AS PER BOQ

Setting up of drilling site by way of shifting of requisite machinery and allied material after making proper approaches as per requirement at site.

Boring/drilling 200mm dia. Borewell, upto 90 meter below ground level or till sufficient aquifer Zone/discharge is encountered, by using ODEX Method of drilling and simultaneously driving of 200mm dia. ERW casing pipe after providing fixing of casing drive shoe with first 200mm dia. ERW casing pipe, complete, as per IS: 2800 (part 1), including collecting samples from different strata, preparing and submitting strata chart/bore log, including hire and running charges of all equipment tools plants and machineries required for the job, all complete as per direction of Engineer-in-charge. (ERW casing pipe shall be paid separately)

Supplying, assembly (including welding) lowering and fixing in vertical position in bore well ERW (Electric Resistance Welded) 200 mm dia. with 7.1 mm thickness FE 410 bevelled ended M.S. casing pipe, conforming to IS: 4270 (for Bore wells) of reputed & approved make, including painted with inside & outside surface with two coats of anti-corrosive paint of approved brand including handling, loading, unloading & transportation of M.S. Casing pipe upto location of Bore well, as per direction of Engineer-in-charge.

Development to bore well in accordance with IS: 2800 (part 1) and IS: 11189 to establish maximum rate of usable water yield with required capacity air compressor, running the compressor for minimum 6 hrs and maximum upto till well is fully developed free from sand and other impurities. Then measuring of maximum yield of well by “V” notch method or any other approved method, measuring static level & draw down etc. by step draw down method including disinfection of bore well. Complete job including hire charges of air compressor, tools with accessories along with labour charges as per direction of Engineer-in-charge. Stabilization and testing of bore well by way of drawing water (Pumping) using submersible pump set till the clear potable drinking water is achieved during yield test. Then stabilization of the bore well by fixing safe discharge of well and measurement thereof using approved method. Then collecting water samples and getting tested in approved laboratory. The job includes the hire charges of pumping machinery along with labour and other tools and tackles as per direction of Engineer-in charge, Complete job.