survey, design, construction, supply, erection, commissioning, trial run and operation & maintenance ofground levelwater reservoir ( capacity 9741 cum ) of boosting station – i at biraincluding pump house, sub-stn building, staff quarter, office cum godown with internal illumination and sanitary & plumbing works. boundary wall and allied works & supply laying, fitting, fixing and jointing of clear water rising mainfrom wtp tokly exp way , panpur to bs-1 at bira ( approx 23000 mtr ) ofmspipe ( 1422 mm dia od ) with all specials and valves etc including road, canal & rail crossing and necessary roadrestoration and protection work etc. all completes as per direction of e.i.c for integrated surface water based w / s scheme for arsenic affected blocks of baduria, basirhat-i &ii, swarupnagar and deganga in the district of north 24 parganas.