Restoration of rain damages to WSS Thulel and Kakroti in tehsil Sihunta Distt Chamba HP SH Drilling of Mini Borewell 80 mtrs deep

Transporation of suitable truck mounted DTH/odex percussion calyx/RC drilling with portable rigs along with necessary accessories etc.to the site of work and errection of portable rig including leveling etc. complete in all respects as per direction of Engineer-In-Charge.

Drilling of bore of 200/220 mm dia as per sepcification laid down in BIS: 2800-1991( Part-I) with up-to-date ammendments, if any with DTH/ODEX method Starting with 500mm dia reduced to 400mm dia ODEX attachment, if any in all kind of soils, boulders, rock, collapsible strata, sturated soils, artesian conditions including the cost of all consumable, stores, water, fuel, lubricants and other accessories etc. complete in all respects as per the directions of Engineer -in-Charge within all leads and lifts.

Drilling bores of 128 mm dia as per IS-2800-1979 fromboizem of over burden to required depth in conglomerate collapsible state and rocky formation as per decission fo the Engineer-in-Chief/Hydeogeologist.

Supply / Lowering of IS marked Electrict resistance Welded M.S. pipe 200 mm dia nominal size housing 6.4 mm thick confirming to BIS: 4270-2001 with up- to-date ammendments if any, of 3 to 6 mtrs. in length welded without any circumferential joints into bore hole in vertical position including cost of all scaffolding derricks, poles, clamps embeded in foundation etc. including cost of all cutting, threading and welding of pipes etc. within all leads and lifts, complete in all respects as per direction of the Engineer- in-Charge within all leads and lifts.

Providing and fixing suitable casing shoe 200 mm dia and approved by E-in C office latter No. IPH-CTR-36209/HAND PUMPS (2009-10) 09-9452-58 dated 27-11-2009 and bit tube as per requirement of ODEX attachment complete in all respect as per direction of the Engineer-in-charge within all leads and fifts.

Collection and preservation of soil samples in polythene bags complete in all respect as per direction of the Engineer-in-charge within all leads and lifts.

Development of tubewell by continous over pumping method with VT Pump/ Submersible pumps of suitable capacity not less than double the discharge established by the compressor method /design discharge, until the well is stand free as per clause 4.2 of BIS 11189-1985 uptodate ammendment, if any, complete in all respects as per direction of the Engineer -in-Charge within all leads and lifts. The draw down in all and discharge to be established by running the VT/submersible pump continouslly for 8 hours in the presence of officer not less than double the discharge established

Site Development by depolyment of JCB to level the bore well site complete in all respect as per direction of the Engineer-in-charge within all leads and lifts.