Transportation Conformity Rule PM2.5 and PM10 Amendments (US Environmental Protection Agency Regulation) (EPA) (2018 Edition) The Law Library presents the complete text of the Transportation Conformity Rule PM2.5 and PM10 Amendments (US Environmental Protection Agency Regulation) (EPA) (2018 Edition). Updated as of May 29, 2018 In this action, EPA is amending the transportation conformity rule to finalize provisions that were proposed on May 15, 2009. These amendments primarily affect conformity's implementation in PM 2.5 and PM 10 nonattainment and maintenance areas. EPA is updating the transportation conformity regulation in light of an October 17, 2006 final rule that strengthened the 24-hour PM 2.5 national ambient air quality standard (NAAQS) and revoked the annual PM 10 NAAQS. In addition, EPA is clarifying the regulations concerning hot-spot analyses to address a December 2007 remand from the Court of Appeals for the District of Columbia Circuit. This portion of the final rule applies to PM 2.5 and PM 10 nonattainment and maintenance areas as well as carbon monoxide nonattainment and maintenance areas. This book contains: - The complete text of the Transportation Conformity Rule PM2.5 and PM10 Amendments (US Environmental Protection Agency Regulation) (EPA) (2018 Edition) - A table of contents with the page number of each section