Section 52.2063 - Original identification of plan section(a) This section identifies the original "Air Implementation Plan for the Commonwealth of Pennsylvania" and all revisions submitted by Pennsylvania that were federally approved prior to February 10, 2005. The information in this section is available in the 40 CFR, part 52, Volume 2 of 2 (§§ 52.1019 to the end of part 52) editions revised as of July 1, 2005 through July 1, 2011, and the 40 CFR, part 52, Volume 3 of 3 (§§ 52.2020 to the end of part 52) edition revised as of July 1, 2012. 78 FR 60225 , Oct. 1, 2013