Clean Water Act discharge permit · NPDES COG081216
HAPPY CANYON AT RIDGEGATE STREAM RESTORATION - PHASES 2-4, Lone Tree, CO: NPDES COG081216 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
HAPPY CANYON AT RIDGEGATE STREAM RESTORATION - PHASES 2-4, held by Concrete Express Inc, holds NPDES permit COG081216, which discharges to Happy Canyon Creek. EPA’s file records it issued April 14, 2025 and expiring May 31, 2028. 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 HAPPY CANYON AT RIDGEGATE STREAM RESTORATION - PHASES 2-4: its NPDES ID, its permit type and status, its dates, its address in Lone Tree, Colorado, its receiving water, and 7 pollutants under a numeric limit. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COG081216.
Identity
| Facility as filed | HAPPY CANYON AT RIDGEGATE STREAM RESTORATION - PHASES 2-4 |
|---|---|
| Permittee as filed | Concrete Express Inc |
| NPDES ID | COG081216 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | April 14, 2025 |
| Expiration date | May 31, 2028 |
| Address | Lone Tree, CO 80124 |
| Receiving water | Happy Canyon Creek |
| Subwatershed | Happy Canyon Creek-Cherry Creek (HUC 101900030301) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 7Pollutants on file
- 7Under a numeric limit
- 0With a violation of any kind
- 0With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| pH | 14 | 0 | 0 | ||
| Solids, total suspended | 14 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 14 | 0 | 0 | ||
| Oil and grease | 7 | 0 | 0 | ||
| Flow, total | 7 | 0 | 0 | ||
| Duration of discharge | 7 | 0 | 0 | ||
| Oil and grease visual | 7 | 0 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES COG081216.
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 COG081216.
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 COG081216 there.
Nearby on the register
- Discharge permits in Lone Tree
- Every permit record in Lone Tree, A to Z
- Discharge permits in Colorado
- Every permit record in Colorado, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.