. . . "Respondents also claim that units operated by end-use combustors that utilize CTRTs as an alternative fuel typically burn a variety of ???traditional fuels,??? such as coal, biomass (i.e., hog fuel, bark fuel, and other biomass fuel materials), and fuel oil, as well as other materials and wastes, such as tire derived fuel, waste derived liquid fuel, and waste derived solid fuel. 81 82" .