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The Bill Greehey Refineries East and West plants are located in Corpus Christi on the Texas Gulf Coast along the Corpus Christi Ship Channel. The East refinery processes sour crude oil, and the West refinery processes sweet crude oil, sour crude oil and residual fuel oil. The feedstocks are delivered by tanker and barge via deepwater docking facilities along the Corpus Christi Ship Channel, and West Texas or South Texas crude oil is delivered via pipelines. The refineries' physical locations allow for the transfer of various feedstocks and blending components between them. Other finished products are also distributed by ship and barge across docks and third-party pipelines. Valero commissioned the grass-roots Corpus Christi refinery in 1983, now referred to as the West plant. This facility is considered one of the most complex refineries in the world. The East plant was acquired in 2001.