On January 16, 2007, about 8:43 a.m., eastern standard time, northbound CSX Transportation (CSX) freight train Q502-15, traveling about 47 mph through a curve, derailed 26 of its 80 cars near Shepherdsville, Kentucky. Twelve of the derailed cars contained hazardous materials. Three of those cars breached and released significant amounts of flammable hazardous liquids, which ignited and burned. About 500 people were evacuated from the area near the accident. No one was injured during the derailment; however, 50 people and 2 emergency responders were treated at local hospitals for minor injuries related to the hazardous materials release and fire. CSX estimated the total costs associated with this accident at $22.4 million. The weather was dry and cloudy, although recent rains had left the soil well saturated. The temperature was 28° F with 14 mph winds.