Specifications include, but are not limited to: mechanical system renovations to the second floor of the Marquardt Building. Work consists of selective demolition work of the existing second floor mechanical system as well as the removal and salvage of the existing suspended acoustical ceiling panels and light fixtures for reinstallation. New work includes provision of a steam to water heat exchanger within the first floor mechanical room, second floor HVAC system replacement, rooftop mechanical units, mechanical chases, provision of a suspended acoustical ceiling grid system and the reinstallation of the salvaged acoustical ceiling panels and lighting fixtures as well as associated architectural and electrical work required in support of the HVAC system repairs and replacement.