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Clean Water Act discharge permit · NPDES COR427942

GRIG'S ROAD IMPROVEMENT, Littleton, CO: NPDES COR427942 discharge permit, effluent exceedances, inspections, penalties

GRIG'S ROAD IMPROVEMENT, held by Elite Surface Infrastructure, holds NPDES permit COR427942. EPA’s file records it issued June 23, 2025 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 GRIG'S ROAD IMPROVEMENT: its NPDES ID, its permit type and status, its dates, its address in Littleton, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR427942.

Identity

Facility as filedGRIG'S ROAD IMPROVEMENT
Permittee as filedElite Surface Infrastructure
NPDES IDCOR427942
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedJune 23, 2025
Expiration dateMarch 31, 2029
AddressLittleton, CO 80126
SubwatershedBig Dry Creek (HUC 101900020902)

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 COR427942.

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 COR427942.

Inspections

EPA’s inspection file holds no inspection for NPDES COR427942.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES COR427942.

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 COR427942 there.

Nearby on the register

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

What this page shows

The GRIG'S ROAD IMPROVEMENT permit is one of 289 general permit coverages in Douglas County, and 66.4% of those 289 were issued earlier than this one. It also sits among 19 NPDES permits in the Big Dry Creek subwatershed, and it has no pollutants under a numeric limit and no effluent exceedances on file.