proj4.defs("EPSG:6843","+proj=omerc +no_uoff +lat_0=44.75 +lonc=-124.05 +alpha=5 +gamma=5 +k=1 +x_0=-299999.9999988 +y_0=-4600000.00001208 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=ft +no_defs +type=crs");