PROVIDING AND INSTALLING 1...

Providing clay seal of thickness 4.0mm or above consisting of balls of local lay or bentonite mud to be placed in the annular space around the assembly the clay seal should be provided at a level of minimum 25.00m above the top most screens depending onthe logging result.

Inspection of tubewell with Geo Scanning borehole camera with display and data recorder to find out the fault and submission of suggestions regarding rectification of same to obtain the sand free water at site Including Transportation, Lodging, and Boarding. Detailed Analysis with Videography and Submission of Report, Video and also verifying the depth/ position of assembly complete in all respect to the satisfaction of Engineer-in-charge.

Resistivity survey with deep penetration, generator operated, D.C. resistivity meter to know the type of sub surface strata at different depths. Quantity of water likely to be available and depth of the tubewell to be installed to obtain fresh water in required quantity including transportation of equipments and manpower, submission of hard copy of resistivity survey with relevant technical data complete in all respect to the satisfaction of Engineer-in-charge.

Supplying and jointing 4 core Service Cable 25 sq mm of approved make with bare bunched aluminium conductor insulator and sheathed with PVC etc. With voltage grade 1100 volts marked with IS 694:1990 including cost of jointing, material, carriage, loading and unloading etc. complete in all respect to the satisfaction of Engineer-in-charge..

Providing and fixing M.S Base Plate of thickness 10 mm and weight upto 7 kg to 10 kg complete in all respect to the satisfaction of the Engineer-in-charge.

Development of tubewell by Over-pumping unit having suitable submersible pump for development of tubewell to ensure sand free discharge. All the equipment including POL and labour required for carrying out pumping tests but not limited to the following shall be arranged by the contractor at his own cost complete in all respect to the satisfaction of Engineer-in-charge: i) A suitable pump and prime mover (since power is not available at the well site). ii) Measuring devices for time, discharge and V-Notch orifice method water level recorder (digital water meter recorder/ steel tape engraved). iii) The contractor shall collected water sample in the presence of SDE/JE. This water samples should be handed over to PHED for further chemical analysis in Public Health Lab