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The Florida EPA is expected to ask the Orlando Utilities Commission to investigate the ash pile from its coal plant in eastern Orange County in early 2009. Officials believe the landfill is leaking radioactivity into a shallow underground aquifer. If the uranium and radium found in the [[Coal waste|coal combustion waste]] is causing elevated radioactivity in groundwater, it would be a sign that the liner is failing. Authorities say there is no immediate threat to local residents. The ash pile is 70-feet tall and holds several million tons of coal waste. As of September 2010 the EPA had taken no steps to close down the plant.<ref>Kevin Spear, [http://www.orlandosentinel.com/orl-coal2509jan25,0,1171050.story "Fears mount on how OUC handles ash from coal plant,"] ''Orlando Sentinel,'' January 25, 2009.</ref>