Additional work for sinking of 02 ( two ) nos. Rig bored 300 mm x 200 mm dia. & 300 mtr. deep Tube well to achieve 66 mtr. housing pipe by Rotary Method for SITAKUNDU [ Zone- II ] PWSS of Baruipur Block for Augmentaion of Surface Water Based W/ S Scheme in the Arsenic Affected Areas of South 24 Pgs district under South 24- Parganas W/ S Division- I, P. H. E. Dte. [ SM/ 11646 ]