<metadata>
  <idinfo>
    <citation>
      <citeinfo>
        <origin>Montana State Library</origin>
        <pubdate>20120607</pubdate>
        <title>Estimated Relative Septic System Density, Montana, 2010</title>
        <pubinfo>
          <pubplace>Helena, MT</pubplace>
          <publish>Montana State Library</publish>
        </pubinfo>
        <onlink>http://ftp.geoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Shapefiles/Septic_Density_2010.zip</onlink>
      </citeinfo>
    </citation>
    <descript>
      <abstract>These data are a re-classification of the population density of Census Blocks into estimated septic system densities of H, M, or L (High, Medium, or Low).

Areas within incorporated cities and towns are reclassified as "C", which means that the area is assumed to have a municipal waste disposal system rather than individual septic systems.

High density is defined as being areas with over 750 persons per square mile.  Medium density is defined as being areas with 125 to 750 persons per square mile.  Low density is defined as being areas with less than 125 persons per square mile.</abstract>

      <purpose>The Federal Safe Water Drinking Act requires states to implement Source Water Assessment Programs that analyze existing and potential threats to the quality of the states' public water supplies.  The Montana Source Water Protection Program (SWPP) has complied with this by publishing source water delineation and assessment reports for each public water supply.  A required element of each assessment is an estimate of the septic system density in the source region.  The State Library developed these data under the guidance of the SWPP and published it in the State Library Digital Atlas application so that SWPP personell and the public could view a map of the septic system density around any public water supply.</purpose>
    </descript>
    <timeperd>
      <timeinfo>
        <sngdate>
          <caldate>20100401</caldate>
        </sngdate>
      </timeinfo>
      <current>ground condition</current>
    </timeperd>
    <spdom>
      <bounding>
        <westbc>-116.06</westbc>
        <eastbc>-104.03</eastbc>
        <northbc>49.01</northbc>
        <southbc>44.35</southbc>
      </bounding>
    </spdom>
    <keywords>
      <theme>
        <themekt>ISO 19115 Topic Categories</themekt>
        <themekey>environment</themekey>
        <themekey>health</themekey>
      </theme>
      <theme>
        <themekey>Septic Density</themekey>
        <themekey>Septic System Density</themekey>
        <themekey>Septic Systems</themekey>
        <themekey>SepDens</themekey>
        <themekey>Source Water Delineation and Assement Reports</themekey>
        <themekey>Source Water Assessments</themekey>
        <themekey>Source Water Delineations</themekey>
      </theme>
      <place>
        <placekey>Montana</placekey>
      </place>
    </keywords>
    <accconst>None</accconst>
    <useconst>These data are for general planning purposes only.  Census Block boundaries are arbitrary -- large Census Blocks may contain small areas of concentrated population and high septic system density that are not shown here.

This data set is provided "as-is" without warranty of any kind. The DEQ makes no representations or warranties whatsoever with respect to the accuracy or completeness of this data set and assumes no responsibility for the suitability of this data set for a particular purpose; and DEQ will not be liable for any damages incurred as a result of errors in this data set.

The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.</useconst>
    <ptcontac>
      <cntinfo>
        <cntorgp>
          <cntorg>Montana State Library</cntorg>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing</addrtype>
          <address>P.O. Box 201800</address>
          <city>Helena</city>
          <state>Montana</state>
          <postal>59620-1800</postal>
        </cntaddr>
        <cntvoice>406-444-5354</cntvoice>
        <cnttdd>406-444-4799</cnttdd>
        <cntfax>406-444-0266</cntfax>
        <cntemail>geoinfo@mt.gov</cntemail>
      </cntinfo>
    </ptcontac>
  </idinfo>
  <dataqual>
    <lineage>
      <srcinfo>
        <srccite>
          <citeinfo>
            <origin>U.S. Census Bureau</origin>
            <pubdate>2011</pubdate>
            <title>2010 Census Blocks with Population Data</title>
            <pubinfo>
              <pubplace>Helena, MT</pubplace>
              <publish>Montana State Library</publish>
            </pubinfo>
            <onlink>http://ftp.geoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Collections/Census/cblock2010.zip</onlink>
          </citeinfo>
        </srccite>
        <srcscale>100000</srcscale>
        <srctime>
          <timeinfo>
            <sngdate>
              <caldate>20100401</caldate>
            </sngdate>
          </timeinfo>
          <srccurr>ground condition</srccurr>
        </srctime>
        <srccontr>This is the source of the 2010 Census block population density data that were re-classified as estimated septic system density.</srccontr>
      </srcinfo>
      <srcinfo>
        <srccite>
          <citeinfo>
            <origin>Montana State Library</origin>
            <pubdate>2011</pubdate>
            <title>Montana Incorporated Places and Census Designated Places</title>
            <pubinfo>
              <pubplace>Helena, Montana</pubplace>
              <publish>Montana State Library</publish>
            </pubinfo>
            <onlink>http://ftp.geoinfo.msl.mt.gov/Data/Spatial/MSDI/AdministrativeBoundaries/MontanaIncorporatedCitiesTowns.zip</onlink>
          </citeinfo>
        </srccite>
        <srctime>
          <timeinfo>
            <sngdate>
              <caldate>2011</caldate>
            </sngdate>
          </timeinfo>
        </srctime>
        <srccontr>This is the source of the incorporated places used to designate the "C" areas presumed to have municipal wastewater systems.</srccontr>
      </srcinfo>
      <procstep>
        <procdesc>Add an item to a copy of the 2010 Census Block layer and calculate the septic density value as either H, M, or L according to the population density column.  Dissolve the polygons on septic density and county to eliminate lines between areas with the same population density in each county.</procdesc>
        <procdate>2011</procdate>
      </procstep>
      <procstep>
        <procdesc>Edit the Butte/Silver Bow and Anaconda-Deer Lodge polygons to represent the built-up area of those cities.  Overlay the edited layer on the dissolved septic density layer to insert the "C" areas.</procdesc>
        <procdate>2011</procdate>
      </procstep>
    </lineage>
  </dataqual>
  <spdoinfo>
    <ptvctinf>
      <sdtsterm>
        <sdtstype>G-polygon</sdtstype>
        <ptvctcnt>8294</ptvctcnt>
      </sdtsterm>
    </ptvctinf>
  </spdoinfo>
  <spref>
    <horizsys>
      <planar>
        <mapproj>
          <mapprojn>NAD 1983 StatePlane Montana FIPS 2500</mapprojn>
          <lambertc>
            <stdparll>45.0</stdparll>
            <stdparll>49.0</stdparll>
            <longcm>-109.5</longcm>
            <latprjo>44.25</latprjo>
            <feast>600000.0</feast>
            <fnorth>0.0</fnorth>
          </lambertc>
        </mapproj>
        <planci>
          <plandu>meter</plandu>
        </planci>
      </planar>
      <geodetic>
        <horizdn>D North American 1983</horizdn>
        <ellips>GRS 1980</ellips>
        <semiaxis>6378137.0</semiaxis>
        <denflat>298.257222101</denflat>
      </geodetic>
    </horizsys>
  </spref>
  <eainfo>
    <detailed>
      <enttyp>
        <enttypl>Septic_Density_2010</enttypl>
      </enttyp>
      <attr>
        <attrlabl>FID</attrlabl>
        <attrdef>Internal feature number</attrdef>
      </attr>
      <attr>
        <attrlabl>Shape</attrlabl>
        <attrdef>Feature geometry</attrdef>
      </attr>
      <attr>
        <attrlabl>SEPTDEN</attrlabl>
        <attrdef>Septic system density classification</attrdef>
        <attrdomv>
          <edom>
            <edomv>C</edomv>
            <edomvd>Incorporated area, presumed to have a municipal septic system</edomvd>
          </edom>
          <edom>
            <edomv>H</edomv>
            <edomvd>High Septic Density, with 2010 population density greater than 750 persons per square mile</edomvd>
          </edom>
          <edom>
            <edomv>M</edomv>
            <edomvd>Medium Septic Density, with 2010 population density between 125 and 750 persons per square mile</edomvd>
          </edom>
          <edom>
            <edomv>L</edomv>
            <edomvd>Low Septic Density, with 2010 population density less than 125 persons per square mile</edomvd>
          </edom>
        </attrdomv>
      </attr>
      <attr>
        <attrlabl>COUNTY</attrlabl>
        <attrdef>Name of the county containing the feature</attrdef>
      </attr>
    </detailed>
  </eainfo>
  <distinfo>
    <distrib>
      <cntinfo>
        <cntorgp>
          <cntorg>Montana State Library</cntorg>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing</addrtype>
          <address>PO Box 201800</address>
          <city>Helena</city>
          <state>MT</state>
          <postal>59620-1800</postal>
        </cntaddr>
        <cntvoice>406-444-5354</cntvoice>
        <cnttdd>406-444-4799</cnttdd>
        <cntfax>406-444-0266</cntfax>
        <cntemail>geoinfo@mt.gov</cntemail>
      </cntinfo>
    </distrib>
    <resdesc>Downloadable Data</resdesc>
    <distliab>These data are for general planning purposes only.  Census Block boundaries are arbitrary -- large Census Blocks may contain small areas of concentrated population and high septic system density that are not shown here.

This data set is provided "as-is" without warranty of any kind. The DEQ makes no representations or warranties whatsoever with respect to the accuracy or completeness of this data set and assumes no responsibility for the suitability of this data set for a particular purpose; and DEQ will not be liable for any damages incurred as a result of errors in this data set.

The Montana State Library provides this product/service for informational purposes only. The Library did not produce it for, nor is it suitable for legal, engineering, or surveying purposes. Consumers of this information should review or consult the primary data and information sources to ascertain the viability of the information for their purposes. The Library provides these data in good faith but does not represent or warrant its accuracy, adequacy, or completeness. In no event shall the Library be liable for any incorrect results or analysis; any direct, indirect, special, or consequential damages to any party; or any lost profits arising out of or in connection with the use or the inability to use the data or the services provided. The Library makes these data and services available as a convenience to the public, and for no other purpose. The Library reserves the right to change or revise published data and/or services at any time.</distliab>
    <stdorder>
      <digform>
        <digtinfo>
          <formname>ESRI Shapefile</formname>
        </digtinfo>
        <digtopt>
          <onlinopt>
            <computer>
              <networka>
                <networkr>http://ftp.geoinfo.msl.mt.gov/Data/Spatial/NonMSDI/Shapefiles/Septic_Density_2010.zip</networkr>
              </networka>
            </computer>
          </onlinopt>
        </digtopt>
      </digform>
    </stdorder>
  </distinfo>
  <metainfo>
    <metd>20150824</metd>
    <metc>
      <cntinfo>
        <cntorgp>
          <cntorg>Montana State Library</cntorg>
        </cntorgp>
        <cntaddr>
          <addrtype>mailing</addrtype>
          <address>P.O. Box 201800</address>
          <city>Helena</city>
          <state>Montana</state>
          <postal>59620-1800</postal>
        </cntaddr>
        <cntvoice>406-444-5354</cntvoice>
        <cnttdd>406-444-4799</cnttdd>
        <cntfax>406-444-0266</cntfax>
        <cntemail>geoinfo@mt.gov</cntemail>
      </cntinfo>
    </metc>
    <metstdn>FGDC Content Standard for Digital Geospatial Metadata</metstdn>
    <metstdv>FGDC-STD-001-1998</metstdv>
    <mettc>local time</mettc>
  </metainfo>
  <Esri>
    <PublishedDocID>{fe2997d9-4157-4415-990b-f97fc0e6cc77}</PublishedDocID>
  </Esri>
</metadata>
