Środowisko i energia · 26.05.2010

Draft Transportation Conformity Guidance for Quantitative Hot-spot Analyses in PM2.5 and PM10 Nonattainment and Maintenance Areas

EPA is announcing the availability of a draft transportation conformity guidance document for public comment. Once finalized, this guidance would help state and local agencies complete quantitative PM 2.5 and PM 10 hot-spot analyses for project- level transportation conformity determinations of certain highway and transit projects. A hot-spot analysis includes an estimation of project-level emissions, air quality modeling, and a comparison to the relevant national ambient air quality standards (NAAQS) in PM 2.5 and PM 10 nonattainment and maintenance areas. The U.S. Department of Transportation (DOT) is EPA's federal partner in implementing the transportation conformity regulation, and EPA coordinated with DOT on the development of this draft guidance.