PROVN OF ONE BORE WELL AT 636 EME BN, AND PROVN OF ONE BORE WELL AT 372 COY ASC SUP TYPE A UNDER GE SAUGOR

Amount

Material and labour for trial bore of 200 mm drilling of vertical bore well by rotary cum through direct hammering (DTH) technique in any type of strata including rock / hard stone / boulders etc consisting of following different dia drill bits in sequence from ground level as given below for different bore wells complete.

Note: The following tests and reporting will be carried out by the contractor as approved by GE. (i) Recording the well discharge during driling by a 90 degree V-notch. (ii) Recording the water bearing horizon . (iii) Taking the samples from the bore well cutting for every 3 meter interval and every change in slrate if less than 3 meter. (iv) Preparation of litho logs based on these samples. (v) Drill time log to be prepared and prescribed. (vi) Collection of water sample in water sample bottles for all aquafirs encountered. (vii) Aquafir performance tests at constant discharge with draw down and recovery reading. (viii) Interpretation of data and preparation and of hydro scientific report for designing of submersible pump and artificial recharge studies.

Note:- (a) The range of depth given above for boring with a particular dia of drill bit are not firm and shall be decided on ground by Engr-in-Charge as per site requirements. The change in upper or lower limit of depth of boring from ground level with a particular dia of drill will not amount to a deviation and payment for drilling at any depth shall be made at the rates quoted above for different dias of drill bits. Nothing extra shall be payable on this account. (b) The payment against a particular bore shall be done only after it is completed in all respects and ready to use and has finally been accepted by GE in writing. (c) No payment against any bore shall be admissible if it is abandoned due to default of the contractor.

Supply assembling, jointing, lowering and fixing in the bore hole liner assembly, MS casing pipe of 2 mm wall thickness ( minimum ) of 150 mm Nominal bore Class 'B' ( male / female ) joined and welded with coupler rings throughout the circumference of pipe and internally painted with two coats of anti corrosive paint including all works pertaining to drilling such as opening / dismantling of drilling machine etc. complete all as specified and directed at site.

Ditto all as per serl item No. 2.00 above but slotted pipe of 150 mm dia complete all as specified.

Supply and fixing mild steel housing clamps ( set of two ) 100 mm wide, 10 mm thick flat iron and length not less than 600 mm bent in shape as specified fixed with 4 set of nut, bolt and washers for holding 25 mm dia housing pipe fixed in position complete all as specified and directed.

Supply and fixing mild steel cap of 5.4 mm wall thickness suitable for fixing on housing pipe of 200 mm dia having internal threads with welded iron handle of 20 mm dia MS round fixed in position complete all as specified and directed.

Supply and fixing mild steel 8 mm thickness bail plug 200 mm dia with strong iron hook screwed and welded to the casing pipe complete all as specified and directed at site.

Development of tube well with compressed air by means of air compressor of suitable capacity not less than 200 cum / Hrs and over pumping using suitable capacity pump to make available water sand free, silt free, turbidity and constant flow and testing the yield as per IS 2800 until sand free water is received complete all as specified from minimum duration of 8 hrs continuous complete all as specifierd and directed at site.

Supply sample box of hard wood of internal dimension 900 mm x150 mm depth made from 25 mm thick planks having 100mm square pigeon hold and fully glazed shutter ( 3 mm thick sheet glass ) 900 mm x 400 mm hinged on one side displaying stata samples as found during boring of tube well complete all as specified.

Yield testing as per IS 2800 for the bore well by continuously pumping for 16 hours to determine safe pumping yield complete all as specified & directed at site.

Supply and Lay GI Tubing Medium grade 50 mm dia with fittings complete. Make: Jindal / TATA / Swastik / Surya prakash.

Supply, installed, test & commissining of manufacturer's factory assembled and tested electric driven multistage submersible pump set capable of delivering at 90 mtr to 115 Head, 3 phase, 415 V to match with the capacity of 2.0 LPS discharge suitable for casing pipe 150 mm complete with NRV complete all as specified and directed.

Supply and lowering the GI tubing 50 mm dia heavy grade not less than 3 meter long each pipe with long thread heavy duty socket vertical delivery pipe of submersible pump set all as specified.

Excavation in trenches not exceeding 1.5m wide and not exceeding 1.50m deep for laying of water pipe lines / taking out pipe lines and getting out in Hard / dense soil including forming bottom surface to required level and slope all as specified and directed.

Returning, filling including spreading, levelling, watering and well ramming in layers not exc 25 cm soil all as specified and directed.

Removal of surplus soil to a distance not exceeding 50 m and depositing where directed at a level not exceeding 1.5 m above the starting point complete all as specified at site.

Supply and fixed the submersible Cable flexible copper flat cable of size 6 Sq mm 3 core, 1100 volts grading omplete all as specified at site.

Supply and fix Gun metal Non return valve of size 50 mm dia heavy duty all as specified and directed.

Supply and fix Gun metal Gate Valve of size 50 mm dia with iron wheel head, screwed both ends suitable for Iron pipe complete.

Supply, Installation and testing Starter panel indoor type of sheet thickness 2.0 mm comprising of suitable to housing MCB TPN 63 Amp - 01 No as incommer, DOL starter suitable for Submersible pump set up to 7.5 HP Capacity - 01 No, Complete internal wiring with single phase preventer - 01 No all as specified and directed.

M&L for plain cement concrete type C-2 (1:3:6) using 40 mm graded crushed stone aggregate as in foundation of stay assy / pole etc. including form work complete in all as specified and directed

M&L for plain cement concrete (1:2:4) type B-1 using 20 mm graded crushed stone aggregate for coping / plinth of poles, including necessary form work finished even & smooth without using extra cement all as specified and directed.

Carryout Zolocical Survey for the proposed borewell min three locations to fullfill the requirement from authorised agency all as specified and directed.

Note for all items: All items executed as per specified and directed by Engr-in-charge.

PARAS BROTHERS