bids are invited for custom bid for services - topgraphical survey consultancy services for connection of existing sewer network with proposed new sewer line - detailed topographical survey incl survey of existing sewerage system, soakage pits, manholes, ground levels, invert level, coordinates and preparation of survey drawings and autocad plan and to also provide design of proposed sewer line to incl. alignment planning, invert levels, manholes locations, connection details with existing sewerage system, and submission of design data and drawing in auto cad and pdf format. note: reports and drawings to be forwarded in both soft and hard copy.(04 copies)