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Geological Assessments
Seismic Hazards Assessment
Landslide and Liquefaction Analyses
Geologic Hazards Maps for Land-Use Planning
 Geologic
and Seismic Hazard Studies - CSA has been at the forefront
of geologic hazard assessments of hillside areas for three decades.
Representative projects conducted over the years by our team of
engineering geologists and geotechnical engineers range in size
and scope from relatively small, subdivision-sized investigations
to large projects involving tens to hundreds of square miles. In
the San Francisco Bay Area, we are well known for the large-scale
geologic maps we produced for the communities of Portola Valley,
Saratoga, Belmont, Woodside and Los Altos Hills, as well as the
Congress Springs Landslide Map produced for the County of Santa
Clara. Maps depicting relative hazards were prepared as companion
map folios for the Los Altos Hills, Portola Valley, Saratoga, Belmont,
and Congress Springs investigations. The hazard maps, together with
corresponding guidelines developed for each specific area, are utilized
on a regular basis to guide development in these areas, and have
significantly reduced the risk associated with building in hazardous
terrains. CSA also is a leader in the field of seismic hazards evaluations,
and has studied numerous faults under grants from the U.S. Geological
Survey. Completed fault studies include work on the Hayward fault,
Calaveras fault, Berrocal-Shannon-Monta Vista system, San Andreas
Fault zone, and Tularcitos fault zone. In recent years, we have
completed fault mapping, trenching and regional seismotectonic investigations
for proposed dams in Monterey, Contra Costa, and Calaveras Counties,
and fault investigations for proposed elementary schools and water
storage facilities located in close proximity to several active
fault zones.
"The primary role
of the geologist is to recognize the existence of phenomena before
trying to explain them"
- B.M. Keilhau, 1828
Also in this section:
Geological
Assessments
Engineering
Design
Geological
Engineering
Geotechnical Support
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