div class=ts-pagebuttonPage 1button div class=ts-image amp-img class=ts-thumb alt=Page 1: EPA Form 3520-1pdf - US Customs and Border ProtectionForm+3520 · written authorization from EPA Customs may request EPA review of importer documentation and eligibility for src=https:reader031vdocumentsmxreader031viewer20220215015a9f3c6f7f8b9a0d158c97d5html5thumbnails1jpg width=142 height=106 layout=responsive amp-img divdivdiv class=ts-pagebuttonPage 2button div class=ts-image amp-img class=ts-thumb alt=Page 2: EPA Form 3520-1pdf - US Customs and Border ProtectionForm+3520 · written authorization from EPA Customs may request EPA review of importer documentation and eligibility for src=https:reader031vdocumentsmxreader031viewer20220215015a9f3c6f7f8b9a0d158c97d5html5thumbnails2jpg width=142 height=106 layout=responsive amp-img divdiv