Construction of Sewerage Network on Gadhechi River Banks and Constructing Gadhechi River Rejuvenation Works Including Storm Water Guiding Concrete Banks, Drop Structures, Rain Water Harvesting Structures, Service Road and Pipe Railing for Bhavnagar Municipal Corporation, Bhavnagar Including Operation & Maintenance for Five (5) Years Under Amrut Grant Including Defect Liability. at Bhavnagar,Gujarat,India