div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: FEMAgov Federal Emergency Management Agency · 2 3 feet above Highest Existing Adjacent Grade HEAG at the building site The HEAG is defined as the highest natural elevation src=https:reader036vdocumentsusreader036viewer20220711115fe610a034564626ba591e75html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdiv