2008. Stackhouse, Cecil and United States. Bureau of Transportation Statistics. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the lead (Pb) 3... United States. Bureau of Transportation Statistics.
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2008. Stackhouse, Cecil and United States. Bureau of Transportation Statistics. This polygon shapefile depicts nonattainment and maintenance areas for the United States and its Territories for the enforcement of the ozone (O3) ... United States. Bureau of Transportation Statistics.
2008. Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) and Federal Highway Administration, Office of Planning, HEPP-1. Non-Attainment Areas: Carbon Monoxide is a polygon theme representing areas in the United States that do not meet the National Ambient Air Quality ... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).
2008. Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) and Federal Highway Administration, Office of Planning, HEPP-1. Non-Attainment Areas: Lead is a polygon theme representing areas in the United States that do not meet the National Ambient Air Quality Standard fo... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).
2008. Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) and Federal Highway Administration, Office of Planning, HEPP-1. Non-Attainment Areas: Ozone is a polygon theme representing areas in the United States that do not meet the National Ambient Air Quality Standard f... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).
2008. Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) and Federal Highway Administration, Office of Planning, HEPP-1. Non-Attainment Areas: Particulate matter 10 is a polygon theme representing areas in the United States that do not meet the National Ambient Air Qu... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).
2008. Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) and Federal Highway Administration, Office of Planning, HEPP-1. Non-Attainment Areas: Particulate matter 2.5 is a polygon theme representing areas in the United States that do not meet the National Ambient Air Q... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).
2008. Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) and Federal Highway Administration, Office of Planning, HEPP-1. Non-Attainment Areas: Sulfur Oxides is a polygon theme representing areas in the United States that do not meet the National Ambient Air Quality St... Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS).