AFFECTED ENVIRONMENT
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SOILS AND GEOLOGY
This section describes the existing soils and geology along the project
corridor.
The geology of the Highway 62 West corridor is volcanic, largely resulting from
activity associated with the Mt. Mazama eruptions. This volcano released
andesitic lava and ash flows that were later covered by ash, pumice, and cinders
from subsequent eruptions (Warfield et al. 1999). Much of the Highway 62 West
corridor geology represents ashfall and ashflow deposits with some residuum and
colluvium present (NRCS 2002).
