Clean Water Act discharge permit · NPDES COG317232

NORTH DRY GULCH CP3 IMPROVEMENTS, Lakewood, CO: NPDES COG317232 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
115Pollutants under a numeric limit
0Pollutants with an effluent exceedance

NORTH DRY GULCH CP3 IMPROVEMENTS, held by American West Construction LLC, holds NPDES permit COG317232, which discharges to North Dry Gulch. EPA’s file records it issued October 24, 2025 and expiring May 31, 2028. 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 NORTH DRY GULCH CP3 IMPROVEMENTS: its NPDES ID, its permit type and status, its dates, its address in Lakewood, Colorado, its receiving water, and 115 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COG317232.

Identity

Facility as filed	NORTH DRY GULCH CP3 IMPROVEMENTS
Permittee as filed	American West Construction LLC
NPDES ID	COG317232
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	October 24, 2025
Expiration date	May 31, 2028
Address	Lakewood, CO 80214
Receiving water	North Dry Gulch
Subwatershed	101900020904 (HUC 101900020904)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

115Pollutants on file
115Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

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; the 60 with the most exceedances of 115 are shown.

Pollutant or measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Zinc, potentially dissolved	24	0	0
Copper, potentially dissolved	24	0	0
Selenium, potentially dissolvd	24	0	0
pH	22	0	0
Solids, total suspended	22	0	0
Flow, in conduit or thru treatment plant	22	0	0
Chlorine, total residual	22	0	0
E. coli	22	0	0
Iron, total recoverable	13	0	0
Oil and grease	11	0	0
Flow, total	11	0	0
Oil and grease visual	11	0	0
Arsenic, total recoverable	2	0	0
Selenium, total recoverable	2	0	0
Thallium, total recoverable	2	0	0
Beryllium, total recoverable [as Be]	2	0	0
Barium, total recoverable	2	0	0
Iron, dissolved [as Fe]	2	0	0
Manganese, dissolved [as Mn]	2	0	0
Nickel, total recoverable	2	0	0
Silver total recoverable	2	0	0
Zinc, total recoverable	2	0	0
Aluminum, total recoverable	2	0	0
Cadmium, total recoverable	2	0	0
Lead, total recoverable	2	0	0
Chromium, total recoverable	2	0	0
Copper, total recoverable	2	0	0
Molybdenum, total recoverable	2	0	0
Chromium, hexavalent dissolved [as Cr]	2	0	0
Antimony, total recoverable	2	0	0
Silver, potentially dissolved	2	0	0
Arsenic, potentially dissolved	2	0	0
Cadmium, potentially dissolvd	2	0	0
Chromium, trivalent, potentially dissolvd	2	0	0
Lead, potentially dissolvd	2	0	0
Manganese, potentially dissolvd	2	0	0
Nickel, potentially dissolvd	2	0	0
Thallium, potentially dissolvd	2	0	0
Uranium, potentially dissolvd	2	0	0
Total phenols	2	0	0
Chromium, trivalent total recoverable	2	0	0
Uranium, total	2	0	0
Carbon tetrachloride	2	0	0
1,2-Dichloroethane	2	0	0
Bromoform	2	0	0
Chloroform	2	0	0
Toluene	2	0	0
Benzene	2	0	0
Acenaphthene	2	0	0
Acrolein	2	0	0
Anthracene	2	0	0
Benzo[k]fluoranthene	2	0	0
Benzo[a]pyrene	2	0	0
Bis[2-chloroethyl] ether	2	0	0
Bis[2-chloroisopropyl] ether	2	0	0
Butyl benzyl phthalate	2	0	0
Chlorobenzene	2	0	0
Chlorodibromomethane	2	0	0
Chrysene	2	0	0
Diethyl phthalate	2	0	0

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG317232.

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 COG317232.

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 COG317232 there.

Nearby on the register

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