Maintenance area
Maintenance area means an area that was designated as nonattainment and has been re-designated in 40 CFR part 81 to attainment, meeting the provisions of section 107(3)(E) of the Act and has a maintenance plan approved under section 175A of the Act.
Source
40 CFR § 93.152
Scoping language
Terms used but not defined in this part shall have the meaning given them by the Act and EPA's regulations (40 CFR chapter I), in that order of priority.