tender for labour charges for site clearence and construction of approch road for movement of rig to site , labour charges for excavation of mudpit, settling pit and water channel with re-filling after completion of the drilling works , labour charges for loading and unloading of camp materials and drilling materials including transportation charges , rig movement (to & fro) , rig leveling of site , labour charges for drilling perfect vertical bore hole suitable for lowering of 200 mm dia pvc casing pipe 0 to 30 mtr , labour charges for drilling perfect vertical bore hole suitable for lowering of 200 mm dia pvc casing pipe 30 to 60 mtr , labour charges for drilling perfect vertical bore hole suitable for lowering of 200 mm dia pvc casing pipe 60 to 80 mtr , labour charges for lowering of pvc casing pipe in the finished bore hole , cleaning and development of tw with air compressor for continously in adequate discharge of clean and sand free water , operation of 5 hp water pump , cost of 200 mm dia sch-80 pvc pipe , cost of 200 mm dia sch-80 pvc slotting pipe , cost of 200 mm dia sch-80 pvc cone , cost of 200 mm dia sch-80 pvc well cap , cost of 200 mm dia sch-80 pvc nipple , cost of bentonite powder(drilling mud) , cost of gravel a grade (2 mm to 3mm) , cost of 200 mm dia m.s clamp , e/work in excavation in hard soil in fdn. including rough dressing & levelling the bed not exceeding 0.30 m depth as per specification , earthwork in excavation of foundation in hard soil such as hard stiff clay, stiff black cotton, hard red earth, shales, moorum ordinary gravels etc within 50m.initial lead and 1.5m. initial lift including rough dressing and levelling the bed and depositing the excavated materials within initial lead at nearby the worksite for reuse including breaking clods and stacking rubble for spreading and leveling as the case may be etc complete as per direction of the engineer-in-charge. (excavation by mechanical means 60% & manually 40%) , filling in f&p with sa