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Clean Water Act discharge permit · NPDES MTR104808

CMG CONSTRUCTION TWIN OAKS SUBDIVISION 2ND FILING PH 2, Billings, MT: NPDES MTR104808 discharge permit, effluent exceedances, inspections, penalties

CMG CONSTRUCTION TWIN OAKS SUBDIVISION 2ND FILING PH 2, held by CMG CONSTRUCTION INC, holds NPDES permit MTR104808, which discharges to City Of Billings Ms4. EPA’s file records it issued December 27, 2012 and expiring December 31, 2012. 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 CMG CONSTRUCTION TWIN OAKS SUBDIVISION 2ND FILING PH 2: its NPDES ID, its permit type and status, its dates, its address in Billings, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR104808.

Identity

Facility as filedCMG CONSTRUCTION TWIN OAKS SUBDIVISION 2ND FILING PH 2
Permittee as filedCMG CONSTRUCTION INC
NPDES IDMTR104808
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
IssuedDecember 27, 2012
Expiration dateDecember 31, 2012
Issuing agencyMONTANA DEQ
AddressBillings, MT 59105
Receiving waterCITY OF BILLINGS MS4
SubwatershedYellowstone River-Sevenmile Creek (HUC 100700070403)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MTR104808.

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 MTR104808.

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, MTR104808.

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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 MTR104808 there.

Nearby on the register

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

What this page shows

The CMG Construction Twin Oaks Subdivision 2nd Filing Ph 2 permit is one of 262 storm water construction permits on EPA's NPDES register in Yellowstone County, this one included, and 5.0% of those carry a violation on file. Among the 61 NPDES permits in the Yellowstone River-Sevenmile Creek subwatershed, this one included, it likewise shows no pollutant under a numeric limit and no effluent exceedance (both counted as 0).