proj4.defs("EPSG:3739","+proj=tmerc +lat_0=40.5 +lon_0=-110.083333333333 +k=0.9999375 +x_0=800000.00001016 +y_0=99999.9999898399 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=us-ft +no_defs +type=crs");