EPA is withdrawing a significant new use rule (SNUR) promulgated under the Toxic Substances Control Act (TSCA) for a chemical substance identified generically as C15 olefins, which was the subject of premanufacture notice (PMN) P-11-511. EPA published this SNUR using direct final rulemaking procedures. EPA received a notice of intent to submit adverse comments on the rule. Therefore, the Agency is withdrawing this SNUR, as required under the expedited SNUR rulemaking process. EPA intends to publish a proposed SNUR for the chemical substance under separate notice and comment procedures.