The Delaware City Refinery extracts on average over 450 million gallons of water from the Delaware River daily, for the purpose of cooling plant equipment and units as it processes nearly 200,000 barrels of petroleum per day. In the process, it impinges millions of fish on the intake screens and entrains millions more small fish, eggs and larvae. The estimated death toll of fish impingement and entrainment at the refinery is 100%. The refinery has been described as one of the largest predators on the Delaware River, out-fishing commercial and recreational fisheries combined for many species.