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21. Nonattainment Areas for Ozone Pollution: United States and Territories, 2008

2008. United States. Bureau of Transportation Statistics and Stackhouse, Cecil. 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.

22. Power Plant Entrainment (Polygons): Southern California, 2008

2008. California. Department of Fish and Game. Marine Resources Region. This polygon shapefile depicts the estimated extent of power plant entrainment in the Southern California Bight. Included in the attributes is scal...

23. Urban Lands: San Francisco Bay Area, California, 2008

2008. Bay Area Open Space Council, Conservation Lands Network, San Francisco Bay Area Upland Habitat Goals Project, and GreenInfo Network (Firm). This polygon shapefile depicts urban areas in the nine county San Francisco Bay Area Region, California. This data comes directly from the Californ... Bay Area Open Space Council.

24. Williamson Act Parcels, Monterey County, California, 2008

2008. Monterey County (Calif.). This polygon shapefile depicts land parcels that are regulated under the Willimason Act in Monterey County, California as of 2008. The California L... Monterey County (Calif.).