(a) With the exceptions set forth in this subpart, the Administrator approves Arkansas' plan for the attainment and maintenance of the national standards under section 110 of the Clean Air Act. Further, the Administrator finds that the plan satisfies all requirements of Part D of the Clean Air Act, as amended in 1977, except as noted below.
(b) 1997 8-hour ozone NAAQS: The SIPs submitted December 17, 2007 and March 28, 2008 are partially disapproved for Clean Air Act (CAA) elements 110(a)(2)(C), (D)(i)(II) (interfere with measures in any other state to prevent significant deterioration of air quality), (D)(ii), and (J), only as it relates to Greenhouse Gas emissions.
(c) 1997 PM2.5 NAAQS: The SIP submitted March 28, 2008 is disapproved for CAA element 110(a)(2)(D)(ii).
(d) 2006 PM2.5 NAAQS: The SIPs submitted March 28, 2008 and September 16, 2009 are disapproved for CAA element 110(a)(2)(D)(ii). [45 FR 6571, Jan. 29, 1980, as amended at 77 FR 50038, Aug. 20, 2012; 80 FR 11577, Mar. 4, 2015]