up-gradation of water supply and providing sewerage system in village kohand block gharaunda distt. karnal “providing, installation of 5 tube wells up to 150 m. bgl, construction of 5 tube well chambers, boundary wall, laying of internal distribution pipe lines. supply, erection, testing and commissioning of 5 submersible pumping sets for tube wells including all civil , mechanical & electric works and “providing, laying, jointing, cutting and testing of sewerage network system of s.w. pipe size 200 mm dia, 250 mm dia, 300 mm dia, 400 mm dia and 500 mm dia, construction of manhole, construction of interceptic chamber, making of household connections. operation & maintenance of water supply scheme and sewerage network system for 5 years after defect liability period of 1 year after trial run period of 3 months and all other works contingent thereto.”