Operation and Maintenance of distribution system and rising main pipe line ( CI/ DI/ UPVC/ HDPE ) and Operation and Maintenance of ( AIRP capacity- 56. 00 Cum/ hr ) and allied works of BRAHAMOTTAR MANIKCHAK and MAKIMNAGAR ground Water Supply Scheme under Berhampore Division- I, P. H. E. Dte. Period: for One Year.