JUNEAU , Alaska , Jan. 25 (UPI) -- U.S. environmental regulators searched two of Chevron Corp.'s oil facilities in Alaska because of allegations the supermajor violated the Clean Air Act. Federal authorities searched Chevron facilities on Cook Inlet because the Environmental Protection Agency said the company committed a felony by violating the Clean Air Act and giving false statements to the government , the Anchorage Daily News reports. Chevron in 2006 and again in 2007 allegedly broke the law by shutting down vapor control units that prevent pollutants from escaping oil storage tanks. Chevron said the tanks emitted "insignificant" amounts of pollution , though court documents suggest otherwise. The company in 2008 admitted to potential Clean Air Act violations , hoping to receive lesser penalties for self-reporting. The search warrants were issued to obtain evidence , including computers and photo records , to determine whether Chevron gave false statements to environmental regulators regarding the vapor control units. Chevron said it is cooperating with authorities , adding it takes the allegations "seriously."

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