Annual Maintenance Work Of Sewerage I.E. Replacement Of Damaged Swg Pipes For Smooth Functioning Of System , Raising And Benching Of Manholes To The Road Flush Level, Reconstruction Of Damaged Manholes And Internal Plastering To The Damaged Manholes, Etc. For The Period Of (1) Year Under Allabanda Section, Sub Division I Of O And M Division Iv. (2nd Call) (Reserved For Sc)