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Clean Water Act discharge permit · NPDES COR420865

THORNTON POLICE DEPT. SHOOTING RANGE, Thornton, CO: NPDES COR420865 discharge permit, effluent exceedances, inspections, penalties

THORNTON POLICE DEPT. SHOOTING RANGE, held by O-A-K Colorado LLC, holds NPDES permit COR420865. EPA’s file records it issued July 17, 2023 and expiring March 31, 2024. 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.

What the register holds for THORNTON POLICE DEPT. SHOOTING RANGE: its NPDES ID, its permit type and status, its dates, its address in Thornton, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR420865.

Identity

Facility as filedTHORNTON POLICE DEPT. SHOOTING RANGE
Permittee as filedO-A-K Colorado LLC
NPDES IDCOR420865
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
IssuedJuly 17, 2023
Expiration dateMarch 31, 2024
Issuing agencySTA
AddressThornton, CO 80229
SubwatershedCity of Thornton-South Platte River (HUC 101900030402)
SIC1542 – Nonresidential Construction

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

EPA’s limits and effluent violation files hold no pollutant row for NPDES COR420865.

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 COR420865.

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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How we handle your data → Privacy

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 COR420865 there.

Nearby on the register

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

What this page shows

Violations are on file for 0.0% of the 9 general permit coverages in Thornton, and THORNTON POLICE DEPT. SHOOTING RANGE is among them. The City of Thornton-South Platte River subwatershed holds 151 NPDES permits, a total that includes THORNTON POLICE DEPT. SHOOTING RANGE.