Cedar Hills Regional Landfill Area 5 & 6 Top Deck Development

This contract involves the comprehensive development of the top decks for Areas 5 and 6 at Cedar Hills Landfill, with work segmented into three phases across three refuse areas: Area 5 West, Area 5 East, and Area 6. The scope includes installing and maintaining erosion and sediment controls, removing existing infrastructure, modifying landfill gas systems, stripping and transporting soils, removing topsoil decks, and constructing stormwater ditches and conveyance systems to ensure proper drainage and stability. The project aims to enhance the landfill’s capacity and environmental management through these extensive site improvements. The project is managed by King County, Washington, with a contract value estimated between five and fifteen million dollars. The solicitation was posted on May 12, 2025, with a response deadline of June 3, 2025. The primary point of contact is Leeann Snyder, who can be reached via email. The work is set to be performed within Washington state, and the contract emphasizes large-scale infrastructure development to support landfill operations and environmental compliance.