As part of our design work for the New Jersey Department of Environmental Protection, EI Associates provided the New Jersey Department of Property Management and Construction (NJDPMC) with the design for a rooftop photovoltaic, PV, power system to reduce utility costs for the existing building. Structural roof loading calculations were prepared by our firm as part of the design to determine the ability of the existing roof to handle photovoltaic panels and related equipment. The project included the replacement of the existing rooftop cooling tower including ancillary piping, two pumps, motor drives and controls, as well as the replacement of over 800 heat pumps throughout the building. In addition EI Associates designed the replacement of the existing ballasted EPDM roof system with a new non-ballasted, reflective membrane roof system including flashings, replacement of damaged copings, drain bodies, strainers and expansion joints.