1. A Database of Vapor Intrusion Characteristics of Industrial Buildings: Are They Different than Single Family Residences? Christopher Lutes, Keri Hallberg, Loren Lund and Mike Novak (CH2MHILL) Patricia Venable and Tanwir Chaudhry (NAVFAC EXWC, Port Hueneme, CA) Ignacio Rivera-Duarte (SSC-Pacific, San Diego, CA) and Donna Caldwell (NAVFAC-LANT, Norfolk, VA) Presented at AEHS 2015 EPA VI Workshop

2. 12 installations 13 sites, and 49 buildings Average age of buildings in the database is 55 Majority of these sites have depths to water < 10 ft PCE Concentration in Sub-slab Soil Gas vs. Indoor Air Sample Zone Averages

3. Example database fields: building footprint area, sample zone use, ype, subgradsoil te structures, interpolated maximum groundwater concentration under sample zone Primary release = historical release point i.e. UST, disposal pit p<0.001