Sinking of One No. 100mmX50mm. Dia deep tubewell with a submersible pump and motor in the premises of Aiho CCC under Gazolel Division, in the district of Malda

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 & 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 tube well pipe and the bore. a) For depth upto 150m for 50mm dia tube well with top enlargement of 100mm dia. i) 50mm dia boring etc. PWD Schedule Item no-01(d/i), Pg-49

ii) 100mm dia boring etc. top enlargement. PWD Schedule Item no-01(d/ii), Pg-49

Supply of PVC pipes & fittings Schedule 80(medium duty) conforming to ASTMD - 1785 & threaded to match with GI pipes as per IS:1239 (PART - I) PVC pipes i) 50mm dia PWD Schedule Item no-19(III), Pg-13

ii) 100mm dia PWD Schedule Item no-19(III), Pg-14

Supplying PVC strainer of approved make with adapter conforming to I.S.12818 specifications. (50 mm dia). PWD Schedule Item no-06, Pg-52

Supplying fitting & fixing steel cutter piece up to 450mm long with socket 50mm dia. PWD Schedule Item no-09, Pg-53

Collecting sample of water for bacteriological and chemical test from any depth at any time during execution at work including hire and labour charges for tools and plants and sterilizing the equipment, paying all charges and fees, testing etc. complete in all respect as per direction. PWD Schedule Item no-23, Pg-55

Supplying fitting & fixing 300mm housing clamp of approved quality. PWD Schedule Item no-27, Pg-56

Providing 200 mm centre guide. i) With Clamp PWD Schedule Item no-28, Pg-56

Washing & 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 complete in all respect. PWD Schedule Item no-20, Pg-55