The Work required under the Contract shall consist of, but is not limited to, mobilization on site in the areas defined for the Contractor's physical plant and lay-down area; installation of the project sign; installation of temporary ventilation when so required; demolition of HVAC, plumbing, and electrical equipment, piping and valves, and installation of new HVAC, plumbing, and electrical equipment, piping and valves; general site and structural improvements at the existing roof structure; replacement of existing doors at the main level of the Pump Station; new ventilation system and gas detection controls; start-up testing and instructional training due to HVAC equipment improvements; punch-list work; demobilization of the Contractor's physical plant; site clean-up, and a surface restoration and treatment upon Project completion, (collectively, the "Work").