The Environmental Protection Commission amended Iowa Admin. Code Chs. 20, 22, 31, and 33. Changes incorporate federal regulations that allow facilities to construct or modify existing sources of air pollution in areas that are not in attainment with NAAQS. The amendments will take effect January 15, 2014. See https://www.legis.iowa.gov/DOCS/ACO/IAC/LINC/12-11-2013.Bulletin.pdf (pp. 1455-1456).