Tenders Are Invited For Procurement Of Drilling And Installation Of A 150 Meters Borehole In Chemedi, Renk C ... in South Sudan

Work Detail

Tenders are invited for Procurement of Drilling and Installation of a 150 Meters Borehole in Chemedi, Renk County, with Hand Pump. Geo physical survey site 1.00 2 Mobilization of drilling equipment lump 1.00 3 Borehole drilling using 8" diameter Drilling bit with rotary machine from ground level to 100m depth maximum. 4 Borehole drilling using 6.5" diameter Drilling bit with rotary machine from ground level to 150m depth maximum. Meter 150.00 5 Supply and Install 3m long x 125mm (4") diameter class 10 PVC plain casing casings and screen casing. PCs 45.00 6 Installation of PVC end cap PCs 1.00 7 Supply and pack borehole with 2-4mm washed rounded gravel pack Casting sanitary seal with concrete on top of the gravel surface between the casing and the natural ground surround (for all loose formation) with all required activities. 50 Kg bags 10.00 9 Developing of borehole by airlifting with a compressor of 10bar for a minimum of 3 hours until a stabilized satisfactory yield is reached and the turbidity is less than 5 NTU No. of hrs 5.00 10 Carryout Pumping test, to check the yield of the borehole (constant rate testing and the step testing 4 steps x2 hours each). Hrs 24.00 11 Clean and disinfect the borehole with hypochlorite calcium solution 50mg/litre with all required related activities. KG 3.50 12 Supply and install India MarkII hand pump set 1.00 13 Construct Concrete platform Well apron after drilling with water discharging trough sloping to drain into soak pit a way at 6m from the Borehole. unit 1.00 14 At end of borehole trough/drainage, Construct Soak pit 1.5m diameter and 2m deep and fill with aggregate from bottom to top-rate to include excavation of pit unit 1.00 15 Completion of preliminary borehole report submitted within one week of completion of borehole, including, population, GPS coordinates, casing details, filter pack details, constant rate testing procedures and results, recovery testing results, yield, draw-down, borehole lithology, depth, diameter, SWL, DWL, stakeholders signatures, during and after drilling photographs. Lump 1.00 Tender Link : https://comms.southsudanngoforum.org/c/tenders

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