Construction of 70 nos. of Piezometers with Platform and Other Civil Works in Haryana under NHP for groundwater monitoring

Amount

Supply of Pipe & Drilling construction and development of Piezometer

Shifting of Rig & well construction material to site including site preparation

Drilling of Pilot hole (Max. 254mm dia. size) up to desired depth (tentative depth as per attached Annexure I in the Bid document) including collecting of samples from different strata, preparing and submitting strata chart(lithologs), drill time logs etc.

Electrical well logging using 406mm and 1626mm (N16" and N64") SP resistivity probe, preparation of composite log(resistivity, SP, parameters and lithological log) etc.

Drilling of 115 mm inner dia bore in all types of rocks throughout depth of the bore hole by DTH Rig or any other suitable rig, including fixing and setting of 2meter M.S. plane pipe of Size 100mm dia. & Thickness 5.0mm

a) Supply of ERW M.S. plane end casing pipe of size 100mm NB Thickness 5.0mm, confirming to ISI marked as per IS: 4270-2001 with latest amendments

b) Supply of ERW M.S. slotted pipe of size 100mm NB Thickness 5.0mm, slot size 1.2mm × 76 mm size, zigzag slotting, open area 16%, pipe material should be confirming to ISI marked as per IS: 4270-2001 with latest amendments. Slotted pipe should be free from any burr or cutting from inside.

Well assembly preparation of 100mm dia plane and slotted pipe and assembly lowering by proper welding in alluvium formation with bail plug.

Supply of Gravel and packing in annular space of well, gravel size 2.5mm-4mm duly washed, and free of sand and any calcareous material confirming to IS:4097-1967 with latest amendments

Supply and fixing of M.S. Clamp by suitable welding,clamp size made of 8mm thick and 80mm wide MS plate, each side arm length 0.60m duly fastened with double nut bolts on each side

Development by Air Compressor to make discharge water free of sand and clay etc. (3 hrs each well)

Supply of M.S cap made of 6mm thick plate and fixing by welding on 100 mm dia top end

Construction of concrete platform (1:2:4) made of size .80m×.80m×.80m (.30m bgl and .50 agl)

Supply and installation of protection box of size 50cmX50cm made of 2.5mm GI sheet along with heavy duty lock (7 lever hardened) and three keys for each lock

Supply and installation of Display board

Collection of 2 nos. water samples of 1 litre for each piezometer well site taken at the end of development by air compressor for further chemical analysis. The sample should be collected in the Laboratory approved sample bottles (Cylindrical –semi-transparent with measures), preparation of report(BDR) etc.

Super Engineers India Pvt Ltd