This project involves the interim and final closure for Refuse Area 8 Stage 1, and the demolition and excavation of Area 9. Work in Area 8 includes but is not limited to, 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, stormwater ditches, conveyance systems, stripping and subgrade preparation, installation of a contaminated stormwater flap, and all other work in the contract documents. Work in Area 9 includes but is not limited to stockpile removal, soil and underground storage tank removal, demolition of building foundations and structures, sediment and erosion controls, utility and infrastructure removal, installation of conveyance piping, stormwater ditches and controls, installation of seep controls, and all other work in the contract documents.