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Clean Water Act discharge permit · NPDES COR423543

TARRYALL DAM REHABILITATION, Jefferson, CO: NPDES COR423543 discharge permit, effluent exceedances, inspections, penalties

TARRYALL DAM REHABILITATION, held by Zak Dirt, Inc., holds NPDES permit COR423543. EPA’s file records it issued April 30, 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 TARRYALL DAM REHABILITATION: its NPDES ID, its permit type and status, its dates, its address in Jefferson, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR423543.

Identity

Facility as filedTARRYALL DAM REHABILITATION
Permittee as filedZak Dirt, Inc.
NPDES IDCOR423543
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedApril 30, 2024
Expiration dateMarch 31, 2029
AddressJefferson, CO 80456
SubwatershedLower Tarryall (HUC 101900010503)

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 COR423543.

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 COR423543.

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 COR423543 there.

Nearby on the register

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

What this page shows

The TARRYALL DAM REHABILITATION permit is one of 1 NPDES permits in the Lower Tarryall subwatershed, the only one there, and it sits among 26 general permit coverages in Park County. Of those 26 coverages, 57.7% were issued earlier than this one, and 61.5% have a violation on file, while this permit shows 0 pollutants with an effluent exceedance.