California Air Resources Board 2004 Almanac (web) Lassen County Table D-35 Appendix D Northeastern Plateau Air Basin Population and VMT Parameter 1980 1985 1990 1995 2000 2005 2010 Population 21800 24300 27700 28900 34150 39800 43400 Avg. Daily VMT/1000 397 450 609 721 720 813 931