WHITEMARSH TOWNSHIP, Pa. - Emergency crews are responding to the scene of a train derailment in Montgomery County. According to authorities, cars on a CSX Norfolk Southern train derailed in the area of Stenton Avenue, Flourtown Road and Joshua Road in Whitemarsh Township just after 5 a.m. on Monday. Sources told FOX 29 that 15 to 20 cars believed to be carrying hazardous materials derailed in the area, prompting a Level 2 hazmat response. Police later said the only material leaking out of the train cars was silicone pellets, which pose no threat to the public.