Get Full Government Meeting Transcripts, Videos, & Alerts Forever!
Get email alerts on the Environment Restoration topic
No spam. Unsubscribe anytime.
BOCC approves Mainland Ranch stream restoration plan and activity envelope after multi‑agency review
Summary
The board granted activity envelope and site‑plan approval for stream restoration work on Collins Creek and Woody Creek through Mainland Ranch parcels; the project includes reconstruction of channel reaches, debris‑flow mitigation, multiple permits and agency oversight, and seasonal construction windows.
Pitkin County commissioners approved an activity envelope and site‑plan application permitting restoration work on portions of Collins Creek and Woody Creek on Mainland Ranch parcels 1 and 4 (also called the 4 Sons Ranch).
Staff referred the application to Colorado Parks and Wildlife, the Colorado Geological Survey (CGS), the U.S. Army Corps of Engineers, Aspen Valley Land Trust (AVLT), Pitkin County Open Space & Trails and the Woody Creek Caucus; those agencies and referral bodies participated in multiple site visits and provided comments that led to conditions in the county’s draft resolution.
The project team, led by DHM Design with Wright Water Engineers and Urbani Fisheries among others, described a tiered approach: a full reconstruction of an upper Collins Creek reach to reestablish a meandering thalweg and reconnect floodplain areas; targeted in‑stream pool and riffle work in lower Collins Creek; and more limited bed and bank work in Woody Creek. The application also includes a debris‑flow mitigation channel in an upland reach, bank stabilization, wetland bench restoration, and revegetation with native species sourced where possible from the site.
The application already includes several Army Corps nationwide permits (including a nationwide 27 for habitat projects and other authorizations for crossings) for work that has been completed or is under construction; additional Corps authorization is anticipated to be finalized as part of the earthmoving and floodplain permit reviews. The county’s planning engineer and the Colorado Geological Survey reviewed project engineering and geologic hazard analyses; CGS generally agreed with the hazard‑mitigation approach.
Commissioners and the project team discussed mitigation of construction impacts: the applicant provided a conceptual construction management plan with turbidity and erosion controls, time‑of‑year restrictions to protect spawning fish and nesting birds, weekly reporting during construction to the county planning engineer, and a weed‑management plan. Project representatives said the principal construction window for in‑stream work is typically in late summer/early fall (applicants cited an implementation window roughly August 15–October 15) to minimize impacts to fisheries and wildlife; the work is expected to be phased and may occur over multiple seasons. The project team said they will harvest willow and other plant material from the site for use in restoration plantings, employ natural woody material for in‑channel structures and avoid herbicide use where possible.
The board opened a public hearing; nearby residents raised concerns about construction traffic, speed and impacts to Woody Creek Road and the need for wildlife‑friendly fencing. The applicant agreed to work with neighbors and to provide weekly reporting during construction; the board included conditions about dust and mud control and coordination with the Woody Creek Caucus and AVLT.
Commissioner Jeffrey Woodruff moved approval; Commissioner Francie Jacober seconded. The resolution passed by voice vote. Staff will require a detailed construction‑management plan, weed‑management plan and the required Corps permits before issuing any earthmoving or floodplain permits, and monitoring and reporting will be required under the county and Corps processes.
