(August 20, 2020, 1:35 PM EDT) -- HOUSTON — A federal judge in Texas on Aug. 19 found that the federal government should pay $20.3 million to Exxon Mobil Corp. for cleanup costs the company incurred in remediating contamination at two refineries where aviation gas (avgas) was produced during World War II and the Korean War after allocating the parties' liability for cleanup costs following a two-week bench trial (Exxon Mobil Corp. v. United States, Nos. 10-2386, 11-1814, S.D. Texas, 2020 U.S. Dist. LEXIS 149915)....