Clean Water Act discharge permit · NPDES COR420556
HAPPY CANYON AT RIDGEGATE STREAM RESTORATION, Lone Tree, CO: NPDES COR420556 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
HAPPY CANYON AT RIDGEGATE STREAM RESTORATION, held by Concrete Express, Inc, holds NPDES permit COR420556. EPA’s file records it issued June 12, 2023 and expiring March 31, 2024.
HAPPY CANYON AT RIDGEGATE STREAM RESTORATION, Lone Tree, Colorado: Coverage under a general permit COR420556, held by Concrete Express, Inc; Administratively continued (past its expiration date and still in force until reissued); issued June 12, 2023, term to March 31, 2024, by STA.
Other permits held by Concrete Express, Inc
- CLEAR CREEK CANYON PARK: GATEWAY TO HUNTSMAN GULCH SEGMENT, Golden: COR416317, issued April 6, 2022
- BEAVER RANCH IMPROVEMENTS, Conifer: COR430751, issued May 4, 2026
HAPPY CANYON AT RIDGEGATE STREAM RESTORATION among its neighbors
EPA’s permit file holds 78 discharge permits in the Happy Canyon Creek-Cherry Creek subwatershed (HUC 101900030301), COR420556 among them. Its county holds 347, 5 of them major permits; COR420556 is a minor permit.
Other permits in the Happy Canyon Creek-Cherry Creek subwatershed (HUC 101900030301)
- ADVENTHEALTH PARKER FACILITY EXPANSION, Parker: COR426179, minor permit, permit term to March 31, 2029
- AMAZON.COM SERVICES LLS - SC02, Englewood: COR901709, minor permit, discharging to Dove Creek & Happy Camper Creek to Cherry Creek, permit term to June 30, 2029
- APPLEGREEN PARKER, Parker: COR427774, minor permit, permit term to March 31, 2029
- BADGER GULCH PARK, Lone Tree: COR430339, minor permit, permit term to March 31, 2029
- BADGER GULCH PEDESTRIAN BRIDGE, Lone Tree: COR426970, minor permit, permit term to March 31, 2029
- BADGER GULCH TRUNK SANITARY SEWER, Parker: COR423485, minor permit, permit term to March 31, 2029
- CASTLE PINES 2026 MAINTENANCE, Castle Pines: COR431483, minor permit, permit term to March 31, 2029
- CASTLE PINES NORTH METRO DIST MS4, Castle Pines: COR070215, minor permit, discharging to Unnamed Tributary to Happy Canyon Creek, permit term to March 9, 2013
- CASTLE PINES NORTH MS4, Castle Pines: COR080022, minor permit, discharging to Unnamed Tributary to Happy Canyon Creek, permit term to March 9, 2013
- CASTLE PINES PARKWAY, Castle Pines: COR427646, minor permit, permit term to March 31, 2029
What the register holds for HAPPY CANYON AT RIDGEGATE STREAM RESTORATION: its NPDES ID, its permit type and status, its dates, its address in Lone Tree, Colorado. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES COR420556.
Identity
| Facility as filed | HAPPY CANYON AT RIDGEGATE STREAM RESTORATION |
|---|---|
| Permittee as filed | Concrete Express, Inc |
| NPDES ID | COR420556 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | June 12, 2023 |
| Expiration date | March 31, 2024 |
| Issuing agency | STA |
| Address | Lone Tree, CO 80124 |
| Subwatershed | Happy Canyon Creek-Cherry Creek (HUC 101900030301) |
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 COR420556.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES COR420556.
Inspections
EPA’s inspection file holds no inspection for NPDES COR420556.
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 COR420556.
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, COR420556.
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- One watershed — $2,990/year
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Nearby on the register
- Discharge permits in Lone Tree
- Every permit record in Lone Tree, A to Z
- Discharge permits in Colorado
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.