Name: Environmental & Demographic Indicators Relationship

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Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:0 0 11 0;"><SPAN>The main data sources used to construct these data were: the Census, the EPA's EJ Index, CCRM, USGS's NLCD land cover data, and NOAA's SLOSH data. The SLOSH data was intersected with the four developed land cover layers of the NLCD data to provide estimates of the percentages of developed land that would be flooded in each block group. These block groups represent those that intersect with the Elizabeth River watershed shapefile provided by CCRM, which lie in the four counties considered in this analysis: Chesapeake City, Norfolk City, Portsmouth City, and Virginia Beach City. The final five variables in the table are the indexes created using Principal Components Analysis (PCA). The variables used in each PCA are the following:</SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN STYLE="font-weight:bold;"><SPAN>Combined demographic</SPAN></SPAN><SPAN><SPAN>= </SPAN></SPAN><SPAN><SPAN>“</SPAN></SPAN><SPAN><SPAN>pctmin","pctlowinc","pctlths", "pctlingiso","pctunder5","pctover64", "MedianStructureAge","DevelopedArea","MedianHHincome", "PublicAssistanceShare","NotInLaborForceShare","NoInternetShare", "AtLeastBachelorsShare","BlackShare","BlackHHShare", "IncomeBelowPovertyShare","RenterShare</SPAN></SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>40.8% of the variance was explained using first PC, which was used as the index score. That PC score was standardized against others within the Elizabeth River watershed using the EJ Screen methodology.</SPAN></SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN STYLE="font-weight:bold;"><SPAN>Combined environmental</SPAN></SPAN><SPAN><SPAN>= "EJ.DISPARITY.cancer.eo.EJLocal","EJ.DISPARITY.resp.eo.EJLocal", "EJ.DISPARITY.dpm.eo.EJLocal","EJ.DISPARITY.pm.eo.EJLocal", "EJ.DISPARITY.o3.eo.EJLocal","EJ.DISPARITY.traffic.score.eo.EJLocal "EJ.DISPARITY.pctpre1960.eo.EJLocal","EJ.DISPARITY.proximity.rmp.eo.EJLocal", "EJ.DISPARITY.proximity.tsdf.eo.EJLocal","EJ.DISPARITY.proximity.npl.eo.EJLocal", "EJ.DISPARITY.proximity.npdes.eo.EJLocal"</SPAN></SPAN></P><P STYLE="margin:0 0 11 0;"><SPAN><SPAN>35.4% </SPAN></SPAN><SPAN><SPAN>of the variance was explained using first PC, which was used as the index score. That PC score was standardized against others within the Elizabeth River watershed using the EJ Screen methodology.</SPAN></SPAN></P><P><SPAN /></P></DIV></DIV></DIV>

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