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Clean Water Act discharge permit · NPDES COR423347

THIRD CREEK F2-5 LD-HB, Commerce City, CO: NPDES COR423347 discharge permit, effluent exceedances, inspections, penalties

THIRD CREEK F2-5 LD-HB, held by Lennar Colorado LLC, holds NPDES permit COR423347. EPA’s file records it issued April 11, 2024 and expiring March 31, 2029. 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 THIRD CREEK F2-5 LD-HB: its NPDES ID, its permit type and status, its dates, its address in Commerce City, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR423347.

Identity

Facility as filedTHIRD CREEK F2-5 LD-HB
Permittee as filedLennar Colorado LLC
NPDES IDCOR423347
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedApril 11, 2024
Expiration dateMarch 31, 2029
AddressCommerce City, CO 80022
SubwatershedThird Creek (HUC 101900030404)

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 COR423347.

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 COR423347.

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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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 COR423347 there.

Nearby on the register

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

What this page shows

The THIRD CREEK F2-5 LD-HB permit is one of 463 general permit coverages in Adams County, and it sits among 49 NPDES permits in the Third Creek subwatershed. Among the Adams County coverages, 13.0% have a violation on file, while this permit records none of the numeric-limit pollutants or effluent exceedances, and 25.1% of the county's coverages carry an earlier issue date than this one.