The Environmental Protection Agency (EPA) published a direct final rule and an associated notice of proposed rulemaking of the same title on April 11, 1996 (61 FR 16050, 61 FR 16068). Both actions were to delete or modify certain rules previously promulgated under the Clean Air Act in the Code of Federal Regulations (CFR), 40 CFR parts 51 and 52, clarify their legal status and remove unnecessary, obsolete or burdensome regulations. EPA received adverse comments on the deletion of rules 40 CFR 51.100(o), 40 CFR 51.101, 40 CFR 51.110(g) and 40 CFR 51.213 as published in both the direct final rule and associated notice of proposed rulemaking. In response to those comments, EPA withdrew those sections from the direct final rule on June 14, 1996 (61 FR 30162). In today's action, EPA is finalizing the notice of proposed rulemaking with respect to these sections. Separate from the notice of proposed rulemaking action, EPA is also removing sections 40 CFR 51.103(a)(1) and (a)(2), as they were superseded by the Clean Air Act Amendments of 1990.