WASHINGTON, D.C. - A panel of the District of Columbia U.S. Circuit Court of Appeals on June 27 vacated a 1998 U.S. Environmental Protection Agency rule that exempted fuels derived from hazardous waste from regulation under the Resource Conservation and Recovery Act (RCRA), ruling that 42 U.S. Code Section 6924(q) specifically requires the agency to regulate such materials (Natural Resources Defense Council, et al. v. U.S. Environmental Protection Agency, et al., Nos. 98-1379, 98-1429, 98-1431, D.C. Cir.; 2014 U.S. App. LEXIS 12118).