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Clean Water Act discharge permit · NPDES MTR105559

GREY ROCK MAJOR SUBDIVISION, Helena, MT: NPDES MTR105559 discharge permit, effluent exceedances, inspections, penalties

GREY ROCK MAJOR SUBDIVISION, held by BRAD MOE, holds NPDES permit MTR105559, which discharges to Lake Helena. EPA’s file records it issued May 15, 2014 and expiring December 31, 2017. 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 GREY ROCK MAJOR SUBDIVISION: its NPDES ID, its permit type and status, its dates, its address in Helena, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR105559.

Identity

Facility as filedGREY ROCK MAJOR SUBDIVISION
Permittee as filedBRAD MOE
NPDES IDMTR105559
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
IssuedMay 15, 2014
Expiration dateDecember 31, 2017
Issuing agencyMONTANA DEQ
AddressHelena, MT 59602
Receiving waterLAKE HELENA
SubwatershedLake Helena (HUC 100301011504)
SIC1611 – Highway And Street Construction

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 MTR105559.

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 MTR105559.

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, MTR105559.

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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 MTR105559 there.

Nearby on the register

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

What this page shows

The GREY ROCK MAJOR SUBDIVISION permit is one of 145 storm water construction permits on EPA's NPDES register in Lewis and Clark County, this one included, and 13.1% of those 145 carry a violation on file. Among the 133 storm water construction permits in Lewis and Clark County, this one included, 27.8% were issued earlier than this permit's May 15, 2014 date. The permit has no pollutants under a numeric limit and no pollutants with an effluent exceedance, both counted as 0.