Valero Energy Corporation is a Fortune 500 company based in San Antonio, with approximately 20,000 employees and annual revenues of more than $30 billion. The company currently owns and operates 14 refineries in 13 locations throughout the United States and Canada. Valero’s refineries have a combined throughput capacity of over two million barrels per day, which represents approximately 10 percent of the total U.S. refining capacity. Valero is also one of the nation’s largest retail operators with approximately 4,000 retail outlets in the United States and Canada under various brand names including Diamond Shamrock, Ultramar, Valero, Beacon and Total