Dangerous chemical leak spurs evacuation order in Ohio town 10TVOfficials: Styrene leak in Cleves, Whitewater Twp. has stopped; Evacuation order still in place WCPO 9 CincinnatiOhio ‘dangerous’ chemical spill caused by open valve on train car leads to emergency evacuation Fox NewsStyrene leak leaves officials ‘concerned’ about possibility of explosion; schools closed The Cincinnati Enquirer