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Clean Water Act discharge permit · NPDES COR418493

NIVER CREEK OPEN SPACE, Thornton, CO: NPDES COR418493 discharge permit, effluent exceedances, inspections, penalties

NIVER CREEK OPEN SPACE, held by Naranjo Civil Constructors Inc, holds NPDES permit COR418493. EPA’s file records it issued October 14, 2022 and expiring March 31, 2024. 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 NIVER CREEK OPEN SPACE: 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 COR418493.

Identity

Facility as filedNIVER CREEK OPEN SPACE
Permittee as filedNaranjo Civil Constructors Inc
NPDES IDCOR418493
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
IssuedOctober 14, 2022
Expiration dateMarch 31, 2024
Issuing agencySTA
AddressThornton, CO 80260
SubwatershedCity of Thornton-South Platte River (HUC 101900030402)

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 COR418493.

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 COR418493.

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.

Watch this permit

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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 COR418493 there.

Nearby on the register

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

What this page shows

The NIVER CREEK OPEN SPACE permit, a general permit coverage in Thornton, Adams County, Colorado, is one of 463 such coverages in Adams County and one of 151 NPDES permits in the City of Thornton-South Platte River subwatershed. Among the 463 Adams County general permit coverages, 17.7% were issued earlier than this one, and 13.0% carry a violation on file, while it records 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance.