Basement 08 : Any area of the building, including any sunken room or sunken portion of a room, having its floor below ground level (subgrade) on all sides
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Federal Emergency Management Agency FEMA, U.S. Department of Homeland Security DHS, FloodSmart.gov (The Official Site of National Flood Insurance Program NFIP), Resources: Glossary, Washington, DC, USA 2015. www.floodsmart.gov/floodsmart/pages/glossary_A-I.j sp, (ND/ Flood - Amer) {999}