Specifications include, but are not limited to: • Selective demolition of existing HVAC equipment, ductwork, and piping in the mechanical rooms • Large-scale ventilation systems equipment addition and replacement • Preparation of field fabrication shop drawings for air handling units to be reconstructed • Addition of a new fan-coil unit and fresh air duct for the Security Operations Center • Wet heating systems piping modifications for new heating water coils • Chilled water systems piping modifications for new chilled water coils • Steam and condensate systems modifications for new humidifiers • Addition of adjustable speed motor drives to existing heating water pumps • Rehabilitation of housings for existing field-erected air handling units • Addition of a fan-coil unit for the Security Operations Center • Phased construction to maintain continuity of HVAC service to spaces • Temporary duct connections to maintain continuity of HVAC service to spaces • Installation of new automatic control field devices and hardware.