FILE - IN this Dec. 2, 2009, file photo, the Total Port Arthur refinery is shown in Port Arthur, Texas. Federal lawsuits against the U.S. Environmental Protection Agency were filed claiming the agency has failed to correct Texas air pollution control permits with loopholes that make state enforcement rare. The suits filed Thursday, July 20, 2017, by the nonprofit Washington, D.C.-based Environmental Integrity Project, target permits for the largest integrated petrochemical factory in the U.S., three refineries near the Houston Ship Channel including the largest petroleum refinery in the U.S. and a coal-fired power plant east of Dallas. (AP Photo/David J. Phillip, File)
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