This regulation establishes time-limited tolerances for residues of the herbicide pendimethalin and its 3,5-dinitrobenzyl alcohol metabolite (CL 202, 347) in or on fresh mint hay and mint oil in connection with EPA's granting an emergency exemption under section 18 of the Federal Insecticide, Fungicide, and Rodenticide Act authorizing use of the pesticide on mint in Idaho, Oregon, South Dakota and Washington. These tolerances will expire and are revoked on May 31, 1998. DATES: This regulation becomes effective May 23, 1997. Objections and requests for hearings must be received by EPA on or before July 22, 1997.