sinking 4 nos. of tubewell (i) near krishnarayanpur altap house gp-basuldanga (ii) near ajmina house krishnarayanpur, gp-basuldanga (iii)near asmaul laskar sekhpara at joktabala,gp-basuldanga (iv) near chanda jamadar para gp-basuldanga under d.harbour-i ps; 1 sinking 4 nos of tubewell 2 labour for boring tube well of required dia. by water jet system through any type of soil strata including hire and labour charges for boring pipes, scaffolding, tools and plants as necessary and taking out them and lowering pipes, strainers, blind pipe etc. and fitting and fixing the same complete including bucket washing and other incidental works in the connection. the tube well should have a minimum 50 mm gap in between the outside of the tubewell pipe and the bore. 3 (d) for depth upto 150 metre for 40 mm dia. tube well with top enlargement of 100 mm dia. 4 (ii) 100 mm dia. boring etc. top enlargement 5 c) for depth upto 150 metre for 40 mm dia. tube well with top enlargement of100 mm dia.(i) 40 mm dia boring etc 6 (b) for depth more than 150 metre. (i) 40 mm dia. boring etc. beyond 150 metre 7 supplying high density polythene strainer of approved make with adapter conforming to i.s. specifications(i) 40 mm dia. 8 supplying, fitting and fixing steel cutter piece upto 450 mm long with sockets. (i) 40 mm dia. 9 supplying, fitting and fixing plug of approved make conforming to i.s. specifications.(i) 40 mm 10 supply of pvc pipes & fittings schedule 80 (medium duty) conforming to astmd - 1785 and threaded to match with gi pipes as per is : 1239 (part - i).(a) pvc pipesi)100 mm 11 (ii) 40 mm dia 12 packing the annular space between the outside of the tube well pipes & strainers and the bore with pea size washed gravel of approved quality having size from 2 mm to 5 mm or the size approved by the engineer-incharge including cost of all materials labour and equipment complete. 13 construction of masonry platform of size 1.25m x1.25 m with ,75 mm thick cement concrete (1:2:4) over a layer of single brick flat soling including 15 mm thick cement plaster (6:1) with neat cement finish to inside & outside as per direction of eic 14 spill water masonry surface drain 15 cm wide ,15 cm deep having 12.5 brick work in cement morter (4:1) on 75 mm brick pcc (1:2:4) over a layer of brick flat soling including 15 mm thick cement morter (6:1) with neat cement finish to inside and outside as per direction of eic 15 collecting sample of water for bacteriological and chemical test from any depth at any time during execution of work including hire and labour charges for tools and plants and sterilising the equipments, paying all charges and fees, testing etc. complete in all respect as per direction. 16 washing and developing tube well with air compressor pump and engine for 8 (eight) hours continuous pumping per day with necessary arrangements for testing the yield in gallons per hour with v notch including hire and labour charges for all tools and plants and scaffolding as required 17 supplying fitting & fixing india mark iihand pump set 18 supplying and fittingof reducing socket (mm x mm)i) 100 x 40 19 construction of soak pit 1000 mm outer dia 125 mm thick brick work(1:4 cement mortar) depth 1200 mm from ground level and top cover 75 mm thick slab with reinforcement . and insidefilling with brick batsupto 600 mm height from bottom level.complete andfilling medium sand 300 mm above bats completein all repect as per instruction of engineer-in-charge 20 supplying ,fitting & fixing of name plate and photograps