FILE - This May 25, 2017 aerial photo shows the Standard Oil Refinery in El Segundo, Calif., with Los Angeles International Airport in the background and the El Porto neighborhood of Manhattan Beach, Calif., in the foreground. A plan to extend California's cap-and-trade program for another decade looks beyond cutting greenhouse gas emissions and takes aim at toxic air in the polluted neighborhoods around refineries and factories. (AP Photo/Reed Saxon, File)
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