PROVISION OF MICRO RECHARGING BOREWELLS AND INTERCONNECTION OF WALLS AT AJMER MIL STATION AND SPL REPAIR TO FLAG POST IN ATHELETIC GROUND OF RASHTRIYA MILITARY SCHOOL AJMER

Survery & Identification of water resource point from ICGAS ground /compound by tapping ground water with a suitable instrument through authorised representative from CGGWD (Central /State Govt Ground water Department) and submission of report complete all as specified and directed.

Drilling of trial bore hole by hydraulic rotary drilling (Reverse Circulation Method) according to IS : 2800-1991 (Part-I) as amended upto date and modified to extent of specified attached with this schedule of items of work in all kinds of soils & boulders upto 250 mm dia the cost of all consumable stores, fuel oil, soil stabillising material, arrangement & transportation of rig and other accessories of site of proposed bore and back and disposal of spoil from the site, for a depth upto 200 metres from ground level complete all as specified and directed. NOTE : The quoted rate shall be deemed to be inclusive of the cost of drilling rig pumps, fittings,tools including mobilisation etc which shall be provided by the contractor under his own arrangement for execution of the work.)

Supply & installing sample box for displaying samples of strata made out of teak wood plants 25mm thick board, duly french polished out side, size of sample box 1000mm x 1000mm, required nos of samples bins 100mm x 100mm x 100mm sizes, provided with front openable glazed shutter, 25mm thick duly fitted with 2 Nos 75mm aluminium hinges and 75mm aluminium anodised hasp and staples for locking arrangement complete all as specified and directed.

Development of tube well with according to Clause 9.3 of IS-2800-1991 (Part-I) as amended upto date and specification attached with air compressor of capacity 250 PSI/1000 CUM till sand/mud free water of potable quality is obtained and to achive minimum discharging capacity of 25000 LPH complete all as specified and directed. (Note - Compressor with accessories and fuel, pipes etc shall be arranged by the contractor).

Resistivity variation studies in bore hole drilled by electric logging of pilot bores by expert of Geology division to know the potential and temperature probes of drinking water by approved agency duly collaborated with strata chart/bore log complete all as specified and directed.

Yield testing for the tube well by turbine pump and motor (disel driven) for minimum discharging capacity of 25000 LPH for at least continuous 8 hours uninterrupted run per day for three continuous days complete all as specified and directed. (Note : 'V' Notch and other equipment including pump set shall be arranged by the contractor at his own cost

Supplying, assembling, jointing and lowering steel casing pipe for water wells, plain ended, 250 mm nominal bore of pipe, 5.4 mm wall thickness, ERW (Electric Resistance Welded) type, Fe 450 grade of steel, externally coated with bituminous solution conforming to IS-4270-2001 and fixing in position in different depth as directed, butt welded complete all as specified and directed.

Supplying, installing, testing and commissioning chemical dosing system comprising plunger type chemical dosing pump having discharge pressure of 10 Kg/〖cm〗^2 and flow rate of 25 Litres/hour with accuracy of ±1%, made of PVC or PP materials coupled with three phase electric motor of capacity 0.5 HP, 1440 rpm, 415 V, including preparation cum storage tank with lib, level gauge water of capacity 150 litres, made of FRP including agitator with stainless steel sweep blade duly FRP coated coupled with single motor using combined gear & motor assembly, designed to prevents back flow and siphoning, self-priming and continuous dosing, adjustable output from 5% to 100% in 2.5% increments including mounting complete unit on structure made of hot rolled low tensile structural steel of grade E165 as per IS 15911: 2010 and painted with anti-corrosive paint complete all as specified and directed.

Supply and filling Pea gravel of size 3 to 6 mm for parking around the housing/assembly, slotted pipe of the bore well, complete all as specified and directed. (Note : Pea gravel shall be paid as per stack measurement carried out on site)

Disinfection of bore well as per IS 2800: 2019 using 200 milligrams of powdered chlorine compound per litre of water present in the well and left in the well for at least 8-12 hours to ensure elimination of any bacteria complete all as specified and directed.