 In July 2007, for example, ATSDR responded to the Verdigris River flood in Coffeyville, Kansas, after an oil refinery spilled crude oil into the floodwaters, contaminating many homes in the city.ATSDR worked with EPA and state and local authorities to provide health information to local residents and advised those agencies during the clean-up process.ATSDR also assists with responding to terrorism incidents, which have included the September 11 attacks and the 2001 anthrax attacks.