Mealey's (August 5, 2021, 12:59 PM EDT) -- WASHINGTON, D.C. — The Federal Circuit U.S. Court of Appeals on Aug. 4 affirmed a lower court decision holding the federal government liable for more than $1.6 million in remediation costs incurred from 2015 to 2019 in relation to four oil companies’ production of aviation gasoline (avgas) in California during World War II. The appeals court rejected the federal government’s arguments that, among other things, the oil companies’ damage claims were barred by res judicata in the long-running litigation....