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Clean Water Act discharge permit · NPDES COG500268

WALSTRUM QUARRY, Idaho Springs, CO: NPDES COG500268 discharge permit, effluent exceedances, inspections, penalties

WALSTRUM QUARRY, held by Albert Frei and Sons Inc, holds NPDES permit COG500268, which discharges to Clear Creek. EPA’s file records it issued June 16, 2008 and expiring June 30, 2013. 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 filedWALSTRUM QUARRY
Permittee as filedAlbert Frei and Sons Inc
NPDES IDCOG500268
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJune 16, 2008
Expiration dateJune 30, 2013
AddressIdaho Springs, CO 80452
Receiving waterCLEAR CREEK
SubwatershedCity of Idaho Springs-Clear Creek (HUC 101900040207)
SIC1423 – Crushed And Broken Granite
Other EPA IDs (FRS)ICIS-AIR source CO0000000804700010

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

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.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended2102July 31, 202147% over the limit
Lead, potentially dissolvd2150
Zinc, potentially dissolved2140
Flow, in conduit or thru treatment plant2140
Cadmium, potentially dissolvd0100
pH280
Oil and grease140
Oil and grease visual140
Flow, total030

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 COG500268.

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 COG500268 there.

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 COG500268 for WALSTRUM QUARRY in Idaho Springs, CO, held by Albert Frei and Sons Inc, which discharges to Clear Creek and is administratively continued as a Minor Discharger class permit. The permit file lists 1 pollutant under a numeric limit and 1 pollutant with an effluent exceedance, with the permit issued June 16, 2008 and expiring June 30, 2013.