567—22.6 (455B) Nonattainment area designations. Section 107(d) of the federal Clean Air Act, 42 U.S.C. §7457(d), requires each state to submit to the Administrator of the federal Environmental Protection Agency a list of areas that exceed the national ambient air quality standards, that are lower than those standards, or that cannot be classified on the basis of current data. A list of Iowa’s nonattainment area designations is found at 40 CFR Part 81.316 as amended through January 5, 2005. The commission uses the document entitled “Criteria for Revising Nonattainment Area Designations”1 (June 14, 1979) to determine when and to what extent the list will be revised and resubmitted.
1	Filed with Administrative Rules Coordinator, also available from the department.