15th Finance 2022-23 2nd Installment Tied and Untied Grand

Drilling of Borewells anywhere in Tamilnadu including transportation from one place to another with in Tamilnadu in alluvial soil sedimentary strata of clay and sand stone shale pebbles boulders etc. By first taking a pilot bore of 150 mm/200mm dia and then enlarging to required dia direct or reverse rotary mud circulation method using rotary rigs fuel, labour and drilling bentonite and water required for drilling at site. Site will be shown by the TWAD Board officers including construction of mud pit. As per TWAD Schedule of Rates SL NO.12 A - Upto 60 mt. Depth ending below ground level Sl.No 12 A - i

60 mt.to 90 m Depth ending below ground level Sl.No 12 A - i

90 mt.to 120 m Depth ending below ground level Sl.No 12 A - i

120 mt.to 150 m Depth ending below ground level Sl.No 12 A - i

Reaming 140/150 mm dia pilot bore to 300mm dia bore as directed by the TWAD Board Officer As per TWAD Schedule of Rates SL.NO 12b - Upto 60 mt. Depth ending below ground level Sl.No 12 b - i

60 mt.to 90 m Depth ending below ground level Sl.No 12 A - i

90 mt.to 120 m Depth ending below ground level Sl.No 12 A - i

120 mt.to 150 m Depth ending below ground level Sl.No 12 A - i

Supply of the following casing pipes of ISI approved quality with wall thickness not less than 7.5mm to 8.5mm with PVC couplers and cement Paste etc. Complete and including packing the annular space with pebbles quality and size of pebbles and the PVC pipe should be approved by the departmental officer. As per TWAD Schedule of Rates SL.NO 1.2 AS PER IS 12818/1992 - 200mm dia OD PVC Plain casing Pipe (CM) Sl.No. 1.2 - 1

200mm dia OD PVC slot casing Pipe (RS) Sl.No. 1.2 - 3

200mm dia OD PVC end cap Sl.No 1.5 - 11

Labour Charges for inserting PVC Casing pipes assembly (with slots or without slots) in the drilled hole including jointing the pipes with PVC Couplers with Cement paste etc., complete supply and packing the annular space with pebbles of size and quality as approved by the executive engineers TWAD Board SL.NO.12Ei

Charges for developing the borewell with air compressor of 600 cfm capacity (Minimum 8 Hours) including transportation labour and fuel charges for compressor as directed by TWAD Board officers and conducting yield test by 'V' notch method. TWAD Board SL.NO 13B

supply and delivery of 10 HP three phase Submersible pumpset of duty condition 75lpmx250m as per IS 8034 without panel board etc complete as per standard specification.TWAD Board SL.NO.3.1 - 3

Supply of three phase Pannel board suitable for 15HP with two level guard and auto start etc complete as per standard specification. TWAD Board SL.No. 11.1 - 2

V MUTHUKUMAR