Removal of Hyacinth and weeds, Vegetations and floating materials of Water weeds and floating materials in Perumbakkam Tank by using floating machinery, conveying and dumping the removed materials in Tambaram Taluk of Chengalpattu District. Removal of Hyacinth and weeds, Vegetations and floating materials of Water weeds and floating materials in Perumbakkam Tank by using floating machinery, conveying and dumping the removed materials in Tambaram Taluk of Chengalpattu District.