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Clean Water Act discharge permit · NPDES MTR10I03A

SF 179 D1 SAFETY SIGNS GUARDRAIL HSIP STWD(647) CN9635000, Hot Springs, MT: NPDES MTR10I03A discharge permit, effluent exceedances, inspections, penalties

SF 179 D1 SAFETY SIGNS GUARDRAIL HSIP STWD(647) CN9635000, held by Montana Dept. of Transportation, holds NPDES permit MTR10I03A. EPA’s file records it issued April 26, 2021 and expiring February 15, 2022.

SF 179 D1 SAFETY SIGNS GUARDRAIL HSIP STWD(647) CN9635000, Hot Springs, Montana: Coverage under a general permit MTR10I03A, held by Montana Dept. of Transportation; Construction stormwater; Administratively continued (past its expiration date and still in force until reissued); issued April 26, 2021, term to February 15, 2022, by U.S. EPA.

Montana holds 2,848 Construction stormwater coverages of this permit type in EPA’s file; 1,413 were issued before MTR10I03A. Montana Dept. of Transportation holds 12 permits in Montana.

Other permits held by Montana Dept. of Transportation

Coverages issued nearest MTR10I03A

SF 179 D1 SAFETY SIGNS GUARDRAIL HSIP STWD(647) CN9635000 among its neighbors

EPA’s permit file holds 2 discharge permits in the Cottonwood Creek subwatershed (HUC 170102120804), MTR10I03A among them.

Other permits in the Cottonwood Creek subwatershed (HUC 170102120804)

What the register holds for SF 179 D1 SAFETY SIGNS GUARDRAIL HSIP STWD(647) CN9635000: its NPDES ID, its permit type and status, its dates, its address in Hot Springs, Montana. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR10I03A.

Identity

Facility as filedSF 179 D1 SAFETY SIGNS GUARDRAIL HSIP STWD(647) CN9635000
Permittee as filedMontana Dept. of Transportation
NPDES IDMTR10I03A
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
IssuedApril 26, 2021
Expiration dateFebruary 15, 2022
Issuing agencyU.S. EPA
AddressHot Springs, MT 59845
SubwatershedCottonwood Creek (HUC 170102120804)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR10I03A.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES MTR10I03A.

Inspections

EPA’s inspection file holds no inspection for NPDES MTR10I03A.

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 MTR10I03A.

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Nearby on the register

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

What this page shows

The Cottonwood Creek subwatershed holds 2 NPDES permits, including the permit for SF 179 D1 SAFETY SIGNS GUARDRAIL HSIP STWD(647) CN9635000. Hot Springs has 4 storm water construction permits on EPA's NPDES register, including this permit. The permit has 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.