Clean Water Act discharge permit · NPDES COR429417

SAMPSON GULCH AT AURORA PARKWAY, Aurora, CO: NPDES COR429417 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance

SAMPSON GULCH AT AURORA PARKWAY, held by Mile High Flood District, holds NPDES permit COR429417. EPA’s file records it issued December 29, 2025 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 SAMPSON GULCH AT AURORA PARKWAY: its NPDES ID, its permit type and status, its dates, its address in Aurora, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR429417.

Identity

Facility as filed	SAMPSON GULCH AT AURORA PARKWAY
Permittee as filed	Mile High Flood District
NPDES ID	COR429417
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	December 29, 2025
Expiration date	March 31, 2029
Issuing agency	STA
Address	Aurora, CO 80016
Subwatershed	Piney Creek (HUC 101900030302)
SIC	1629 – 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

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES COR429417.

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES COR429417.

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 COR429417 there.

Nearby on the register

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

This public-records page covers NPDES permit COR429417 for SAMPSON GULCH AT AURORA PARKWAY in Aurora, CO, held by Mile High Flood District, with an effective permit status, a Minor discharger class, and an issued date of December 29, 2025 and an expiration date of March 31, 2029. The page lists 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, and it records no violation for this permit in EPA's effluent or single-event violation files.