A malfunctioning transfer pump caused heating oil to seep into a drain in the floor, where it fed into the sump pump, discharging the oil into the stream, Apperson said.
"I smelled it as I got out of my car and thought 'Oh man there must be a lot," said South Riverkeeper Jesse Iliff. Crab Creek feeds into the South River. The leak continued for at least nine hours, releasing at least 50 gallons, Iliff said. MDE estimated less than 250 gallons of oil leaked into the stream, which is three-quarters of a mile long before it reaches Crab Creek.
READ MORE: Capital Gazette, Janaury 29, 2016
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