9e1265d8-13c1-4563-a867-20a300aa6987 eng utf8 dataset dataset James Wickham U.S. Environmental Protection Agency, Office of Research and Development, Center for Public Health and Environmental Assessment 919.541.3077 109 TW Alexander Dr. Durham NC 27709 US wickham.james@epa.gov pointOfContact 2023-05-31 ISO 19139 Geographic Information - Metadata - Implementation Specification 2007 EPSG:4326 EJ and Impervious Cover 2023-01-09 publication Geographic analysis of impervious cover and demographic attributes by 2010 Census block group. Demographic attributes and Census block groups were downloaded from the EJScreen web page (www.epa.gov/ejscreen). EJScreen technical documentation is available at website; click on the technical information link on the landing page; the link of the documentation is in the center of the web page. NLCD2019 data for impervious cover were downloaded from www.mrlc.gov. The impervious cover for 2001 and 2019 in the NLCD2019 database were used in the analysis. The Census block groups downloaded from EJScreen were projected into Albers Conic Equal Area to match the NLCD2019 projection (Albers Conic Equal Area: central meridian=96.0 W; origin latitude=23.0 N; false easting=0.0; false northing=0.0; standard parallel 1=29.5 N; standard parallel 2=49.5 N; Geographic coordinate system=WGS84; WKID=4326) . U.S. Environmental Protection Agency. James Wickham U.S. Environmental Protection Agency, Office of Research and Development, Center for Public Health and Environmental Assessment 919.541.3077 109 TW Alexander Dr. Durham NC 27709 US wickham.james@epa.gov publisher United States United States place EPA Place Names 2015-01-31 publication 020:072 020:072 theme Federal Program Inventory 2013-09-16 publication Climate Land Climate Environment Land theme EPA GIS Keyword Thesaurus 2007-11-02 publication 010 digital spatial data GIS Image processing ImageryBaseMapEarthCover Land cover Land Use Land Cover Theme National Geospatial Data Asset U.S. Geological Survey (USGS) 010 digital spatial data GIS Image processing ImageryBaseMapEarthCover Land cover Land Use Land Cover Theme National Geospatial Data Asset NGDA U.S. Geological Survey (USGS) theme User 2020-11-23 publication None eng utf8 -127.700452 -66.103258 23.360434 51.42191 2020-11-25T00:00:00 Corner Coordinates (center of pixel, projection meters) Upper Left Corner: -2493045 meters(X), 3310005 meters(Y) Lower Right Corner: -177285 meters(X), 2342655 meters(Y) https://edg.epa.gov/data/public/ORD/EnviroAtlas/EJ_IC.zip download download dataset EJScreen attribute analyzed were percentage minority, percentage low income, percentage without a high school diploma, percentage linguistically isolated (difficulty with English), percentage of houses built before 1960, percentage over 64 years old, and percentage under 5 years old. Geographic patterns of these attributes were analyzed with respect to percentage impervious cover using a contingent probability model. Impervious cover attributes included in the analyses were percentage impervious cover in 2019 and percentage change in impervious cover between 2001 and 2019.