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Clean Water Act discharge permit · NPDES MTR000735

ROCKY MOUNTAIN POWER, LLC, Hardin, MT: NPDES MTR000735 discharge permit, effluent exceedances, inspections, penalties

ROCKY MOUNTAIN POWER, LLC, held by ROCKY MOUNTAIN POWER LLC, holds NPDES permit MTR000735, which discharges to Bighorn River. 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 ROCKY MOUNTAIN POWER, LLC: its NPDES ID, its permit type and status, its its address in Hardin, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR000735.

Identity

Facility as filedROCKY MOUNTAIN POWER, LLC
Permittee as filedROCKY MOUNTAIN POWER LLC
NPDES IDMTR000735
Permit statusPending
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramIndustrial stormwater
AddressHardin, MT 59034
Receiving waterBIGHORN RIVER
SubwatershedBighorn River-Hardin (HUC 100800150704)
Other EPA IDs (FRS)RCRA handler MTR000202481; ICIS-AIR source MT0000003000300018

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR000735.

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 MTR000735.

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

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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 MTR000735 there.

Nearby on the register

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

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES MTR000735, held by ROCKY MOUNTAIN POWER LLC for ROCKY MOUNTAIN POWER, LLC in Hardin, MT, with a pending permit status and a minor discharger class. The page lists 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, and it reports no violation on file in EPA's effluent or single-event violation files for this permit.