RFP for Consultancy Services for Feasibility Study, Preparation of Detailed Project Report and providing pre- construction services for “Construction of Twin Tube Uni- directional Tunnel ( 10. 8 km ) under Ganesh top hill including approaches from D. ch. 60. 400 ( Chandanwadi ) to D. Ch. 82. 700 ( Near Sangam Top ) on Khanabal- Baltal section of NH- 501 in the UT of Jammu & Kashmir on EPC Mode.