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Clean Water Act discharge permit · NPDES MTR104638

CENTURY COMPANIES - SHELBY AIRPORT TAXIWAY IMPROVEMENTS, Shelby, MT: NPDES MTR104638 discharge permit, effluent exceedances, inspections, penalties

CENTURY COMPANIES - SHELBY AIRPORT TAXIWAY IMPROVEMENTS, held by CENTURY COMPANIES INC, holds NPDES permit MTR104638, which discharges to Drain Channel. EPA’s file records it issued July 23, 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 CENTURY COMPANIES - SHELBY AIRPORT TAXIWAY IMPROVEMENTS: its NPDES ID, its permit type and status, its dates, its address in Shelby, Montana, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MTR104638.

Identity

Facility as filedCENTURY COMPANIES - SHELBY AIRPORT TAXIWAY IMPROVEMENTS
Permittee as filedCENTURY COMPANIES INC
NPDES IDMTR104638
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
IssuedJuly 23, 2012
Expiration dateDecember 31, 2012
Issuing agencyMONTANA DEQ
AddressShelby, MT 59474
Receiving waterDRAIN CHANNEL

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 MTR104638.

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 MTR104638.

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, MTR104638.

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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 MTR104638 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 NPDES permit MTR104638, held by CENTURY COMPANIES INC for CENTURY COMPANIES - SHELBY AIRPORT TAXIWAY IMPROVEMENTS in Shelby, MT, discharging to Drain Channel, with a status of administratively continued. The register lists 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, and records a minor discharger class.