California Air Resources Board 2004 Almanac (web) Placer County Appendix D Mountain Counties Air Basin Population and VMT Table D-20 Parameter 1980 1985 1990 1995 2000 2005 2010 Population 12000 15100 20500 21800 22200 26500 30200 Avg. Daily VMT/1000 237 344 412 504 746 918 1034