In this Order, EPA denies, in part, a petition requesting the modification or revocation of the pesticide tolerances for alachlor, chlorothalonil, methomyl, metribuzin, and thiodicarb established under section 408 of the Federal Food, Drug, and Cosmetic Act ("FFDCA"). The petition was filed on December 17, 2004, by the States of New York, California, and Connecticut, and the Commonwealth of Massachusetts ("the States"). In their petition, the States contend that the risks posed by these pesticide tolerances must be assessed utilizing the additional tenfold (10X) safety factor for the protection of infants and children and that once this additional factor is included the challenged tolerances no longer meet the safety standard under FFDCA section 408. EPA is denying the petition to modify or revoke as to the tolerances for the pesticides alachlor, chlorothalonil, and metribuzin. EPA is deferring action on the petition as regards the tolerances for methomyl and thiodicarb given the ongoing Agency proceedings to address the safety of these pesticides.