Sinking of 250mm x 150mm dia. 360 mtr. deep Tubewell by Direct Rotary Rig Method using P. V. C pipe and pre- packed Resin Bonded Gravel Filter of the Augmentation Ground Water Based at Chatrakhali, Zone- I, II & III W/ S Scheme, Block- Canning- I under Canning Sub Division of Alipore Division, PHE Dte., TW No. 1 replacement Tubewell