Cedar Hills Adjacent Properties Deconstruction and Demolition

The Cedar Hills Adjacent Properties Deconstruction and Demolition project is a significant environmental restoration effort undertaken by King County to enhance landfill buffer zones near the Cedar Hills Regional Landfill Facility in Washington. Covering approximately 15.2 acres of privately developed land, the project involves the systematic removal and deconstruction of existing structures to restore and improve buffer functions, with the goal of mitigating environmental impacts associated with landfill operations. The project aims to remove non-conforming uses and structures within the buffer area, which spans roughly 22.4 acres, as detailed in a draft Critical Areas Report that assesses wetlands, streams, and other sensitive areas, ensuring environmental compliance and self-mitigating impacts during construction. The project is structured around a formal Invitation for Bids (IFB) issued in October 2025, with a bid deadline of October 21, 2025, and includes detailed technical specifications, permitting requirements, and environmental considerations. The engineer’s estimate for the project is approximately $1.59 million, with bidding schedules outlining scope and pricing expectations. The scope encompasses demolition of existing structures, site grading, erosion and dust control, and disposal procedures, supported by comprehensive permit documentation and drawings. The contract is managed by the Department of Natural Resources and Parks Solid Waste Division, with a primary contact for inquiries being Isaac Johnson. Overall, the project represents a critical effort to restore environmental buffers, comply with regulatory standards, and ensure sustainable land use adjacent to the landfill facility.