In May, 1994, Mr. Lauer
began work as a project geophysicist for Earth Dynamics. His primary
duties include conducting field projects, reducing geophysical data and
reporting. Recent completed projects include: 1) Marine acoustic
sub-bottom profiling, marine GPR, marine electrical resistivity were used
to determine sub-bottom geology for foundation design of a 36” diameter
interceptor sewer in Oswego Lake, OR. 2) Marine seismic reflection,
refraction, and marine electrical resistivity were used to determine
sub-bottom geology for a proposed pier at the Moss Landing Marine Labs,
CA. 3) Supervising field work on a marine geophysical survey at Bonneville
Dam for the U.S. Army Corps of Engineers. Bathymetry, acoustic sub-bottom
profiling, and side-scan sonar were used to identify boulders near
proposed Juvenile Fish Bypass structures. 4) Several high-resolution
seismic refraction surveys to determine bedrock topography in the
Portland, OR area. 5)
Over 11,000 lineal feet of two-dimensional electrical resistivity
profiling at basalt quarries to determine the extent of economic rock. 6)
Two-dimensional electrical resistivity profiling, GPR and electromagnetic
exploration along over 7,000 lineal feet of the alignment for the Columbia
Slough Consolidation Conduit in Portland, OR to determine subsurface
conditions prior to excavation with a tunnel boring machine. 7) Downhole
seismic and refraction microtremor
measurements at several sites in Oregon to determine compressional and shear wave velocity as a function of depth. These data
are needed to help predict the seismic response of existing and proposed
structures to potential earthquakes. 8) Electromagnetic and magnetic
surveys to determine the locations of buried drums at a superfund site. 9) Vibration and pressure monitoring
during lake tap blasting and intake structure modifications at Cougar Dam,
OR. 10) Vibration monitoring during expansion of Highway US-26 in
Portland, OR to verify that the contractor is in compliance with
construction specifications; and 11) Vibration monitoring to certify a
site for a vibration sensitive micro-electronics company.
Prior to working at Earth Dynamics, Mr. Lauer was a graduate student
at the University of Montana. While a graduate student, Mr. Lauer worked
for several clients as an exploration geologist. He conducted geologic
mapping and mineral explorations for the Confederated Salish and Kootenai
Tribes; mineral inventory site evaluations for the U.S. Bureau of Mines;
core logging for Noranda Exploration; and clay mineralogy and X-ray
diffraction analysis at the University of Montana laboratory.
Mr. Lauer also has experience using electronic survey equipment,
conducting mass spectrometer analysis, monitoring and logging exploratory
drilling projects, and preparing core samples for laboratory testing.