(September 6, 2023, 1:21 PM EDT) -- ANCHORAGE, Alaska — A letter from the U.S. Environmental Protection Agency to Chevron U.S.A. Inc. explaining that the companies’ decommissioning of oil and gas drilling platforms on the Outer Continental Shelf (OCS) might be subject to the Clean Air Act (CAA) is not reviewable because it is not a final agency action, a Ninth Circuit U.S. Court of Appeals panel said in holding that it lacked jurisdiction over the company’s petition for review of the letter....