This volume contains, in ascending submission number order, 'status reports' (i.e., preliminary evaluations) prepared by staff of the Office of Toxic Substances in the Office of Pesticides and Toxic Substances for initial submissions received by EPA from chemical manufacturers, processors, and distributors between February 1, 1980, and December 31, 1982, pursuant to Section 8(e), the 'substantial risk' information reporting provision of the Toxic Substances Control Act (TSCA, 90 Stat. 2029, 15 U.S.C. 2607). The status reports contained in this volume reflect only the initial phases of EPA's evaluation process for the submitted information.