GM2, contracted by Burns & McDonnell, provided ground survey support to assist in replacement/upgrading of PSEG-LI facilities from the East Garden City Substation and nearby facilities located on the US Post Office Facility, to the East. Detailed topographic survey was created to act as the base mapping in order to produce the design/construction documents. Of note, there were two possible routes for the new infrastructure line; the route selected for survey followed an existing Long Island Railroad (LIRR) right-of-way. A significant challenge with this route was the substantial construction and railroad debris scattered throughout the area. The debris was difficult to work around and troublesome in accurately locating and developing the most advantageous path for work.
Upon completion of the original ground survey phase, GM2 was brought back to locate and map various structures at the East Garden City Substation. This scope of work included mapping the extensive underground utilities running through the facility.