EPA is promulgating an amendment to the regulations governing significant new uses of chemical substances. The amendment authorizes EPA to impose any of the ``significant new use'' designations in 40 CFR part 721 subpart B using expedited rulemaking procedures to promulgate ``significant new use'' rules (SNURs) for [[Page 16312]] certain new chemical substances not subject to the Toxic Substances Control Act (TSCA) section 5(e) Orders (referred to as ``non-5(e) SNURs''). Currently, the significant new use regulations limit the type of activities which EPA can designate as a significant new use by expedited rulemaking without first issuing a section 5(e) Order. This amendment allows EPA to promulgate expedited SNURs for certain new chemical substances without issuing a section 5(e) Order for the substance, and thereby facilitates EPA's ability to efficiently and expeditiously regulate new chemical substances. DATES: This rule will become effective on May 30, 1995. In accordance with 40 CFR 23.5, this rule shall be promulgated for purposes of judicial review at 1 p.m. eastern time on April 12, 1995.