20200924 11172400 1.0 TRUE 2012 Contours Index (.shp) Lidar Data Products for Grand Junction, CO collection area including a 3m DEM, 2ft Contours, Voids in the Ground Surface >= 10 sq meters, Voids in the 1st Return Surface >= 8 sq meters, Percent Slope, Degree Slope, and Tiled Intensity Rasters.