31, 2025 and expiring December 31, 2027.

MISSOULA MONTANA AIRPORT, Missoula, Montana: Coverage under a general permit MTR111363, held by SCHELLINGER CONSTRUCTION CO; Construction stormwater; Effective; issued July 31, 2025, term to December 31, 2027; discharges to BUTLER CREEK.

Montana holds 2,848 Construction stormwater coverages of this permit type in EPA’s file; 2,249 were issued before MTR111363. SCHELLINGER CONSTRUCTION CO holds 6 permits in Montana.

Other permits held by SCHELLINGER CONSTRUCTION CO

VALLEY SPRINGS RANCH PIT, Stevensville: MTR108959, issued March 7, 2022
DERN SPRING - WASTE AREA, Kalispell: MTR108966, issued May 28, 2021
LIVINGSTON AIRPORT, Livingston: MTR109692, issued July 20, 2022
RESERVE DRIVE W. OF WHITEFISH STAGE - DESIGN BUILD, Kalispell: MTR110880, issued July 15, 2024
WHITETAIL RIDGE, Whitefish: MTR111361, issued May 30, 2025

Coverages issued nearest MTR111363

July 22, 2025: MILL CREEK RESIDENCE, Livingston, MTR111443, held by NORTH FORK BUILDERS INC
July 23, 2025: MEADOW BRIDGE SUBDIVISION, Bozeman, MTR111448, held by CK May Excavating, Inc.
July 28, 2025: CBR - COS 1050 TRACT 4, Philipsburg, MTR111437, held by Yellowstone Traditions
July 28, 2025: WELLS 4 & 5 CONNECTING INFRASTRUCTURE, Buffalo, MTR111459, held by COP CONSTRUCTION LLC
July 29, 2025: FLATHEAD R - 3 M NW BIGFORK, Bigfork, MTR111462, held by SLETTEN CONSTRUCTION COMPANY
July 31, 2025: SPRING CREEK RV, Big Timber, MTR111431, held by Broadwater MT LLC
August 1, 2025: US ANTIMONY CORPORATION - THOMPSON FALLS, Thompson Falls, MTR111465, held by US Antimony Corporation
August 4, 2025: KENDRICK CONDOS - CANYON CREEK VILLAGE PHASE 14, Missoula, MTR111410, held by Remington Group LLC
August 5, 2025: LOT 15 OF SPANISH PEAKS RESORT, Big Sky, MTR111409, held by SBC INC (SCHLAUCH BOTTCHER CONSTRUCTION INC)
August 5, 2025: BIG SKY COMMUNITY PARK, Big Sky, MTR111467, held by Big Sky Community Organization

MISSOULA MONTANA AIRPORT among its neighbors

EPA’s permit file holds 16 discharge permits in the Butler Creek subwatershed (HUC 170102040201), MTR111363 among them. Its county holds 284, 3 of them major permits; MTR111363 is a minor permit.

Other permits in the Butler Creek subwatershed (HUC 170102040201)

BFS GROUP LLC – MISSOULA MT TRUSS/MW/PANEL, Missoula: MTR000463, minor permit, discharging to BUTLER CREEK, permit term to January 31, 2023
BIG D CONSTRUCTION - MEADOW GOLD BUILDING, Missoula: MTR1W0011, not classed, discharging to CLARK FORK RIVER
BUTLER CREEK DEVELOPMENT, Missoula: MTR111603, minor permit, discharging to BUTLER CREEK, permit term to December 31, 2027
DOYLES SHEEHAN, Missoula: MTR111548, minor permit, discharging to BUTLER CREEK, permit term to December 31, 2027
ELITE ONE SOURCE, Missoula: MTR107072, minor permit, discharging to Middle Clark Fork, permit term to December 31, 2017
EXPRESSWAY INDUSTRIAL CONDOS, Missoula: MTR111809, minor permit, discharging to BUTLER CREEK, permit term to December 31, 2027
MINUTEMAN MAINTENANCE HANGAR, Missoula: MTR111782, minor permit, discharging to BUTLER CREEK, permit term to December 31, 2027
MISSOULA DEVELOPMENT PARK FOR CITY OF MISSOULA, Missoula: MTR112007, minor permit, discharging to BUTLER CREEK, permit term to December 31, 2027
MISSOULA INTERNAT'L AIRPORT-TERMINAL ROAD IMPROVEMENTS, Missoula: MTR107521, minor permit, discharging to BUTLER CREEK, permit term to December 31, 2022
MONTANA FOOD BANK NETWORK, Missoula: MTR110688, not classed, discharging to BUTLER CREEK

What the register holds for MISSOULA MONTANA AIRPORT: its NPDES ID, its permit type and status, its dates, its address in Missoula, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR111363.

Identity

Facility as filed	MISSOULA MONTANA AIRPORT
Permittee as filed	SCHELLINGER CONSTRUCTION CO
NPDES ID	MTR111363
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Construction stormwater
Issued	July 31, 2025
Expiration date	December 31, 2027
Address	Missoula, MT 59808
Receiving water	BUTLER CREEK
Subwatershed	Butler Creek (HUC 170102040201)

Effluent limits and exceedances

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

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR111363.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTR111363.

Inspections

EPA’s inspection file holds no inspection for NPDES MTR111363.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES MTR111363.

Watch this permit

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Nearby on the register

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

MISSOULA MONTANA AIRPORT is among 206 storm water construction permits in Missoula County, and 13.1% of those have a violation on file. The Butler Creek subwatershed counts 16 NPDES permits including this permit, and 76.8% of the 194 Missoula County storm water permits counting this permit were issued before it.