PROVISION OF BORE WELL AT ESD KANKINARA UNDER GE NORTH KOLKATA

Amount

Drilling of Trial Bore hole From GL upto 30 Mtr depth below GL in surface soil, brown clay, sand with clay, 215 mm dia, in normal alluvial, sand grained mixed gravel clay strata with direct rotary rig including transportation of of direct rotary rig all as specified and as directed.

All as per Srl item No 1 here-in-before but bxceeding 30 Mtr but upto 60 Mtr depth in sand (gray, fine grained mixed with gravel)

All as per Srl item No 1 here-in-before exceeding 60 Mtr but upto 95 Mtr depth sand ( brown, gray fine medium grained)

All as per Srl item No 1 here-in-before exceeding 95 Mtr but upto 134 Mtr depth sand ( gray coarse grained)

All as per Srl item No 1 here-in-before exceeding 134 Mtr but upto 160 Mtr depth sand (gray fine grained) mixed with clay

All as per Srl item No 1 here-in-before exceeding 160 Mtr but upto 200 Mtr depth Sand (brown, fine, grained gray medium grained) with clay and gravel. NOTES : (i) Depending upon the availability of suitable water bearing strata, if drilling beyond 200 Mtr depth below ground level is required, drilling will be carried out after written order is issued by GE. (ii) The rate for drilling beyond 200 Mtr depth will be admissible at the rate of this Item.

Carrying out Electrical Logging of the drilled bore hole upto the depth of 140 to 180 Mtr below GL and submission of the Log Report in triplicate, all as specified and as directed.

Carrying out Electrical Logging of the drilled bore hole above the depth of 180 Mtr below GL and submission of the Log Report in triplicate, all as specified and as directed.

Development of Trial Bore into Tube-Well of size 300 mm x 200 mm in by suitable drill size from GL upto 30 Mtr depth below GL in surface soil, brown clay, sand with clay alluvial strata considering minimum 2mm to 6 mm thick pea-gravel shrouding around the casing pipes and strainers for the following depths all as specified and as directed :

All as per Srl item No 9 here-in-before exceeding 30 Mtr but upto 60 Mtr depth in sand (gray, fine grained mixed with gravel)

All as per Srl item No 9 here-in-before exceeding 60 Mtr but upto 95 Mtr depth sand ( brown, gray fine medium grained)

All as per Srl item No 9 here-in-before exceeding 95 Mtr but upto 134 Mtr depth sand ( gray course grained)

All as per Srl item No 9 here-in-before exceeding 134 Mtr but upto 160 Mtr depth sand (gray fine grained) mixed with clay

All as per Srl item No 9 here-in-before exceeding 160 Mtr but upto 200 Mtr depth sand (brown, fine, grained gray medium grained)with clay and gravel. NOTES :- (i) The rate for development of trial bore beyond 200 Mtr depth, if ordered by GE depending upon the CGWB recommendation or the basis of the Electrical Logging Report, will be admissible at the rate of this Item. (ii) This note is applicable for Srl item No 9 to 14 verticality Test of the Tube-Well Structure shall be carried out by the contractor and the cost is deemed to be included in the item rate.

Supply and fixing Bail plug, made out of suitable size of ERW MS pipe, for 150 mm dia with 8 mm wall thickness,

Supply and lowering vertically and fixing in position ERW MS Casing Pipe of wall thickness 7mm, 200 mm bore of suitable lengths with bevelled ends suitable for and including welded butt joints with electric arc welding, conforming to IS : 3589 / 1991 all as specfied and as directed. Make : TATA / JINDAL / GAJANAN.

All as per Item No. 16 above, but 150 mm bore. Make : TATA / JINDAL / GAJANAN.

Supplying, lowering, assembling and fixing in position 150 mm dia fiberglass strainer 6 mm thick and 1 mm soft size including joint MS ERW well pipe 150 mm dia through MS adopter and sockets to nearest socket at levels by welding as required and including special sockets for connecting to MS pipe all as specified in IS 8110 complete all as specified and directed. Make: TATA / SAIL / GAJANAN / SURYA ROSHNI LTD / JINDAL STEEL / PRAKASH / M/s BHUSHAN POWER & STEEL LTD / VMT FIBRE GLASS Note:- Slots shall not be less than 15% of total surface of slotted pipe and slot dia shall not exceed 1.00 mm dia.

Supply and fixing vertically in position with the MS ERW casing pipes by means of electric arc welding, MS Reducing Socket, 200 mm x 150 mm, heavy duty, of 8 mm wall thickness all as specified and directed.

M & L for washed pea-gravel (sub-rounded to rounded) of grading 2 mm to 6 mm for packing / shrouding around the Tube-Well Structure.

Supply and lowering in the annular space between the bore and well structure, Pipe galvanized iron, 50 mm bore medium grade with fittings and fixed through the PCC Sanitary Sealing block for insertion of pea-gravels. Make : TATA / BANSAL / JINDAL

M & L for Sanitary Sealing with PCC (1 : 2 : 4) Type B-1, using 20 mm graded aggregate around the well casing pipe in the annular space between the bore and tube-well structure.

Development of tube well by means of 265 cfm air compressor for a peroid of 72 hrs until sand free clear portable water is obtained by busing diesel engine driven turbine pump is getting max yield and discharged measured by orifice V notch including submitting of strata chart , yield test result from Geo hydrologist and water test of chemical Such as odour, PH value, iron, arsenic etc and bacteriological report obtained form National Test House all as per IS:11189 & IS:10500 complete all as specified and directed.

Supply and fixing well cap for 200 mm bore ERW 8 mm thick casing pipe, made out of 6 mm thick MS sheet with locking arrangement.

Supply and fixing a pair of MS Clamp, made out of 150 mm x 8 mm thick MS Flat iron, 750 mm long, with drilled holes 25 mm dia incl MS high tensile bolts, nuts & washers complete all as specified and directed.

M & L for joints with Rubber or Fibre board gasket for flanged specials & sluice valves, 100 mm bore.complete all as specified and as directed.

Supply, fixing, lowering into the Tube-Well, test and commissioning ERW Steel Column Pipe, medium grade, 4.50 mm (7 SWG) wall thickness, 100 mm bore with drilled double flange ends having two cable slots on each flange complete, including SS bolts, nuts, washers & rubber insertion gaskets. Make : TATA / BANSAL / GAJANAN.

S & F rest clamp for 100 mm for holding the pipes including nuts and bolts, complete all as specified and as dirrected.

S & F steel wire rope of size 10 mm for holding the pump.complete all as specified and as directed. Make UHSA and Equivalent

S&F cast iron sluice valve 80mm bore dia flanged both ends conforming to IS-14846/2000, class PN-1.6 with stainless spindle, iron hand wheel including all necessary fixing and jointing arrangement such as MS nuts, bolts, washers & gasket, etc and testing complete all as specified and as directed. Make : Kalpana/ Kirloskar/Leader/RMCO/Upadhyay/Zoloto.

S&F cast iron sluice valve 100mm bore dia flanged both ends conforming to IS-14846/2000, class PN-1.6 with stainless steel spindle, iron hand wheel including all necessary fixing and jointing arrangement such as MS nuts, bolts, washers & gasket, etc and testing complete all as specified and as directed. Make : Kalpana/ Kirloskar/Leader/RMCO/Upadhyay/Zoloto.

S&F Cast Iron Non-Return Valve 100mm bore dia with flanged ends, PN-1.6, ISI marked, conforming to IS : 5312, Part-I, including all necessary fixing and jointing arrangement such as MS nuts, bolts,washers & gasket etc and testing complete all as specified and as directed. Make : Upadhaya/Kalpana/Venus/zoloto

Supply and laying cable XLPE insulated screened Meter PVC bedded, galvanized steel strip for wired armoured, electric power cables (heavy duty) 1100 Volts, Grade with stranded aluminium conductor of size 35 Sq mm 3.50 Core. Make : Polycab/Havells/MESCAB

Supply, fixing, testing of Submersible pump set of discharge capacity 36 CUM/Hr @ 65 Mtr Head coupled with motor of capacity 20.00 HP/9.3 KW, 3 phase 415 Volt complete with connections and all fixing arrangements with column pipe of bore complete etc and all as specified and directed by Engr-in-Charge. Make: KSB / KIRLOSKAR / L&T.

Supply and install outdoor type Feeder Pillar Box, dust and vermin proof, of size 800 mm x 500 mm x 800 mm (L X B X H) floor mounted, made out of 3 mm thick CRCA sheet & MS angle section with hinged side opening doors with locking arrangement, powder coat painted,comprising of the following accessories :-

M & L earthing complete with GI earth plate electrode 600mmx600mmx6mm thick buried in ground vertically to a depth not less than 2.25 mtrs below ground level with top edge of earth plate not less than 1.5 mtrs below ground level connected with GI earth strip of size 32mmx6mm thick up to a length of 7.5 mtr long by means of GI bolts, nuts,washers etc and protected by GI pipe light grade 40mm bore and 20 mm dia GI tubing light grade with funnel for watering, connecting to test point, all as shown in electrical plate No.3 of SSR Part I incl necessary earth work and excavation in any type of soil, PCC(1:3:6) type C1 earth chamber with RCC cover slab 50 mm thick,with RCC (1:2:4) type B1 with 8 mm CTD bars re -inforcement both ways at 140 mm C/C with suitable Mild steel handle ,watering pipe 20 mm dia light grade with funnel , charcoal , salt ,and testing on completion complete all as specified and directed by Engr -in-charge.

S&F Pressure gauge 80mm dia with ball valve of pressure 25 Kg/Sqcm.complete all as specified and as directed.

S&F DI pipes of size 100mm with spigot and socket ends,K9, confirming to IS8329-/2000 centrifugally cast, suitable for tyton rubber joint in any length, laid in trenches on pillars/walls including testing complete all as specified & directed. Note: Joints and fittings shall be measured and paid separately. Make:Electrosteel casting /jindal/Sri pipes/Neco Centri/BIC/AIC/Tata matlicks/Tata kabuto/ M/s Kiswok Industries Pvt Ltd.

S&F DI pipes of size 150mm with spigot and socket ends,K9, confirming to IS8329-/2000 centrifugally cast, suitable for tyton rubber joint in any length, laid in trenches on pillars/walls including testing complete all as specified & directed. Note: Joints and fittings shall be measured and paid separately. Make:Electrosteel casting /jindal/Sri pipes/Neco Centri/BIC/AIC/Tata matlicks/Tata kabuto/ M/s Kiswok Industries Pvt Ltd.

M & L for provision of a tripod stand over the borewell for lifting/lowering of submersible pumpset & column pipes & made from 100 mm bore heavy grade GI tubing with flanged legs embedded in PCC foundation with (1:3:6) mass concrete, each leg at 8 mtr distance from borewell & the vertex/peak of the stand should be at a height of 5 mtr above the edge of casing pipe & fastened together with 16 mm steel bar/ long bolts including necessary drilling,bending turning,welding work including painting to rustable surface including provn of one heavy duty chain pulley 5 ton capacity with protective hood over the tripod stand & all as directed by Engr-in-charge.

M & L for construction of brick masonry valve pit chamber including necessary excavation and earth work complete with (25X25X6)mm thick angle iron frame and MS cover alongwith locking arrangements (3mm thick with staffen and two handles), making of PCC work (1:3:6 ) type C-1 foundation for size (1200x1200x900) mm internal dimension and brick work in CM 1:4 as directed by Engr-in-charge.

Supply installion, ,testing and commisioning of high pressure single head pressure adjustable gear motor dosing pump. Model no. RPQ 40 HD cap. 02 USGPD to 40 USGPD at 100 psig adjustable high pressure 230 volt ,50 HZ including accessories like suction/discharge tubing, footvalve, strainer,injection check valve suitable to dose Aquafit/Chlorotech-90 chlorine granular. Make RMCO or equivalent make approved by E in Cs nos -01 , including FRP solution preparation cum setting tank of capacity 100 Ltrs with lid, port hole,inlet/outlet/drain connection,level gauge .including white pipe/tubing of 50 mtr etc and fitted with speed reducing motor and SS-316 agitator. Model No. CDS-100 Nos -01. Make : RMCO or equivalent make approved by E-in-C 's

Excavating in trenches, n exc 1.5 m wide or n exc 10 sq m on plan and n exc 1.5 m in depth for foundation etc and getting out in loose soil for taking out pipe line etc complete all as specified and as directed.

All as per Srl item No 34 here-in-before but in hard /dense soil.complete all as specified and as directed.

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

Removing excavated materials/surplus soil not exceeding 50m and depositing where directed at a level not exceeding 1.5m above the starting point complete all as specified.

Supply and spread, dry clean river sand in trenches for cable cushioning, 15 cm bottom of the cable and 8 cm on top of the cable and get the thick layer of 18 cm aftrr ramming and all as specified and directed. Note :- Punned thickness shall be measured and paid.

Supply and laying of sub class B bricks of standard size as cable protection cover all as specified and directed

Supply, making joint , test and connect PVC insulated and PVC sheathed flat submersible cable of multistranded copper conductors of size 6 sq mm, 3-core, 1100 volt grade. Make : Finolex / Plaza/Harsh.

S&F cast iron special such as bend, tee, tapper, Y junction, collar, tail pieces or any other fittings with spigot socket end flanged spigot ends or flanged socket ends up to 150mm bore complete all as specified & directed.

M & L for rubber tyton joints for DI pipes 80 mm and 100 mm bore pipes all as directed by Engr-in-charge.

All as per item No 52.00 here-in-above but for DI pipes 150 mm bore pipes all as directed by Engr-in-charge.

M & L for sample box made out of wood for sample received from different strata during digging at interval of 5 mtrs complete as specified.

S&F DI pipes of size 80mm with spigot and socket ends,K9, confirming to IS:8329-/2000 centrifugally cast, suitable for tyton rubber joint in any length, laid in trenches on pillars/walls including testing complete all as specified & directed. Note: Joints and fittings shall be measured and paid separately. Make:Electrosteel casting /jindal/Sri pipes/Neco Centri/BIC/AIC/Tata matlicks/Tata kabuto/ M/s Kiswok Industries Pvt Ltd.

MASTER BUILDERS