tender for geo-technical & sub surface investigation, surveying, planning, designing, construction & commissioning of minimum 5.0 meter diameter radial collector well with minimum 600 mm dia. & 300 meter long infiltration gallery with lcg strainer of minimum 8 mm thick including sub surface dyke to harvest 16.60 mld raw water with 23 hours operation ( 720 m3 / hr. ) along with 300 kva ht substation at vicinity of high bank with supplying & laying of 450 mm dia. 12 mm thick spiral welded m.s. pipe line from intake well to header to di rising main line of ( approx. length 750 metre ) with necessary civil, electrical, mechanical & all other allied works related to water intake arrangement from river kangshabati including approach bridge & substation, lighting with yard and internal illumination complete in all respect on turnkey basis and after satisfactory completion and commissioning, 3 ( three ) months trial run, necessary training of maintenance staff & thereafter ( subsequently ) 1 ( one ) years operation and maintenance with security and guarding arrangement for jhargram water supply scheme under state grant