United States. Environmental Protection Agency. Office of Air Quality Planning and Standards, United States. Department of Transportation. Bureau of Transportation Statistics. Office of Spatial Analysis and Visualization, & United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology (2004). National Transportation Atlas Database (NTAD): Nonattainment Areas 2004-Present [supporting datasets]. United States. Department of Transportation. Bureau of Transportation Statistics. https://doi.org/10.21949/1520833
United States. Environmental Protection Agency. Office of Air Quality Planning and Standards, United States. Department of Transportation. Bureau of Transportation Statistics. Office of Spatial Analysis and Visualization, and United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology. National Transportation Atlas Database (NTAD): Nonattainment Areas 2004-Present [supporting datasets]. United States. Department of Transportation. Bureau of Transportation Statistics, 2004. https://doi.org/10.21949/1520833.
United States. Environmental Protection Agency. Office of Air Quality Planning and Standards, et al. National Transportation Atlas Database (NTAD): Nonattainment Areas 2004-Present [supporting datasets]. United States. Department of Transportation. Bureau of Transportation Statistics, 2004, ROSA P. https://doi.org/10.21949/1520833.
The Nonattainment Area datasets are 2004-Present and are from the Environmental Protection Agency (EPA), and part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics' (BTS') National Transportation Atlas Database (NTAD). This U.S. EPA Office of Air and Radiation (OAR) - Office of Air Quality Planning and Standards (OAQPS) web service contains the following state level layers related to nonattainment areas and designations: Ozone 8-hr (1997 standard), Ozone 8-hr (2008 standard), Lead (2008 standard), SO2 1-hr (2010 standard), PM2.5 24hr (2006 standard), PM2.5 Annual (1997 standard), PM2.5 Annual (2012 standard), and PM10 (1987 standard). Layers are drawn at all scales.
United States. Environmental Protection Agency. Office of Air Quality Planning and Standards, United States. Department of Transportation. Bureau of Transportation Statistics. Office of Spatial Analysis and Visualization, & United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology (2004). National Transportation Atlas Database (NTAD): Nonattainment Areas 2004-Present [supporting datasets]. United States. Department of Transportation. Bureau of Transportation Statistics. https://doi.org/10.21949/1520833
United States. Environmental Protection Agency. Office of Air Quality Planning and Standards, United States. Department of Transportation. Bureau of Transportation Statistics. Office of Spatial Analysis and Visualization, and United States. Department of Transportation. Office of the Assistant Secretary for Research and Technology. National Transportation Atlas Database (NTAD): Nonattainment Areas 2004-Present [supporting datasets]. United States. Department of Transportation. Bureau of Transportation Statistics, 2004. https://doi.org/10.21949/1520833.
United States. Environmental Protection Agency. Office of Air Quality Planning and Standards, et al. National Transportation Atlas Database (NTAD): Nonattainment Areas 2004-Present [supporting datasets]. United States. Department of Transportation. Bureau of Transportation Statistics, 2004, ROSA P. https://doi.org/10.21949/1520833.
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findings, journal articles, guidelines, recommendations, or other information authored or co-authored by
USDOT or funded partners. As a repository, ROSA P retains documents in their original published format to
ensure public access to scientific information.
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