such provisions immediately before the effective date of such rule. (c) definitions In this section the term Waters of the United States rule means the final rule issued by the Administrator of the Environmental Protection Agency and the Secretary of the Army entitled Clean Water Rule: Definition of Waters of the United States on June 29, 2015 (80 Fed. Reg. 37053). Ozone 432. To implement the national ambient air quality standards for ozone published in the Federal Register on October 26, 2015 (80 Fed. Reg. 65292): (1) the Governor of each State shall designate areas of the State as attainment, nonattainment, or unclassifiable with respect to the standards not later than October 26, 2024