UPDATE: WFPL listeners have funded this story - THANKS! Read and listen to the three part series.Coal-burning power plants produce coal ash. Environmental groups say toxins in the coal ash are seeping into ground water at some dump sites, including three in Kentucky.Power companies say they can safely store it, and LG&E wants to open a new coal ash dump along the Ohio River.What dangers do we face from coal ash... and are companies and regulators doing enough to keep us safe?