Details: drilling work: drilling of bore hole of suitable diameter upto required depth by water jet system through any type of soil including hire and labour charges for boring pipes, scaffolding, other tools and plants etc. and taking out the same complete and other incidental works in this connection. the bore hole should have minimum 65 mm gap in between outside of the tube well pipe and the bore. for lowering 150 mm dia p.v.c. pipe labour charges for lowering of pipe, strainers, blank pipe etc. and fitting, fixing the same including cutting, threading where necessary complete including bucket washing and other incidental works in this connection. ii) 150 mm dia. blank/ribbed/housing pipe. supply of gravel for use as pack in the tube well of 2mm to 4mm size (as per is:4097) and gravel treatment of tubewell including screening washing, cleaning etc. of the gravels at the site all complete as per direction of engineer-in-charge . (iii)for site at any district of west bengal upto 180 km dis
Sector: Water Resource Department