We provide Tender Bidding Support for Additional Works-Investigation, Survey, Preparation Of Designs & Drawings Etc., 1Construction Of Rcc Diaphragm Wall End Cutoff For Spill Channel 2 Vibro Stone Columns And Deep Soil Mixing In Gap-Ii 3 Construction Of Ecrf Dam Gap-I Including Diaphragm Wall Cut Off Vibro Stone Columns And Deep Soil Mixing, Concrete Dam Gap-Iii And 4 Slope Protection Works On Both Sides Of Spillway And Spill Channel Etc., Of Polavaram Irrigation Project -L.S Contract System.