This regulation establishes a tolerance for combined residues of imazethapyr, its metabolite CL 288511 and its metabolite CL 182704 in or on rice bran, rice grain, and rice straw. This regulation also establishes a tolerance for combined residues of imazethapyr and its metabolite CL 288511 in or on crayfish and meat byproducts of cattle, goat, hog, horse, and sheep. BASF requested these tolerances under the Federal Food, Drug, and Cosmetic Act, as amended by the Food Quality Protection Act of 1996.