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HANS VAN DE VRUGT, RG, CEG, RGP
Principal Geophysicist
EDUCATION
Master of
Science, Geological Sciences, 1995, San Diego
State University,
San Diego,
California
Bachelor of
Science, Geological Sciences, 1988, San Diego
State University,
San Diego,
California
REGISTRATIONS
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Registered
Geologist, California,
RG 6174
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Registered Geophysicist,
California, RGP
1012
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Certified
Engineering Geologist, California,
CEG 1990
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Registered Geologist,
Arizona, RG
33259
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CERTIFICATIONS
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ACI
Concrete Field Technician Certification
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ICBO
Special Inspector, Reinforced Concrete Certification, No. 08 59806-88
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OSHA 40-Hour Health and
Safety Training (with annual updates)
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PROFESSIONAL EXPERIENCE AND RESPONSIBILITIES
Mr. van de Vrugt's experience
includes performing and managing geophysical studies as well as
geotechnical design evaluations.
He has over 15 years of experience in conducting geologic,
geophysical, and geotechnical engineering evaluations for such projects
as schools, medical centers, convention centers, treatment plants,
pipelines, transportation corridors, resorts, commercial and residential
developments, and landfills. Specific geophysical project experience
includes:
·
Leo Carrillo
State Beach,
Malibu
California: Geophysicist for the proposed installation of a Geotube,
intended to mitigate future erosion of site improvements located along
the State beach. Services provided included the performance of seismic
refraction surveys, electrical resistivity
soundings, and ground penetrating radar profiles in the area of the
proposed Geotube; data compilation; and
preparation of a written report. The purpose of the geophysical surveys
was to characterize the subsurface materials and to delineate the depth
to competent materials.
·
USEPA Unexploded Ordnance Removal
Site, Southern California: Geophysicist for survey services and geophysical analysis for the
evaluation of a 13-acre portion of a suspected unexploded ordinance (UXO)
property located within the Inland Empire region of California. The U.S.
Army used the subject site and an additional 213 adjoining acres during
World War II (WWII) as a munitions storage and transfer facility. Following WWII, and from the mid-1950s
to about 1993, private industry used portions of the area for the
storage, manufacturing, assembling, and testing of a variety of
explosives and pyrotechnic materials (fireworks). Services included
conducting initial/reconnaissance level surveys using highly sensitive
hand held metal detectors to delineate any surface/near surface UXO.
Following the initial survey, a highly detailed survey was conducted
using EM 61 and a total field magnetometer. Data were processed in the
field. The results of the survey uncovered several UXO which were later
detonated by the San Bernardino Bomb Squad.
·
Desert
Basin
Generating Station, Casa Grande,
Arizona: Geophysicist during a geotechnical
evaluation for the proposed 500-megawatt, natural gas-fired Desert Basin
Generating Station. The $263 million dollar project will produce wholesale
electricity for sale to large energy users throughout
Arizona
and the western United
States. The plant will be located on a
20-acre tract of land just inside the northwestern city limits of Casa
Grande. The purpose of the
evaluation was to develop geotechnical data to be used by the
design/build team in the preparation of their cost estimates. Field work included the performance of downhole seismic surveys. Both P- and S-waves were generated and
recorded in order to develop engineering parameters for the design of the
plant.
·
Combat
Training Pool/Tank, Miramar Marine Corps Air Station, San Diego,
California: Geophysicist
conducting ground penetrating radar (GPR) in order to locate the presence
of voids beneath and adjacent to the pool shell, as a result of long term
pool leakage. Numerous GPR transects were conducted along the sides of
the pool and adjacent to other site improvements near the swimming pool.
The results of the study were used in formulating an appropriate repair
plan for the swimming pool and associated improvements.
·
Marine
Corps Base, Camp
Pendleton,
Oceanside, California: Geophysicist during the performance
of environmental site assessment of 78 former underground storage tank
(UST) sites at the Camp Pendleton Marine Corps Base. The purpose of the
geophysical surveys was to delineate the former location of USTs and existing utilities so that an appropriate
boring location plan could be formulated. The surveys included the use of
magnetics, GPR, electromagnetics,
and line tracers.
·
Palmilla Golf Course, Palmilla
Resort, San Jose del Cabo,
Mexico: Geophysicist providing services as
part of a groundwater study for Arroyo Palmilla
and Arroyo Seco located within the Palmilla Golf Course at the Palmilla
Resort. The purpose of the study was to assess the presence and
potential quantity of useable groundwater for irrigation of the golf
course. Services included the review of background geologic and
geophysical data, performance of electrical resistivity
surveys and seismic refraction profiles within, and across the arroyos,
data interpretation, and preparation of a geophysical data report.
The results were used in the design of a drilling and well installation
program.
·
State Route 163 Widening,
Clark County, Nevada: Geophysicist providing geotechnical
consulting services in conjunction with the widening of a three-mile long
segment of State Route 163 in the
Newberry Mountains
near Laughlin. Services included
the performance of seismic refraction studies to evaluate the rippability characteristics of the on-site rock
materials in the proposed area of widening, the rock quality in Bridge
Canyon for a planned abutment, and
the depth to and quality of bedrock near Hiko
Springs for a planned retaining wall.
The study involved the collection of 8,970 lineal feet of data
along 64 seismic refraction survey lines.
Seismic profiles included lines of 100 feet long for proposed
shallow cuts (10-20 feet), 200 feet long for intermediate cuts (20-40
feet), and 300 feet long for deep cuts (40-60 feet).
·
City of Poway Blue
Sky Education Center,
Poway,
California: Geophysicist during geotechnical
engineering services for the proposed Blue Sky Education Center
Project. The proposed facility is
located east of Espola Road, north of
the intersection with Green Valley Truck Trail. Project construction
includes an approximately 6,000 square foot interpretive center and
associated retaining walls, utilities, parking areas and outdoor
recreational facilities. Services included mapping the site geology,
performance of seismic refraction surveys; and compilation and analysis
of the data obtained. The purpose of the study was to assess depth to
bedrock and rippability of the onsite
materials. The results of the evaluation were presented in an illustrated
report.
·
MTDB Rail Yard Expansion, Phase
III, San Diego,
California: Geophysicist providing geophysical
services during a geotechnical evaluation for the proposed MTDB Rail Yard
Expansion Project. The proposed
project involves construction of a track expansion area, a control tower,
and a paint shop building at the existing rail yard. Geophysical services
included review of available utility plans, mapping of service
features/influences, performance of GPR and electromagnetic surveys, and
compilation and analysis of the data obtained. The purpose of these
services was to locate underground utilities and other below ground
structures that may interfere with the excavation of exploratory borings.
·
Holmes and Hawthorne
Elementary Schools, Geophysical
Surveys, San Diego, California: Geophysicist during the evaluation of
underground utilities at the Holmes and
Hawthorne Elementary
Schools. Purpose of the study was to create
as-built drawings of underground utilities. Ground penetrating radar
(GPR), electromagnetic and magnetic surveys were conducted in order to
locate the presence of utilities.
PROFESSIONAL AFFILIATIONS
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American Geophysical Union
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Seismology Society of America
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American Concrete Institute
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San Diego Association of Geologists
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International Conference of
Building Officials
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FOREIGN LANGUAGE
Dutch
E-mail me at:
hvandevrugt@southwestgeophysics.com
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