The proposed rule amends two definitions in the department’s air permitting rules to exclude ethanol fuel production facilities from the meaning of the term “chemical process plants,” thereby raising the emission threshold for applicability of the state’s major source permitting rules for such facilities from 100 tons per year (TPY) of any regulated air pollutant to 250 TPY. Additionally, the proposed rule adds a definition of “North American Industry Classification System” or “NAICS” which is referenced in the amended meaning of “chemical process plants.” The proposed rule amendments are consistent with U.S. Environmental Protection Agency (EPA) regulations adopted May 1, 2007. The proposed rule amendments are not expected to require legislative ratification. OTHER RULES INCORPORATING THIS RULE: Rule 62-210.200, F.A.C., is referenced in Rules 62-4.050, 62-204.200, 62-210.200, 62-210.220, 62-210.300, 62-210.340, 62-210.370, 62-212.100, 62-212.500, 62-212.720, 62-213.100, 62-213.202, 62-213.400, 62-213.410, 62-213.412, 62-213.420, 62-213.440, 62-214.100, 62-296.100, 62-296.340, 62-296.401, 62-296.417, 62-296.470, 62-296.600, and 62-297.100, F.A.C. EFFECT ON THOSE OTHER RULES: The amendments would have no impact on Rules 62-210.220, 62-210.340, 62-296.340, 62-296.401, 62-296.417, and 62-296.600, F.A.C. The amendments would change the definition cited in Rules 62-4.050, 62-204.200, 62-210.200, 62-210.300, 62-210.370, 62-212.100, 62-212.500, 62-212.720, 62-213.100, 62-213.202, 62-213.400, 62-213.410, 62-213.412, 62-213.420, 62-213.440, 62-214.100, 62-296.100, 62-296.470, and 62-297.100, F.A.C.