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    <titleInfo>
      <title>Carbon Monoxide: California State Area Designations, 2008-2011</title>
    </titleInfo>
    <name type="corporate">
      <namePart>California. Air Resources Board. Planning and Technical Support Division</namePart>
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    <abstract lang="eng" displayLabel="Abstract">This polygon shapefile contains area designations of carbon monoxide (CO) levels in California as required under Health and Safety Code section 39608. The designations are consistent with the criteria established in the California Code of Regulations, title 17, sections 70300 through 70306, and Appendices 1 through 3, thereof. There are four possible designation categories: attainment, nonattainment, nonattainment-transitional, and unclassified. Nonattainment areas are geographic areas which have not met National Ambient Air Quality Standards for Carbon Monoxide air pollution. In addition, CO nonattainment areas have been assigned a classification, commensurate with the severity of their air quality problem, under Health and Safety Code section 40921.5. The State area designations are reviewed annually and approved by the State Air Resources Board. Projection: Teale Albers, NAD83</abstract>
    <abstract lang="eng" displayLabel="Purpose">This shapefile can be used to identify state carbon monoxide pollution area designations from the prior three-year period (2008-2011) in accordance with the California State Ambient Air Quality Standard.</abstract>
    <note lang="eng" displayLabel="Preferred citation">U.S. Environmental Protection Agency. (2011). Carbon Monoxide: California State Area Designations, 2008-2011. California Air Resources Board. Available at: http://purl.stanford.edu/st637td0472.</note>
    <note displayLabel="Supplemental information">The State area designations are reviewed annually and approved by the State Air Resources Board. In 2011, staff did not propose any changes to the State carbon monoxide designations. Updated: 02/22/11</note>
    <note displayLabel="WGS84 Cartographics">This layer is presented in the WGS84 coordinate system for web display purposes. Downloadable data are provided in native coordinate system or projection.</note>
    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">Air quality management</topic>
    </subject>
    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">Carbon monoxide</topic>
    </subject>
    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">United States. Clean Air Act</topic>
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    <subject authority="lcsh" lang="eng">
      <topic authority="lcsh" authorityURI="http://id.loc.gov/authorities/subjects.html">California. Air Quality Standards Section</topic>
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      <geographic authority="geonames" authorityURI="http://www.geonames.org/ontology#" valueURI="http://sws.geonames.org/3687919/">California</geographic>
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      <temporal encoding="w3cdtf">2008-2011</temporal>
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    <originInfo>
      <dateIssued encoding="w3cdtf" keyDate="yes">2011</dateIssued>
      <dateValid encoding="w3cdtf" point="start">2008</dateValid>
      <dateValid encoding="w3cdtf" point="end">2011</dateValid>
      <place>
        <placeTerm type="text">Sacramento, California, US</placeTerm>
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      <publisher>California. Air Resources Board</publisher>
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      <url usage="primary display">https://purl.stanford.edu/st637td0472</url>
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        <title>California Air Resources Board GIS Maps &amp; Data</title>
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    <accessCondition type="useAndReproduction">This item is in the public domain.  There are no restrictions on use.</accessCondition>
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