EPA is granting, in part, and denying, in part, pesticide petition 7E3489 submitted by Syngenta Crop Protection, Inc., and is amending the tolerance for benoxacor at 40 CFR 180.460 to include a reference to S-metolachlor, in addition to the existing reference to metolachlor. EPA issued a notice pursuant to section 408(d)(3) of FFDCA, 21 U.S.C. 346a(d)(3) in the Federal Register of August 3, 2003 (68 FR 46620) (FRL-7317-6) announcing the filing of a petition requesting that the tolerance expression for the inert ingredient benoxacor (safener) in 40 CFR 180.460 be amended to remove references to metolachlor and replace it with references to S-metoloachlor. Although EPA finds it is safe to add a reference to S-metolachlor to this tolerance regulation, EPA does not agree that grounds exist to remove the reference to metolachlor. Thus, EPA is granting Syngenta's petition in as far as it seeks to add the reference to S-metolachlor but is denying the request to remove metolachlor.