MNN Galleries

The 7 worst neighborhoods near refineries

Philadelphia, Pa.

Photo: Payton Chung/Flickr

8 of 9

Philadelphia, Pa.

Sunoco's Philadelphia refinery is just down the Schuylkill River from downtown Philly. Processing 335,000 barrels of oil a day, the plant is the seventh largest in the U.S.

Sunoco announced plans in October 2009 to expand operations at its Philadelphia plant after consolidation plans cut back production at some of its other facilities.