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Clean Water Act discharge permit · NPDES COR426173

GUNBARREL SPINE, Boulder, CO: NPDES COR426173 discharge permit, effluent exceedances, inspections, penalties

GUNBARREL SPINE, held by SARES-REGIS Group, holds NPDES permit COR426173. EPA’s file records it issued December 18, 2024 and expiring March 31, 2029. 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 GUNBARREL SPINE: its NPDES ID, its permit type and status, its dates, its address in Boulder, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR426173.

Identity

Facility as filedGUNBARREL SPINE
Permittee as filedSARES-REGIS Group
NPDES IDCOR426173
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedDecember 18, 2024
Expiration dateMarch 31, 2029
Issuing agencySTA
AddressBoulder, CO 80301
SubwatershedBoulder Reservoir (HUC 101900050704)

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

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES COR426173.

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 COR426173.

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 COR426173 there.

Nearby on the register

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

What this page shows

The GUNBARREL SPINE general permit coverage (NPDES ID COR426173) in Boulder, Colorado, is one of 251 general permit coverages on EPA's NPDES register in Boulder County, and 25.5% of those coverages have a violation on file. Its permittee, SARES-REGIS Group, sits within the Boulder Reservoir subwatershed, which holds 25 NPDES permits including this one. The permit records zero pollutants under a numeric limit and zero pollutants with an effluent exceedance.