The Delaware County Hazmat Team and environmental officials are investigating a possible spill in the West Branch of the Chester Creek after 30-40 dead fish were found behind a pumping station on Friday.
The fish were found behind the pumping station on Mount Road in Aston Township, near Lewis Fisher Memorial Park.
A public works employee noticed the dead fish and a sheen on the water, and alerted authorities, Ed Beebe, the Delaware County director of emergency services, told CBS News Philadelphia…