Specifications include, but are not limited to: 1.Construction of new thermal energy piping systems from an existing distribution piping valve vault to building service by open trench and boring for installation of the pipe lines. Thermal energy piping systems include direct buried prefabricated conduit type system for heating hot water, and high-density polyethylene (HDPE) pipe for chilled water distribution system except piping inside valve vaults is field insulated black carbon steel pipe and fittings. 2.Installation of direct buried contractor furnished pre-fabricated insulated/jacketed heating hot water and HDPE chilled water supply/return distribution piping connected to an existing DEC underground distribution main piping system as indicated for a new distribution service to a proposed new building facility. 3.The construction site is an active building construction project which will be concurrently active during the construction of the DEC utility piping work. The contractor will be required to coordinate his work with the onsite building contractor and subcontractors so as not to interfere with either parties construction activities and schedules. a.Parking must be offsite on metered streets or as otherwise arranged by contractor.