EPA is withdrawing significant new use rules (SNURs) promulgated under the Toxic Substances Control Act (TSCA) for four chemical substances which were the subject of premanufacture notices (PMNs). EPA published these SNURs using direct final rulemaking procedures. EPA received notices of intent to submit adverse comments on these rules. Therefore, the Agency is withdrawing these SNURs, as required under the expedited SNUR rulemaking process. EPA intends to publish in the near future proposed SNURs for these four chemical substances under separate notice and comment procedures.