Operation and Maintenance of distribution system and rising main pipe line ( CI/ DI/ UPVC/ HDPE ) and Operation and Maintenance of Iron Removal Plant of Pressure Type ( IEP Capacity- 16. 00 cub. m/ Hr ) AND ( IEP Capacity- 134. 00 cub. m/ Hr ) and allied works of Bali Zone- I and Bali Zone- II ground Water Supply Scheme under Berhampore Division- I, P. H. E. Dte. Period: for One Year.