Gives full details of Lead accumulation and depletion in east coast of Tamilnadu, as well as very important tourist places in Tamilnadu during four major seasons, vacation periods,fairs and festivals etc.Proves with evidence the cause of Lead pollution and pollutants. The major breakthrough in this research is Tsunami and its impact. Why Kodiakarai escaped from Tsunami? how Lead concentration never went below detection limits! Why Lead level high at Kodiakarai. Vehicles,fairs and festivals as major pollutants .