Region 4 : In the ReVA context, a region is a large, multi-state geographic area corresponding to an EPA region such as the Mid-Atlantic, Northeast, Southeast, or Pacific Northwest regions within the United States
Regional Vulnerability Assessment (ReVA) Program (Terms Are Helpful For Understanding the Activities of ReVA), Glossary, Vasu Kilaru, USEPA-Research Triangle Park, NC, USA 2011. http://www.epa.gov/reva/glossary.html, (Vulnr Assess - Amer) {84}