Building Footprints based off data from 2008 for the buildings and 2010 vintage for UV SAL buildings in Cook County that are outside of the Chicago Open Data (which is various dates as collected) 2008 Cook County Lidar, UVM Spatial Analysis Lab 2010 Chicago Regional Land Cover (2008 Lidar building footprints were extracted using Esri software and UVM Spatial Analysis Lab building footprints were extracted/regularized using Esri software).