Elevar performed MEP Engineering services for the Hebron Branch of the Boone County Library System. The Hebron Branch Library is a new, single-story building consisting of mostly Library space, some offices and storage. Plumbing design was performed for multiple restrooms for the general public, staff, and family areas. Certain parts of the library were built on a depressed slab to permit the restrooms and other areas to be built on grade. The HVAC design was comprised of multiple systems. The meeting room and ancillary areas were supplied by a variable volume, rooftop unit, with an energy wheel for heat reclaim, gas heat and with a duct work distribution system to variable air volume terminal units, with electric reheat coils for zone control. The Library, Children’s Area and the Collections Room also used a variable volume, rooftop unit, with an energy wheel for heat reclaim, gas heat and with a duct work distribution system, to below a raised floor that was installed above a depressed slab. Each zone associated with the below floor displacement system had a fan coil unit that was connected to variable refrigerant flow (VRF) system. A VRF system was used for the offices, so that that system could operate singularly. LED site lighting and dimmable interior LED lighting was included in the project.