The purpose of this project is to replace the existing HVAC systems at Marin County's Juvenile Hall facility. The project will include disengaging, removal, and disposal of the existing units (crane required), any structural modifications required to support the placement of the new units, adapting to the existing duct systems, balancing, and testing of each system per plans and specifications. This will also include the removal and replacement of the roof structures on the East and West wings to allow a crane to remove the existing units and place the new units. Removal and replacement of additional items as noted in the plans and specifications, including, but not limited to, electrical, plumbing, and control system elements, and asbestos abatement in identified areas. The affected areas include the Kitchen, Admin Offices, Classroom, Common area, North, East, South, and West Wings.