This document establishes tolerances for residues of the herbicide thiazopyr (3-pyridinecarboxylic acid, 2-(difluoromethyl)-5- (4,5-dihydro-2-thiazolyl)-4-(2-methylpropyl)-6-(trifluoromethyl)-, methyl ester) and its metabolites determined as 2-(difluoromethyl)-6- (trifluoromethyl)-3,4,5-pyridinetricarboxylic acid, all expressed as the parent equivalents in or on the raw agricultural commodities orange and grapefruit. Rohm and Haas Company submitted a petition to EPA under the Federal Food, Drug and Cosmetic Act as amended by the Food Quality Protection Act of l996 requesting the tolerances.