| ASK THE
EXPERTS
| Air
and Environmental |
Russell E. Erbes, CCM, Senior Principal
Email: Russ
Erbes
Expertise: Russell Erbes, CCM, senior
principal, specializes in air quality and noise environmental
issues and has over 29 years experience in solving air
quality, hazardous materials and other environmental problems.
His experience covers an extremely wide variety of industries,
developers, landfills, universities, military installations,
airports, regulatory and policy agencies. Erbes has in-depth
experience in stationary as well as mobile sources and
traditional as well as air toxic emissions. His experience
also includes indoor air quality projects for a variety
of different office, hospital and industrial settings.
Erbes has practiced air quality in over 30 states and
several countries. He is a recognized author and lecturer. |
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| Geological
Engineering |
William C.B. Gates, Ph.D., P.E., P.G.
Email: Bill
Gates
Expertise: William C.B. Gates, Ph.D.,
P.E., P.G., is a senior consultant with Kleinfelder's
Technical Resource Center and has more than 35 years of
experience dealing with various engineering, geologic
and environmental problems worldwide, including: the United
States, Mexico, Central America and Germany. These problems
have covered a wide range of interrelated disciplines
attendant to geology, groundwater resources, solid waste
and hazardous waste, including hydrogeology, engineering
geology, fluvial geomorphology, geotechnical engineering,
rock mechanics, rock slope engineering, soils engineering,
environmental science and geological engineering/instrumentation/exploration.
Because of the worldwide distribution of these projects,
he has had exposure to diverse geological, engineering,
and regulatory problems. Dr. Gates has extensive experience
attendant to modeling and kinematic analysis of rock slopes
employing the following computer software packages: Rockware
Utilities, Rockpack III, Xstabl, and the Colorado Rockfall
Simulator. Inthe last two years Dr. Gates has been the
principal rockslope and landslide engineering and geomechanical
investigator for over 250 major rockslope engineering
and landslide projects. The projects include: On-Call
Geotechnical and Rockslope Engineering Services for the
Washington State Department of Transportation for over
260 sites; New Mexico State Department of Transportation
Interstate 25 highway realignment project, Raton, New
Mexico, and SR 70 Ruidoso, New Mexico; CALTRANS Project,
KarukViaduct Landslide, and SR 96, Humbolt County, California;
Fallert Bridge Landslide, Cowlitz County, Washington;
and pipe-jacking/tunneling in hard rock, San Jose, California.
In addition, Dr. Gates has demonstrated experience applying
such computer codes as Aquitest, Visual MODFLOW and FLOWPATH
to evaluate and model groundwater problems and design
dewatering systems. |
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| Water
Resources and Hydrogeology |
Christopher S. Johnson, RG, CHG
Email: Chris
Johnson
Expertise: : Christopher S. Johnson,
R.G., C.H.G., has more than 19 years of experience in
geology and hydrogeology. He is Chief Hydrogeologist and
assists with water resources projects throughout Kleinfelder's
territory. Johnson leads hydrogeologic assessments for
production well designs, supervises plans specification
preparation, supervises and reviews aquifer testing and
data analyses and supervises staff interpretation of geophysical
logs and geochemical evaluations. He specializes in geochemical
assessments for naturally–occurring contaminants
such as arsenic and uranium. He also manages well rehabilitation,
artificial recharge and dewatering assessment projects,
along with geologic and hydrogeologic studies and basin
analyses. |
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| Geotechnical
Engineering |
Ed Rinne, P.E.
Email: Ed
Rinne
Expertise: Ed Rinne, P.E., has over 35
years of experience in conducting and managing geotechnical
engineering studies throughout California, the western
United States and overseas. He serves as the Senior Consultant
for geotechnical projects throughout the company and is
responsible for firmwide development and quality assurance
of geotechnical engineering services. He has extensive
experience with dams, embankments, deep foundations, bridge
and waterfront construction, earthquake engineering, retaining
structures and soft soil sites. |
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| Engineering
Geology |
|
Bruce Hilton, R.G., C.E.G.
Email: Bruce
Hilton
Expertise: Bruce Hilton, R.G., C.E.G.,
has 25 years experience in engineering geology and the
applied geosciences, including soil and groundwater
contaminant assessment and remediation. He has practiced
in many of the western states. From forensic fissure
studies to 760 miles of High Speed Train GIS studies
and subdivisions, he has assisted federal agencies,
consulted to state regulators, and both public and private
clientele. Using many modern technologies including
GIS/GPS methods, remote sensing, drilling and sampling
methods, along with various geophysical applications,
Hilton has created innovative solutions for numerous
environmental and geotechnical situations.
In his role as the company-wide, Principal Engineering
Geologist, Mr. Hilton serves as a Corporate member of
the firm's Technical Resources Council as the Geologist.
As the TRC Engineering Geologist, he is responsible
for assisting all offices in identifying, winning, and
performing projects involving Engineering Geology. |
 |
Dick Short, P.E., G.E.
Email: Dick
Short
Expertise: Dick Short, P.E., is a registered
geotechnical engineer with 30 years experience in the
San Francisco Bay Area and northern California on a
wide range of public works and private projects. These
projects include bridges, roadways, rail spurs, freeways,
marine container and trucking terminals, pipelines,
water treatment facilities, emergency repair projects,
and numerous other public and commercial structures.
Short‘s experience includes construction oversight
and troubleshooting for over 2,000 projects. His expertise
lies in his experience in the design and construction
of all types of shallow and deep foundations including
drilled piers, concrete and steel piles, grouted Tubex
piles, mixed-in-place steel reinforced soil cement piles,
soil nailing, and grouted tie backs. Short has designed
and supervised the construction inspection and quality
control of over 60 pile supported structures including
over 10,000 piles of various types. He has designed
and overseen a wide variety of soil improvement techniques
including dynamic compaction, chemical treatment, geotextile
applications, stone columns, deep soil cement stabilization,
and conventional earthwork compaction. His experience
includes embankment slope stability analysis, settlement
analysis of compressible soils such as Bay mud, expansive
soil mitigation techniques, erosion control plans, flexible
and rigid pavements designs, concrete slabs-on-grade
performance evaluations, and landslide and foundation
distress repairs. |
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| Seismic
Engineering |
Zia Zafir, Ph.D., P.E., G.E., Senior
Seismic Engineer
Email: Zia
Zafir
Expertise: Zia Zafir, Ph.D., P.E., G.E.,
has more than 18 years of experience in the field of geotechnical
and earthquake engineering and research. Zafir has been
actively involved on seismic hazard evaluations and seismic
retrofit for renowned national and international projects.
In addition to California, he has been involved in seismic
design projects in Nevada, Oregon, Washington, Arizona,
New Mexico, Utah, Bangladesh, Mexico, and Russia. Some
of his significant projects include ground motions for
seismic retrofit of Golden Gate Bridge, seismic feasibility
studies for Tacoma Narrows Bridge, ground motion studies
for Jamuna River Bridge in Bangladesh, ground motion criteria
for two fissile material storage facilities in Russia,
Applegate Dam in Oregon, and Pier G at Port of Long Beach.
Zafir was also part of the project ATC-32 in which he
developed new ARS curves for Caltrans, which are included
in the 2004 Caltrans Seismic Design Criteria. In addition,
he has recently developed site-specific design ground
motions for an LNG facility in Baja California, Mexico.
Currently he is involved in developing ground motion criteria
for Chemical and Metallurgical Research facility at Los
Alamos National Laboratory in New Mexico. He has published
and presented more than twenty papers in international
journals and conferences. |
| Solid
Waste |
Jeff Dunn, Ph.D., P.E., G.E.
Email: Jeff
Dunn
Expertise: Jeff Dunn, Ph.D., P.E., G.E.,
has over 27 years experience as a geotechnical engineer
with major focus on solid waste and landfill design, remediation,
and construction. At Kleinfelder, he is leader of the
solid waste practice for the company and is responsible
for technical quality of Kleinfelder's solid waste practice
and program management. Dunn is nationally known for his
expertise in design and construction of landfill liner
and cover systems and particularly for his practical and
responsive solutions to field issues and problems. As
a specialist in geotechnical soil behavior he is highly
experienced and has a thorough understanding of characteristics
and associated performance issues for soil and geosynthetic
materials that correlate to successful landfill clean-up
and closure. He has performed in a Program or Project
Manager role on a wide variety of landfill and burn dump
projects including those for MSW, hazardous waste and
low-level mixed radioactive waste and is highly experienced
with remedial clean-up actions. Through his experience
he has also developed strong relationships with many regulatory
agencies including the Integrated Waste Management Board. |
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