Hire the services for Carrying out detailed topographical survey of the OIL township at Guwahati using Total Station and DGPS including preparation of contour map and updated digitized map in AutoCAD format pursuing the available digitized map of the township (to be provided by OIL) with pinpointing all existing properties and services, boundary wall, roads, trees, drains, water & fire hydrant line and power line etc. establishing reduced level, w.r.t. SOI benchmark, of drains, roads buildin
