﻿<metadata>
  <idinfo>
    <citation>
      <citeinfo>
        <origin>Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)</origin>
        <origin>Butch Stackhouse, U.S. Environmental Protection Agency, State and Local Programs Group, Air Quality Policy Division, Office of Air Quality Planning and Standards</origin>
        <pubdate>20060101</pubdate>
        <title>Ozone_1hr_1990NAAQS</title>
        <geoform>vector digital data</geoform>
        <onlink>http://www.bts.gov/programs/geographic_information_services/</onlink>
      </citeinfo>
    </citation>
    <descript>
      <abstract>Non-attainment and maintenance areas for the United States and its territories. The standard for the Ozone 1 hour NAA is 0.12 ppm. For more detailed information on this dataset, see the Overview Description in the Entity Attribute section of this document.</abstract>
      <purpose>To establish the spatial boundaries of each nonattainment and maintenance area.</purpose>
      <supplinf>The 1 hour standard is incorporated within the Ozone dataset.</supplinf>
    </descript>
    <timeperd>
      <timeinfo>
        <sngdate>
          <caldate>20110101</caldate>
        </sngdate>
      </timeinfo>
      <current>publication date</current>
    </timeperd>
    <status>
      <progress>Complete</progress>
      <update>Annually</update>
    </status>
    <spdom>
      <bounding>
        <westbc>-123.219020</westbc>
        <eastbc>-67.959750</eastbc>
        <northbc>48.261533</northbc>
        <southbc>25.137422</southbc>
      </bounding>
    </spdom>
    <keywords>
      <theme>
        <themekt>Air Quality</themekt>
        <themekey>Maintenance area</themekey>
        <themekey>Nonattainment area</themekey>
        <themekey>Criteria Pollutant</themekey>
        <themekey>Ozone</themekey>
      </theme>
      <place>
        <placekt>None</placekt>
        <placekey>USA</placekey>
      </place>
      <temporal>
        <tempkt>None</tempkt>
        <tempkey>2007</tempkey>
        <tempkey>2011</tempkey>
        <tempkey>2008</tempkey>
        <tempkey>2009</tempkey>
        <tempkey>2010</tempkey>
        <tempkey>2012</tempkey>
        <tempkey>2013</tempkey>
      </temporal>
    </keywords>
    <accconst>None</accconst>
    <useconst>The Non-attainment Area - Ozone dataset, or any portion thereof, can be freely distributed as long as this metadata entry is included with each distribution. Acknowledgment of the Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS) National Transportation Atlas Databases (NTAD) 2013 would be appreciated in products derived from these data.</useconst>
    <ptcontac>
      <cntinfo>
        <cntorgp>
          <cntorg>Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)</cntorg>
          <cntper>Office of Geospatial Information Systems</cntper>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing and physical</addrtype>
          <address>1200 New Jersey Ave., SE</address>
          <city>Washington</city>
          <state>DC</state>
          <postal>20590</postal>
          <country>US</country>
        </cntaddr>
        <cntvoice>1 202 366 DATA</cntvoice>
        <cntemail>answers@bts.gov</cntemail>
      </cntinfo>
    </ptcontac>
    <ptcontac>
      <cntinfo>
        <cntorgp>
          <cntorg>U.S. Environmental Protection Agency</cntorg>
          <cntper>Butch Stackhouse</cntper>
        </cntorgp>
        <cntpos>State and Local Programs Group, Air Quality Policy Division, Office of Air Quality Planning and Standards</cntpos>
        <cntvoice>919.541.5208</cntvoice>
        <cntemail>stackhouse.butch@epa.gov</cntemail>
      </cntinfo>
    </ptcontac>
    <secinfo>
      <secclass>Unclassified</secclass>
    </secinfo>
    <native>Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.1.0.3035</native>
    <crossref>
      <citeinfo>
        <origin>Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)</origin>
        <pubdate>20110101</pubdate>
        <title>National Transportation Atlas Databases (NTAD) 2013</title>
        <geoform>vector digital data</geoform>
        <pubinfo>
          <pubplace>Washington, DC</pubplace>
          <publish>Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)</publish>
        </pubinfo>
        <onlink>http://www.bts.gov/programs/geographic_information_services/</onlink>
      </citeinfo>
    </crossref>
  </idinfo>
  <dataqual>
    <attracc>
      <attraccr>Unknown</attraccr>
      <qattracc>
        <attraccv>None</attraccv>
        <attracce>Unknown</attracce>
      </qattracc>
    </attracc>
    <logic>None</logic>
    <complete>Unknown</complete>
    <posacc>
      <horizpa>
        <horizpar>Unknown</horizpar>
      </horizpa>
    </posacc>
    <lineage>
      <srcinfo>
        <srccite>
          <citeinfo>
            <pubdate>20050101</pubdate>
            <title>40 Code of Federal Regulations Part 81</title>
            <othercit>The spatial boundaries of each nonattainment and maintenance area are defined in 40 Code of Federal Regulations Part 81.</othercit>
            <onlink>http://www.epa.gov/epahome/cfr40.htm</onlink>
          </citeinfo>
        </srccite>
        <typesrc>None</typesrc>
        <srctime>
          <timeinfo>
            <sngdate>
              <caldate>20050101</caldate>
            </sngdate>
          </timeinfo>
          <srccurr>publication date</srccurr>
        </srctime>
        <srccitea>40 CFR</srccitea>
        <srccontr>The spatial boundaries of each nonattainment and maintenance area are defined in 40 Code of Federal Regulations Part 81.</srccontr>
      </srcinfo>
      <srcinfo>
        <srccite>
          <citeinfo>
            <origin>U.S. Environmental Protection Agency</origin>
            <pubdate>20050101</pubdate>
            <title>Green Book</title>
            <onlink>http://www.epa.gov/oar/oaqps/greenbk/</onlink>
          </citeinfo>
        </srccite>
        <typesrc>None</typesrc>
        <srctime>
          <timeinfo>
            <sngdate>
              <caldate>20050101</caldate>
            </sngdate>
          </timeinfo>
          <srccurr>publication date</srccurr>
        </srctime>
        <srccitea>Green Book</srccitea>
        <srccontr>The United States Environmental Protection Agency's (EPA) "Green Book" defines Criteria Pollutants. EPA uses six "criteria pollutants" as indicators of air quality, and has established for each of them a maximum concentration above which adverse effects on human health may occur. These threshold concentrations are called National Ambient Air Quality Standards (NAAQS).</srccontr>
      </srcinfo>
      <procstep>
        <procdesc>Data collected from the Environmental Protection Agency or created using base geographic reference layers and physical descriptions provided by EPA and contained in in 40 Code of Federal Regulations Part 81.</procdesc>
        <procdate>20040101</procdate>
      </procstep>
      <procstep>
        <procdesc>Updated with information from the EPA Green Book.</procdesc>
        <procdate>20050101</procdate>
      </procstep>
      <procstep>
        <procdesc>Spatial data edited and cleaned to more closely match shorelines.</procdesc>
        <procdate>20060101</procdate>
      </procstep>
      <procstep>
        <procdesc>Standard quality control processes performed in preparation for publication.</procdesc>
        <procdate>20060101</procdate>
        <proccont>
          <cntinfo>
            <cntorgp>
              <cntorg>Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)</cntorg>
              <cntper>Geospatial Information Program</cntper>
            </cntorgp>
            <cntaddr>
              <addrtype>mailing and physical</addrtype>
              <address>400 7th Street, SW Room 4117</address>
              <city>Washington</city>
              <state>DC</state>
              <postal>20590</postal>
              <country>US</country>
            </cntaddr>
            <cntvoice>1 202 366 DATA</cntvoice>
            <cntfax>1 202 366 3640</cntfax>
            <cntemail>answers@bts.gov</cntemail>
          </cntinfo>
        </proccont>
      </procstep>
    </lineage>
  </dataqual>
  <spdoinfo>
    <direct>Vector</direct>
    <ptvctinf>
      <sdtsterm>
        <sdtstype>GT-polygon composed of chains</sdtstype>
        <ptvctcnt>107</ptvctcnt>
      </sdtsterm>
    </ptvctinf>
  </spdoinfo>
  <spref>
    <horizsys>
      <geograph>
        <latres>8.983152841195215e-009</latres>
        <longres>8.983152841195215e-009</longres>
        <geogunit>Decimal Degrees</geogunit>
      </geograph>
      <geodetic>
        <horizdn>D WGS 1984</horizdn>
        <ellips>WGS 1984</ellips>
        <semiaxis>6378137.0</semiaxis>
        <denflat>298.257223563</denflat>
      </geodetic>
    </horizsys>
  </spref>
  <eainfo>
    <detailed>
      <enttyp>
        <enttypl>Ozone_1hr_1990NAAQS</enttypl>
        <enttypd>Non-Attainment Areas: Ozone</enttypd>
        <enttypds>RITA/BTS</enttypds>
      </enttyp>
      <attr>
        <attrlabl>FID</attrlabl>
        <attrdef>Internal feature number.</attrdef>
        <attrdefs>ESRI</attrdefs>
        <attrdomv>
          <udom>Sequential unique whole numbers that are automatically generated.</udom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Shape</attrlabl>
        <attrdef>Feature geometry.</attrdef>
        <attrdefs>ESRI</attrdefs>
        <attrdomv>
          <udom>Coordinates defining the features.</udom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>COMPOSID</attrlabl>
        <attrdef>Composite ID of area. Pollutant name, year of designation, and text name of area</attrdef>
        <attrdefs>EPA</attrdefs>
      </attr>
      <attr>
        <attrlabl>Pollutant</attrlabl>
        <attrdef>Type of pollutant</attrdef>
        <attrdefs>EPA</attrdefs>
        <attrdomv>
          <edom>
            <edomv>Ozone-1Hr</edomv>
            <edomvd>One hour ozone area</edomvd>
            <edomvds>EPA</edomvds>
          </edom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>AREA_NAME</attrlabl>
        <attrdef>Name of the NAA as designated by the EPA</attrdef>
        <attrdefs>EPA</attrdefs>
        <attrdomv>
          <udom>Character Value</udom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>State</attrlabl>
        <attrdef>Primary state in which NAA is found</attrdef>
        <attrdefs>EPA</attrdefs>
        <attrdomv>
          <codesetd>
            <codesetn>Official List of U.S. Postal Code Abbreviations</codesetn>
            <codesets>U.S. Postal Service (USPS)</codesets>
          </codesetd>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Current_At</attrlabl>
        <attrdef>Current Attainment</attrdef>
        <attrdefs>EPA</attrdefs>
        <attrdomv>
          <edom>
            <edomv>Maintenance</edomv>
            <edomvd>Under supervision</edomvd>
            <edomvds>EPA</edomvds>
          </edom>
          <edom>
            <edomv>Revoked NAAQS</edomv>
            <edomvd>Revoked attainment status</edomvd>
            <edomvds>EPA</edomvds>
          </edom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>CLASSIFICA</attrlabl>
        <attrdef>Severity classification as identified by the EPA.</attrdef>
        <attrdefs>EPA</attrdefs>
        <attrdomv>
          <edom>
            <edomv>Marginal</edomv>
            <edomvd>Area has a design value of 0.121 up to 0.138 ppm</edomvd>
            <edomvds>EPA</edomvds>
          </edom>
          <edom>
            <edomv>Moderate</edomv>
            <edomvd>Area has a design value of 0.138 up to 0.160 ppm</edomvd>
            <edomvds>EPA</edomvds>
          </edom>
          <edom>
            <edomv>Serious</edomv>
            <edomvd>Area has a design value of 0.160 up to 0.180 ppm</edomvd>
            <edomvds>EPA</edomvds>
          </edom>
          <edom>
            <edomv>Severe 17</edomv>
            <edomvd>Area has a design value of 0.190 up to 0.280 ppm and has 17 years to attain</edomvd>
            <edomvds>EPA</edomvds>
          </edom>
          <edom>
            <edomv>Severe 15</edomv>
            <edomvd>Area has a design value of 0.180 up to 0.190 ppm and has 15 years to attain</edomvd>
            <edomvds>EPA</edomvds>
          </edom>
          <edom>
            <edomv>Extreme</edomv>
            <edomvd>Area has a design value of 0.280 ppm and above</edomvd>
            <edomvds>EPA</edomvds>
          </edom>
          <edom>
            <edomv>Submarginal</edomv>
            <edomvd>Kansas City was the only area classified submarginal, but it has been redesignated attainment. This category includes areas that violate the ozone standard and have a design value of less than 0.121 parts per million. This occurs when there is not a complete set of data so that the estimated design value is higher than the ozone standard exceedance rate of 1.0 per year even though the estimated design value is less than the level of the standard</edomvd>
            <edomvds>EPA</edomvds>
          </edom>
          <edom>
            <edomv>Other</edomv>
            <edomvd>Other classification</edomvd>
            <edomvds>EPA</edomvds>
          </edom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>Redesignat</attrlabl>
        <attrdef>Date of redesignation</attrdef>
        <attrdefs>EPA</attrdefs>
      </attr>
    </detailed>
    <overview>
      <eaover>Ozone (O3) is a photochemical oxidant and the major component of smog. While O3 in the upper atmosphere is beneficial to life by shielding the earth from harmful ultraviolet radiation from the sun, high concentrations of O3 at ground level are a major health and environmental concern. O3 is not emitted directly into the air but is formed through complex chemical reactions between precursor emissions of volatile organic compounds (VOC) and oxides of nitrogen (NOx) in the presence of sunlight. These reactions are stimulated by sunlight and temperature so that peak O3 levels occur typically during the warmer times of the year. Both VOCs and NOx are emitted by transportation and industrial sources. VOCs are emitted from sources as diverse as autos, chemical manufacturing, dry cleaners, paint shops and other sources using solvents. 

The reactivity of O3 causes health problems because it damages lung tissue, reduces lung function and sensitizes the lungs to other irritants. Scientific evidence indicates that ambient levels of O3 not only affect people with impaired respiratory systems, such as asthmatics, but healthy adults and children as well. Exposure to O3 for several hours at relatively low concentrations has been found to significantly reduce lung function and induce respiratory inflammation in normal, healthy people during exercise. This decrease in lung function generally is accompanied by symptoms including chest pain, coughing, sneezing and pulmonary congestion. 

Title 40, Part 50 of the Code of the Federal Regulations lists the ambient air quality standards for ozone.</eaover>
      <eadetcit>The 1 hour standard is incorporated within the Ozone dataset.</eadetcit>
    </overview>
  </eainfo>
  <distinfo>
    <distrib>
      <cntinfo>
        <cntorgp>
          <cntorg>Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)</cntorg>
          <cntper>Office of Geospatial Information Systems</cntper>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing and physical</addrtype>
          <address>1200 New Jersey Ave., SE</address>
          <city>Washington</city>
          <state>DC</state>
          <postal>20590</postal>
          <country>US</country>
        </cntaddr>
        <cntvoice>1 202 366 DATA</cntvoice>
        <cntemail>answers@bts.gov</cntemail>
      </cntinfo>
    </distrib>
    <resdesc>National Transportation Atlas Database (NTAD) 2013.</resdesc>
    <distliab>None</distliab>
    <stdorder>
      <digform>
        <digtinfo>
          <formname>ESRI Shapefile</formname>
          <formvern>2013</formvern>
          <filedec>No compression applied. However, if using digital transfer online option, note access instructions.</filedec>
          <transize>5.098</transize>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>http://www.bts.gov/programs/geographic_information_services/</networkr>
              </networka>
            </computer>
          </onlinopt>
          <offoptn>
            <offmedia>dvd</offmedia>
            <reccap>
              <recden>650</recden>
              <recdenu>megabytes</recdenu>
            </reccap>
            <recfmt>ISO 9660</recfmt>
          </offoptn>
        </digtopt>
      </digform>
      <fees>None</fees>
      <ordering>Call (202-366-DATA), or E-mail (answers@bts.gov) RITA/BTS to request the National Transportation Atlas Databases (NTAD) 2013 DVD. The NTAD DVD can be ordered from the online bookstore at www.bts.gov. Individual datasets from the NTAD can also be downloaded from the Office of Geospatial Information Systems website at http://www.bts.gov/programs/geographic_information_services/.</ordering>
    </stdorder>
    <availabl>
      <timeinfo>
        <sngdate>
          <caldate>20110101</caldate>
        </sngdate>
      </timeinfo>
    </availabl>
  </distinfo>
  <metainfo>
    <metd>20130425</metd>
    <metc>
      <cntinfo>
        <cntorgp>
          <cntorg>Research and Innovative Technology Administration's Bureau of Transportation Statistics (RITA/BTS)</cntorg>
          <cntper>Office of Geospatial Information Systems</cntper>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing and physical</addrtype>
          <address>1200 New Jersey Ave., SE</address>
          <city>Washington</city>
          <state>DC</state>
          <postal>20590</postal>
          <country>US</country>
        </cntaddr>
        <cntvoice>1 202 366 DATA</cntvoice>
        <cntemail>answers@bts.gov</cntemail>
      </cntinfo>
    </metc>
    <metstdn>FGDC Content Standard for Digital Geospatial Metadata</metstdn>
    <metstdv>FGDC-STD-001-1998</metstdv>
    <mettc>local time</mettc>
  </metainfo>
</metadata>