These documents describe the Biogenic Emission Inventory System (BEIS), which estimates volatile organic compound (VOC) emissions from vegetation and nitric oxide (NO) emissions from soils. See References for a set of BEIS-related references from the period 1992-2009. See Pouliot and Pierce (2009) for a description of BEIS 3.14. See Vukovich and Pierces (2002) for a description of BEIS 3.09.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.