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Green Book Nonattainment Areas for Criteria Pollutants. 25] nonatttainment areas and eight-hour ozone nonattainment areas to meet air quality standards by 2010. Nonattainment areas are subject to what's called "transportation conformity," which means local transportation and air quality officials must coordinate their planning efforts to ensure that transportation projects do not hinder an area's ability to reach its clean air goals. |
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