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Clean Water Act discharge permit · NPDES COG317175

HAZELTINE RESERVOIR, Henderson, CO: NPDES COG317175 discharge permit, effluent exceedances, inspections, penalties

HAZELTINE RESERVOIR, held by Hensel Phelps Construction Co, holds NPDES permit COG317175, which discharges to South Platte River. EPA’s file records it issued November 25, 2024 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.

Identity

Facility as filedHAZELTINE RESERVOIR
Permittee as filedHensel Phelps Construction Co
NPDES IDCOG317175
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedNovember 25, 2024
Expiration dateMay 31, 2028
AddressHenderson, CO 80640
Receiving waterSouth Platte River
SubwatershedTodd Creek-South Platte River (HUC 101900030405)

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

Effluent limits and exceedances

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 116 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended222July 31, 2025429% over the limit
Iron, total recoverable331July 31, 202598% over the limit
Arsenic, total recoverable320
Selenium, total recoverable220
Thallium, total recoverable220
Beryllium, total recoverable [as Be]220
Barium, total recoverable220
Iron, dissolved [as Fe]220
Manganese, dissolved [as Mn]220
Nickel, total recoverable220
Silver total recoverable220
Zinc, total recoverable220
Aluminum, total recoverable220
Cadmium, total recoverable220
Lead, total recoverable220
Chromium, total recoverable220
Copper, total recoverable220
Molybdenum, total recoverable220
Chromium, hexavalent dissolved [as Cr]220
Antimony, total recoverable220
Zinc, potentially dissolved220
Silver, potentially dissolved220
Copper, potentially dissolved220
Arsenic, potentially dissolved220
Cadmium, potentially dissolvd220
Chromium, trivalent, potentially dissolvd220
Lead, potentially dissolvd220
Manganese, potentially dissolvd220
Nickel, potentially dissolvd220
Selenium, potentially dissolvd220
Thallium, potentially dissolvd220
Uranium, potentially dissolvd220
Total phenols220
Chromium, trivalent total recoverable220
Uranium, total220
Acenaphthene220
Anthracene220
Benzo[k]fluoranthene220
Benzo[a]pyrene220
Bis[2-chloroethyl] ether220
Bis[2-chloroisopropyl] ether220
Butyl benzyl phthalate220
Chlorodibromomethane220
Chrysene220
Diethyl phthalate220
Dimethyl phthalate220
1,2-Diphenylhydrazine220
Fluoranthene220
Fluorene220
Hexachlorocyclopentadiene220
Hexachloroethane220
Indeno[1,2,3-cd]pyrene220
Isophorone220
Methyl bromide [Bromomethane]220
N-Nitrosodi-N-propylamine220
N-Nitrosodiphenylamine220
N-Nitrosodimethylamine [NDMA]220
Nitrobenzene220
Pyrene220
1,1-Dichloroethylene220

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 COG317175.

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 COG317175 there.

Nearby on the register

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

What this page shows

This public-records page covers NPDES permit COG317175 for HAZELTINE RESERVOIR in Henderson, CO, held by Hensel Phelps Construction Co and discharging to the South Platte River, with the permit status listed as Effective. The page lists 116 pollutants on file, of which 91 are under a numeric limit and 2 have an effluent exceedance.