Cedar Hills Regional Landfill Area 8 Closure Area 9 Demolition and Excavation

Background
The Cedar Hills Regional Landfill project is initiated by King County, which aims to manage waste effectively while ensuring environmental safety. The contract focuses on the interim and final closure of Refuse Area 8 Stage 1 and the demolition and excavation of Area 9. The goal is to implement necessary environmental controls and infrastructure improvements at the landfill site.

Work Details
The project involves multiple tasks in both Area 8 and Area 9:

**Area 8 Work Includes:**
- Installation of an interim and final cover system using geomembrane or other geosynthetic materials.
- Installation of erosion and sediment controls.
- Installation of landfill gas system components.
- Construction of stormwater ditches and conveyance systems.
- Stripping and subgrade preparation.
- Installation of a contaminated stormwater flap.

**Area 9 Work Includes:**
- Removal of stockpiles.
- Soil and underground storage tank removal.
- Demolition of building foundations and structures.
- Implementation of sediment and erosion controls.
- Utility and infrastructure removal.
- Installation of conveyance piping, stormwater ditches, seep controls, and other related tasks as specified in the contract documents.

Period of Performance
The contract will be performed over a specified timeframe that aligns with the project milestones, starting from the award date until completion. Specific deadlines for various phases are outlined in the solicitation documents.

Place of Performance
The work will be conducted at the Cedar Hills Regional Landfill located in King County, Washington.