Coal-burning power plants in Turkey produce large quantities of coal-related wastes, which are collected through the use of various systems. Coal ash is presently accumulating in Turkey at a rate in excess of 10 million tons (t) annually. Roughly 1% of this is being used in a variety of products such as concrete, aggregate in stabilizing roadways, etc. When coal is burned, loss of material results in an increased concentration of most radionuclides found in the waste material. The object of this study is to analyze radiochemical element concentration of coal, bottom ash, and fly ash, and to evaluate the gross radium isotope activities in groundwaters around Yatagan Thermal Power Plant. The results show that the waste disposal site near the thermal power plant contains a major enhancement of radioactivity.