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Clean Water Act discharge permit · NPDES COR900464

ARDENT MILLS COMMERCE CITY, Commerce City, CO: NPDES COR900464 discharge permit, effluent exceedances, inspections, penalties

ARDENT MILLS COMMERCE CITY, held by Ardent Mills LLC, holds NPDES permit COR900464, which discharges to O'Brian Canal -Denver Hudson Canal. EPA’s file records it issued May 31, 2012 and expiring June 30, 2017. 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 ARDENT MILLS COMMERCE CITY: its NPDES ID, its permit type and status, its dates, its address in Commerce City, Colorado, its receiving water, and 1 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR900464.

Identity

Facility as filedARDENT MILLS COMMERCE CITY
Permittee as filedArdent Mills LLC
NPDES IDCOR900464
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
ProgramIndustrial stormwater
IssuedMay 31, 2012
Expiration dateJune 30, 2017
AddressCommerce City, CO 80022
Receiving waterO'Brian Canal -Denver Hudson Canal
Other EPA IDs (FRS)RCRA handler COR000206268; ICIS-AIR source CO0000000800100087

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

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended100

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COR900464.

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 COR900464.

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.

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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 COR900464 there.

Nearby on the register

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

What this page shows

The page covers NPDES permit COR900464 held by Ardent Mills LLC for ARDENT MILLS COMMERCE CITY in Commerce City, Colorado, which discharges to O'Brian Canal-Denver Hudson Canal and is classed as a minor discharger. The register lists 1 pollutant under a numeric limit and 0 pollutants with an effluent exceedance, with the permit shown as administratively continued.