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Clean Water Act discharge permit · NPDES COR430739

HIGHLANDS RANCH PARKWAY BROADWAY TO BURNTWOOD, Highlands Ranch, CO: NPDES COR430739 discharge permit, effluent exceedances, inspections, penalties

HIGHLANDS RANCH PARKWAY BROADWAY TO BURNTWOOD, held by Castle Rock Construction Company of Colorado, LLC, holds NPDES permit COR430739. EPA’s file records it issued May 5, 2026 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 HIGHLANDS RANCH PARKWAY BROADWAY TO BURNTWOOD: its NPDES ID, its permit type and status, its dates, its address in Highlands Ranch, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR430739.

Identity

Facility as filedHIGHLANDS RANCH PARKWAY BROADWAY TO BURNTWOOD
Permittee as filedCastle Rock Construction Company of Colorado, LLC
NPDES IDCOR430739
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedMay 5, 2026
Expiration dateMarch 31, 2029
AddressHighlands Ranch, CO 80126
SubwatershedDutch Creek-South Platte River (HUC 101900020901)

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 COR430739.

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 COR430739.

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 COR430739 there.

Nearby on the register

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

What this page shows

The HIGHLANDS RANCH PARKWAY BROADWAY TO BURNTWOOD coverage, NPDES ID COR430739, is one of 289 general permit coverages in Douglas County, and 91.0% of those were issued earlier than this one. Among the 85 NPDES permits in the Dutch Creek-South Platte River subwatershed, this coverage is listed alongside the others, and 12.5% of the 289 Douglas County coverages have a violation on file, while this permit has no pollutants under a numeric limit and no effluent exceedances.