On January 26, 2016, A CSX freight train struck a rock slide and lost 5,520 gallons of diesel fuel and lube oil at Mile Post 217 in Whick, Breathitt County, KY. The derailment was adjacent to the North Fork of the Kentucky River and fuel impacted the river. CSX mobilized resources and contractors to remediate the release. The locomotives were hauling empty coal cars. Kentucky Department of Environmental Protection (KYDEP) requested EPA Region 4 assistance due to the amount of fuel released and the proximity to the river. OSC Harper was deployed from Atlanta and integrated into Unified Command with CSX and KYDEP. EPA Superfund Technical Assessment and Response Team (START) contractors were also deployed. Downstream drinking water facility was notified and KYDEP is assisting with water samples from the river upstream of the water treatment plant and both raw and finished water sampling.