20230125 10100500 1.0 TRUE States State boundaries are derived from 2000 U.S. Census Bureau TIGER/Line generalized boundaries for state and state equivalent areas. <br/> <a href='https://edg.epa.gov/metadata/rest/document?id={DCB05F49-28E5-4B70-8E58-1A97FE2A4C82}&xsl=metadata_to_html_full' target='_blank'>Metadata</a> U.S. Census Bureau