This regulation establishes a tolerance for residues of carfentrazone-ethyl, (ethyl-alpha-2-dichloro-5-[4-(difluoromethyl)-4,5- dihydro-3-methyl-5-oxo-1H-1,2,4-triazol-1-yl]-4-fluorobenzene propanoate) and the metabolite carfentrazone-chloropropionic acid (alpha, 2-dichloro-5-[4-(difluoromethyl)-4,5-dihydro-3-methyl-5-oxo-1H- 1,2,4-triazol-1-yl]-4-fluorobenzenepropanoic acid) in or on barley, bran at 0.80 ppm; barley, flour at 0.80 ppm; grain, aspirated grain fractions at 1.8 ppm; grain, cereal, group 15 (except rice grain and sorghum grain) at 0.10 ppm; grain, cereal, stover at 0.80 ppm; grain, cereal, straw at 3.0 ppm; hog, fat at 0.10 ppm; hog, meat at 0.10 ppm; hog, meat byproducts at 0.10 ppm; millet, flour at 0.80 ppm; oat, flour at 0.80 ppm; poultry, meat byproducts at 0.10 ppm; rice, grain at 1.3 ppm; rice, hulls at 3.5 ppm; rye, bran at 0.80 ppm; rye, flour at 0.80 ppm; sorghum, grain at 0.25 ppm; soybean, seed at 0.10 ppm; sugarcane at 0.15 ppm; wheat, bran at 0.80 ppm; wheat, flour at 0.80 ppm; wheat, germ at 0.80 ppm; wheat, middlings at 0.80 ppm; and wheat, shorts at 0.80 ppm. FMC Corporation requested this tolerance under the Federal Food, Drug, and Cosmetic Act (FFDCA).