tender for charges for de-watering of clarifier, mixing the mud / fine sludge deposits with water while de-watering in clarifier of size 18 m radius x 6.5 m depth. , charges for removing sludge and other foreign particles from the clarifier of size 18 m x 6.5 m depth. , charges for cleaning the algae deposits on the side walls of both inner and outer rings of clarifier and bottom surface with coir/wire brush. applying and cleaning with bleaching powder on both side walls of inner ring & outer rings and also at bottom surface in clarifier of size 18 m x 6.5m depth , charges for de-watering of sludge disposal pit, removal of sludge from sludge disposal pit, and also tunnel pipes from clarifier to sludge pit. cleaning of algae deposits with coir / wire brush, and applying & cleaning with bleaching powder on inside walls of sludge pit, flash mixing chamber. , charges for removing the rust and old paint from the structure immersed in the water of clarifier and above the water level exposed to atmosphere , inlet and outlet valves exposed to atmosphere of clarifier-i. , charges for painting with one coat of rust convertor (impodex / impodor), one coat of epoxy red oxide primer and one coat of epoxy coal thar black paint one over the other with proper intervals for clarifier structures immersed in the water clarifier inlet & outlet valves, one coat of epoxy red oxide primer and two coats of epoxy coal thar black paint on the surface of the flash mixer chamber and its hand rails & supports, one coat of epoxy red oxide primer and two coats of epoxy smoke grey one over the other with proper intervals for clarifier structures above the water level exposed to atmosphere, one coat of epoxy red oxide primer and two coats of epoxy sea green on the surface of the raw water line to clarifier, raw water common inlet line to clarifier i&ii. , hire charges for heavy machineries (poclain cum bull dozer) to clean the bushes, accumulated dry leaves, tree branches & other cleanable things i