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Clean Water Act discharge permit · NPDES COR431950

LENA GULCH IMPROVEMENTS - REACH 1, Golden, CO: NPDES COR431950 discharge permit, effluent exceedances, inspections, penalties

LENA GULCH IMPROVEMENTS - REACH 1, held by Concrete Express, Inc., holds NPDES permit COR431950. EPA’s file records it issued September 8, 2026 and expiring March 31, 2029. 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 LENA GULCH IMPROVEMENTS - REACH 1: its NPDES ID, its permit type and status, its dates, its address in Golden, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR431950.

Identity

Facility as filedLENA GULCH IMPROVEMENTS - REACH 1
Permittee as filedConcrete Express, Inc.
NPDES IDCOR431950
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedSeptember 8, 2026
Expiration dateMarch 31, 2029
Issuing agencySTA
AddressGolden, CO 80401
SIC1629 – Heavy 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 COR431950.

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 COR431950.

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 COR431950 there.

Nearby on the register

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

What this page shows

This page covers NPDES permit COR431950 for LENA GULCH IMPROVEMENTS - REACH 1 in Golden, CO, held by Concrete Express, Inc., with a status of Effective and a discharger class of Minor. The permit record lists 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, and it shows no effluent or single-event violations.