Preparation & submission of Engineering Geological map of Arun-4 HEP covering components (a) concrete weir, Intake, reservoir and Desilting Chamber near Gola village, (b) Head Race Tunnel and (c) Surge Shaft, Pressure Shafts, Underground Power House and TRT near Uwagaon Village with minimum requisite, qualified & experienced manpower and including all expenses as per scope of work at Annexure-B.