This regulation revises and separates the tolerances for alachlor in Sec. 180.249 into paragraphs (a) through (d). This regulation also establishes several new tolerances under paragraph (a). It further establishes several new tolerances under paragraph (d). Details of these changes are outlined in Unit II. of this document. Monsanto Company requested these changes as submitted by petitions to EPA pursuant to the Federal Food, Drug, and Cosmetic Act (FFDCA).