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2010. United States. National Oceanic and Atmospheric Administration, United States. Department of Commerce, Coastal Services Center (U.S.), and United States. National Ocean Service. To improve public health and the environment, the United States Environmental Protection Agency (USEPA) collects information about facilities, site... Coastal Services Center (U.S.).
2011. Stephen P. Teale Data Center (Calif.). and California. Air Resources Board. Planning and Technical Support Division. This polygon shapefile shows area designations in California as required under Health and Safety Code section 39608 for ozone, nitrogen dioxide, su... California. Air Resources Board.