RIVERSIDE (CNS) - A spill of anti-freeze and a chemical used to seal automobile radiators flowed down a Riverside street but firefighters stopped the flow of hazardous materials into  a storm drain, authorities said Wednesday.The spill was reported at 10:09 a.m. Tuesday at the intersection of Gramercy Place and Wohlstetter Street, Riverside Fire Department Battalion Chief Jeff DeLaurie said.Firefighters didn't know what the green liquid was when they arrived, DeLaurie said."Firefighters worked quickly to stop the unknown liquid from entering the storm drain and adjacent flood control channel by building an earthen dam at the end of Gramercy," he said.The Riverside County Department of Environmental Health helped firefighters determine the chemical makeup of the spill, DeL
