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Clean Water Act discharge permit · NPDES MTR109874

SIGNAL PEAK ENERGY - PORTAL 4 AT THE BULL MOUNTAIN MINE NO 1, Roundup, MT: NPDES MTR109874 discharge permit, effluent exceedances, inspections, penalties

SIGNAL PEAK ENERGY - PORTAL 4 AT THE BULL MOUNTAIN MINE NO 1, held by SIGNAL PEAK ENERGY LLC, holds NPDES permit MTR109874, which discharges to Rehder Creek. EPA’s file records it issued January 25, 2023 and expiring December 31, 2027. 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 SIGNAL PEAK ENERGY - PORTAL 4 AT THE BULL MOUNTAIN MINE NO 1: its NPDES ID, its permit type and status, its dates, its address in Roundup, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR109874.

Identity

Facility as filedSIGNAL PEAK ENERGY - PORTAL 4 AT THE BULL MOUNTAIN MINE NO 1
Permittee as filedSIGNAL PEAK ENERGY LLC
NPDES IDMTR109874
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJanuary 25, 2023
Expiration dateDecember 31, 2027
AddressRoundup, MT 59072
Receiving waterREHDER CREEK
SubwatershedUpper Fattig Creek (HUC 100402020201)
SIC1222 – Bituminous Coal - Underground

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 MTR109874.

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 MTR109874.

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, MTR109874.

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  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
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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 MTR109874 there.

Nearby on the register

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

What this page shows

The Signal Peak Energy LLC permit, filed as SIGNAL PEAK ENERGY - PORTAL 4 AT THE BULL MOUNTAIN MINE NO 1, is the only NPDES permit in the Upper Fattig Creek subwatershed, which makes it the sole such permit in that watershed. Among the 15 storm water construction permits in Musselshell County, 80.0% were issued earlier than this one, and 13.3% of that same group carry a violation on file. This permit has no pollutants under a numeric limit and no pollutants with an effluent exceedance.