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    <titleInfo>
      <title>Particulate Matter (PM-10): Federal Non-Attainment Area Designations, U.S. Region 9, 2013</title>
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    <abstract lang="eng" displayLabel="Abstract">This polygon shapefile contains nonattainment areas for particulate matter &amp;lt; 10 microns. Nonattainment areas are geographic areas which have not met national ambient air quality standards (NAAQS) for particulate matter air pollution. These standards are part of the Clean Air Act. See Code of Federal Regulations, Section 40 Part 81, for detailed information about Ambient Air Quality Standards.</abstract>
    <abstract lang="eng" displayLabel="Purpose">This shapefile can be used to identify boundaries of non-attainment areas in E.P.A. Region 9. Classifications of severity are also included.</abstract>
    <note lang="eng" displayLabel="Preferred citation">U.S. Environmental Protection Agency, Region 9. (2013). Particulate Matter (PM-10): Federal Non-Attainment Area Designations, U.S. Region 9, 2013. U.S. EPA Region 9. Available at: http://purl.stanford.edu/bm375vj0149</note>
    <note displayLabel="Supplemental information">Pinal County (part) West Pinal nonattainment area added, per Federal Docket number EPA-R09-OAR-2010-0491. 
Tohono O'odham tribal land boundary (San Lucy Farms) updated per ADEQ's request. 
South Coast Air Basin redesignated to attainment on June 26, 2013, effective July 26, 2013. 
More information available in 78 FR 38223: http://www.gpo.gov/fdsys/pkg/FR-2013-06-26/html/2013-15145.htm. 
Sacramento County, CA redesignated to attainment, effective October 28, 2013, per State of California's request. 
More information available at https://federalregister.gov/a/2013-23245.
More detailed information about NAAQS can be found on the following web page: http://www.epa.gov/ttn/naaqs/</note>
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    <subject authority="lcsh" lang="eng">
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      <geographic authority="geonames" authorityURI="http://www.geonames.org/ontology#" valueURI="http://sws.geonames.org/5551752/">Arizona</geographic>
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      <geographic authority="geonames" authorityURI="http://www.geonames.org/ontology#" valueURI="http://sws.geonames.org/5509151/">Nevada</geographic>
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