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Clean Water Act discharge permit · NPDES COG318108

BOULDER OPEN SPACE SEEP OUTFALLS 002A AND 003A, Boulder, CO: NPDES COG318108 discharge permit, effluent exceedances, inspections, penalties

BOULDER OPEN SPACE SEEP OUTFALLS 002A AND 003A, held by Raytheon Company, holds NPDES permit COG318108, which discharges to Unnamed Tributary - Left Hand Valley Reservoir. EPA’s file records it issued May 13, 2022 and expiring May 31, 2028. 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.

Identity

Facility as filedBOULDER OPEN SPACE SEEP OUTFALLS 002A AND 003A
Permittee as filedRaytheon Company
NPDES IDCOG318108
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedMay 13, 2022
Expiration dateMay 31, 2028
AddressBoulder, CO 80302
Receiving waterunnamed tributary - Left Hand Valley Reservoir
SubwatershedBoulder Reservoir (HUC 101900050704)
SIC9512 – Land, Mineral, Wildlife Conservation

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

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 118 are shown.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Iron, total recoverable64545June 30, 20251,040% over the limit
Manganese, dissolved [as Mn]64241July 31, 20261,133% over the limit
Vinyl chloride64040December 31, 202529,161% over the limit
1,4-Dioxane988February 28, 2025494% over the limit
Flow, in conduit or thru treatment plant877May 31, 2025128% over the limit
Solids, total suspended866April 30, 2024353% over the limit
1,2-cis-Dichloroethylene444November 30, 202515% over the limit
Iron, dissolved [as Fe]633June 30, 20233,087% over the limit
Static Renewal 7 Day Chronic Ceriodaphnia dubia911June 30, 202639% over the limit
Benzidine240
Uranium, total1120
Manganese, potentially dissolvd620
Uranium, potentially dissolvd220
Acrolein220
Bis[2-chloroisopropyl] ether220
1,2-Diphenylhydrazine220
2-Chloronaphthalene220
3,3'-Dichlorobenzidine220
4,6-Dinitro-o-cresol220
1,3-Dichloropropylene220
Selenium, potentially dissolvd1900
Nickel, potentially dissolvd1300
Tetrachloroethylene1100
Trichloroethylene1000
Nickel, total recoverable900
Static Renewal 7 Day Chronic Pimephales promelas900
pH800
trans-1,2-Dichloroethylene700
Arsenic, total recoverable600
Benzene600
Chlorine, total residual600
Oil and grease400
1,1-Dichloroethylene400
Flow, total400
Oil and grease visual400
Selenium, total recoverable200
Thallium, total recoverable200
Beryllium, total recoverable [as Be]200
Barium, total recoverable200
Silver total recoverable200
Zinc, total recoverable200
Aluminum, total recoverable200
Cadmium, total recoverable200
Lead, total recoverable200
Chromium, total recoverable200
Copper, total recoverable200
Molybdenum, total recoverable200
Chromium, hexavalent dissolved [as Cr]200
Antimony, total recoverable200
Zinc, potentially dissolved200
Silver, potentially dissolved200
Copper, potentially dissolved200
Arsenic, potentially dissolved200
Cadmium, potentially dissolvd200
Chromium, trivalent, potentially dissolvd200
Lead, potentially dissolvd200
Thallium, potentially dissolvd200
Total phenols200
Chromium, trivalent total recoverable200
Carbon tetrachloride200

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 COG318108.

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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Nearby on the register

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

What this page shows

This public-records page covers NPDES permit COG318108 for BOULDER OPEN SPACE SEEP OUTFALLS 002A AND 003A in Boulder, CO, held by Raytheon Company, with an Effective permit status and a Minor discharger class. The page lists 118 for the discharger class figure, 9 pollutants under a numeric limit, and 9 pollutants with an effluent exceedance.