proj4.defs("EPSG:3421","+proj=tmerc +lat_0=34.75 +lon_0=-115.583333333333 +k=0.9999 +x_0=200000.00001016 +y_0=8000000.00001016 +ellps=GRS80 +nadgrids=AB_CSRS.DAC +units=us-ft +no_defs +type=crs");