Clean Water Act discharge permit · NPDES COR430583

SILVERSTONE COMMONS, Frederick, CO: NPDES COR430583 discharge permit, effluent exceedances, inspections, penalties

EffectivePermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance

SILVERSTONE COMMONS, held by Stout Building Contractors, LLC, holds NPDES permit COR430583. EPA’s file records it issued April 21, 2026 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 SILVERSTONE COMMONS: its NPDES ID, its permit type and status, its dates, its address in Frederick, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR430583.

Identity

Facility as filed	SILVERSTONE COMMONS
Permittee as filed	Stout Building Contractors, LLC
NPDES ID	COR430583
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	April 21, 2026
Expiration date	March 31, 2029
Address	Frederick, CO 80514
Subwatershed	Firestone Lake-Saint Vrain Creek (HUC 101900050707)

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

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES COR430583.

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES COR430583.

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

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, COR430583.

Start the watch

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 COR430583 there.

Nearby on the register

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

The SILVERSTONE COMMONS general permit coverage, NPDES ID COR430583, issued to Stout Building Contractors, LLC in Frederick, Weld County, Colorado, sits among 596 general permit coverages in Weld County, and about 93.3% of all 595 Weld County coverages other than it were issued earlier. It is one of 111 NPDES permits in the Firestone Lake-Saint Vrain Creek subwatershed, and it has no pollutants under a numeric limit and no pollutants with an effluent exceedance. Among the 596 Weld County general permit coverages, 21.3% have a violation on file, a figure that this permit's record does not reflect.