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Hydrogeology / Geohydrology Expert Witnesses

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Randy D. Horsak, PE
Environmental Forensics Expert
PO Box 941735
Houston TX 77094
USA
phone: 281-752-6700
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Randy D. Horsak, PE is a scientist and registered Professional Engineer with more than 40 years of experience in all phases of Environmental Science and Engineering. President of 3TM Consulting, LLC, Mr. Horsak provides consulting in the areas of environmental engineering, geology and hydrogeology, ecology, land use, human and ecological risk assessment, and remediation and decontamination.

Litigation Support - Mr. Horsak supports attorneys for both Plaintiff and Defense. His clients include industrial and commercial companies, attorneys, land owners and realtors, toxicologists and medical doctors, and other consultants.

Environmental Projects Including:
  • Air Pollution
  • Ambient Air Quality Testing
  • Noise
  • Soil and Sediment
  • Groundwater and Surface Water
  • Water Treatment and Purification
  • Contaminated Dust
  • Ecosystems
  • Sites and Facilities
    • Abandoned Sites
    • Hazardous Waste Management Facilities
    • Refineries and Chemical Plants
    • Fossil and Nuclear Power Plants
    • Geothermal Energy Plants
  • Manufacturing and Commercial Facilities
  • Pipelines
  • Power Transmission Lines
  • Oil and Gas Exploration and Production
  • Public and Private Properties
  • View Mr. Horsak's Consulting Profile.
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    David Wilshaw, MS, PG
    President
    P.O. Box 783547
    Winter Garden FL 34778
    USA
    phone: 407-342-7737
    David Wilshaw, MS, PG has over 33 years of experience in Engineering Geology, Geotechnics, Hydrogeology and Geoenvironmental assessments. Established in 2012, his company Britannia Solutions LLC has continuously provided Sinkhole Neutral Evaluation and expert geological opinions to insurance carriers, private individuals, corporations and their respective legal advisers. Mr. Wilshaw offers services as a professional geologist and expert witness with respect to disputed sinkhole insurance claims and many other specialized areas of engineering geology, specifically Slope Failures, Underground Mining Subsidence and the Adequacy of Ground Investigations in relation to claims under construction contracts.

    David Wilshaw has been a Florida DFS-certified Neutral Evaluator under §627.7074 Florida Statutes since 2011. He is licensed as a Professional Geologist in Florida and Tennessee and is registered as a Chartered Geologist and Fellow of the Geological Society in the United Kingdom. He has been Adjunct Professor of Earth Science since 2015. In the last 8 years, he has been the statutory Professional Geologist retained under s.627.707 Florida Statutes for over 850 cause of subsidence investigations, in relation to sinkhole loss claims across Florida, from the Panhandle to the Florida Keys.

    Litigation Services Include:
    • Testifying Expert at Deposition over 120 times.
    • Testifying Expert at Trial over 30 times.
    • Neutral Evaluation of over 135 Disputed Sinkhole Insurance Claims in accordance with Section 627.7074 Florida Statutes
    • Peer review and expert opinion to defense and plaintiff attorneys on over 2,000 disputed claims for sinkhole loss
    View Consulting Profile.
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    James A. Jacobs, PG, CHG, CPG
    229 Tewksbury Ave.
    Point Richmond California 94801
    USA
    phone: 510-590-1098
    fax: 510-232-2823
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    James A. Jacobs, PG, CHG, CPG, has over 30 years of experience as a Geologist / Hydrogeologist and licensed contractor focused on answering geologic, environmental impairment, and forensic questions. He is a certified hydrogeologist in California and Washington and a Professional Geologist in California and several other states.

    A Fulbright Senior Scholar with 4 awards in environmental engineering and science, his projects relate to collecting, describing, and analyzing Soil, Rock, Groundwater, Vapor, and Stormwater samples, summarizing the data and creating useful technical information and cost recovery statements for decision makers or settlements. His other projects relate to peer review and contractor evaluation projects.

    Mr. Jacobs has provided litigation services in the investigation and analysis of cases involving contamination by hydrocarbon and solvent spills and leaks, erosion, flooding, and related issues. He has provided testimony assisting with many settlement conferences. Mr. Jacobs is qualified to testify in municipal, state, and Federal courts.

    Litigation Support and Expert Witness:
    • Perform litigation and technical support for various environmental and engineering cases from evaluating remediation history to well damage to erosion control
    • Estimate reasonable and necessary remedial costs for settlement conferences
    • Serve as an objective peer reviewer
    • Expert witness testimony on environmental cases
    Since 2002, Mr. Jacobs has been an elected director of two public agencies, a local sewer district, and a community services district. As such he is interested in I&I issues and sewer gas and volatile contaminant vapor intrusion into indoor air spaces via ineffective vapor seals on fixtures or dry P-traps in buildings. He performs cost allocations for environmental litigation, and also provides oil and gas production verification.

    View James Jacobs' Consulting Profile.
    James A. Jacobs, et. al (eds.)
    Put together by a team of scientists, engineers, regulators, and lawyers, the Chromium(VI) Handbook consolidates the latest literature on this topic. The broad scope of this book fills the need for a comprehensive resource on chromium(VI), improving the knowledge of this contaminant at a time when the extent and degree of the problem is still being assessed. It addresses naturally occurring and anthropogenic sources, geology and geochemistry, toxicity, treatment, regulatory issues and legal cases, and recommendations.
    James A. Jacobs, et al
    Provides the tools needed to analyze and solve acid drainage problem. Featuring contributions from leading experts in science and engineering, this book explores the complex biogeochemistry of acid mine drainage, rock drainage, and acid sulfate soils. It describes how to predict, prevent, and remediate the environmental impact of acid drainage and the oxidation of sulfides, offering the latest sampling and analytical methods. Moreover, readers will discover new approaches for recovering valuable resources from acid mine drainage, including bioleaching.
    James A. Jacobs, et al
    The definitive guide to petroleum hydrocarbon fuel spill and leak causes, prevention, response, and cost recovery.It highlights the complex nature of petroleum hydrocarbon fuel extraction methods, the unintended consequences when disasters occur, spill behavior, and environmental impact mitigation. This practical resource discusses engineering techniques; long-term biological and environmental effects; dealing with insurance claims, litigation, and legislation in overlapping jurisdictions; and much more.
    James A. Jacobs, et. al (eds.)
    Written by an expert team of scientists, engineers, and toxicologists, MTBE: Effects on Soil and Ground-Water Resources provides complete in-depth coverage of the assessment and potential remediation strategies of methyl tertiary-butyl ether (MTBE).
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    Stephen R. Henshaw, PG, President & CEO
    Jeff Carnahan, LPG, Vice President & CTO
    602 N. Capitol Avenue
    Indianapolis IN 46204
    USA
    phone: 866-888-7911
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    EnviroForensics® is the leading Environmental Engineering company in the country addressing environmental liabilities and finding funding by locating and bringing to your defense old insurance policies. EnviroForensics® has pioneered and perfected the utilization of Comprehensive General Liability insurance policies as a resource to pay for the high costs associated with Soil and Groundwater Investigations, Remediations, and Legal Defense.

    Litigation Support –EnviroForensics®' tenured team of experts, ranging from defense attorneys to plaintiff attorneys, have served the legal community on over 100 matters. They investigate and provide defensible data to lawyers who must meet the demands and requirements of litigation and settlement, insurance claims coverage, and governmental regulations.

    EnviroForensics® provides environmental assessment and due diligence services for commercial and residential developers, property management companies, real estate investment trusts, brownfield developers, financial institutions, law firms, and governmental agencies.

    EnviroForensics® has provided testifying and non-testifying expertise on the following issues:
    • Geology
    • Geochemistry
    • Soil and Groundwater Investigations
    • Environmental Risk Assessments
  • Environmental Engineering
  • Vapor Intrusion
  • Environmental Impact Studies
  • Clean Water Act Violations
  • Stephen Henshaw Environmental Forensics Expert PhotoStephen R. Henshaw, PG, President, CEO, serves as client manager and technical manager on numerous high profile and complex projects involving soil and groundwater quality impacts, permitting, and hazardous waste handling and management practices. He provides technical direction and supervises a staff of geologists, engineers, hydrogeologists, and scientists on projects associated with site characterization, remedial design, remedial implementation, waste-to-energy, system operation, facility management, document management, and litigation support.

    Mr. Henshaw has over 30 years of experience, specializing in asset management, legal and forensic support, regulatory compliance, soil and groundwater investigations, waste-to-energy, planning and permitting, and the design and operation of remediation systems, human health and ecological risk assessments, and insurance coverage of long tail liabilities. He has experience in a variety of geological settings including alluvial deposits, fractured bedrock, glacial outwash, wetlands, and landslides.

    Mr. Henshaw’s expertise includes a strong knowledge of industrial operations, past and current industry practices and procedures, fate and transport of chemicals in soil, soil gas and groundwater, and regulatory compliance and permitting. He has worked as a testifying expert on behalf of innocent landowners and facility operators at several sites impacted by past industrial activities and continues to provide technical and litigation support on RCRA and CERCLA cost recovery matters.

    Jeff Carnahan Environmental Forensics Expert PhotoJeff Carnahan, LPG, VP, CTO, is a Licensed Professional Geologist (LPG) with over 18 years of environmental consulting and remediation experience. Mr. Carnahan's expertise has focused on the investigation and interpretation of subsurface releases of hazardous substances for the purpose of evaluating and controlling the risk and cost implications to his clients.

    While managing sites ranging in size from retail gas stations and dry cleaners to large manufacturing facilities, Mr. Carnahan has amassed extensive experience working with releases of chlorinated solvents within voluntary and enforcement cleanup programs for various State agencies and the U.S. EPA.

    Throughout his career, Mr. Carnahan has provided technical support to the legal community regarding the cause, origin, transport, and potential cost of environmental releases. Additionally, Mr. Carnahan has over 14 years of experience in the investigation and mitigation of vapor intrusion issues and leads the EnviroForensics®' team of full-time VI experts. His distinctive expertise, experience, and forensic talents make Mr. Carnahan a valued strategic partner for his clients on environmental contamination and liability issues.

    View EnviroForensics'® Consulting Profile.
    2/21/2017 · Environment
    Long Term Stewardship, or LTS, is the most recent hot topic in the business of environmental claims, and understanding it is extremely important for constraining long-tail cleanup costs. In site cleanup and closure strategies that focus on risk-based concepts, the elimination of human health pathways is the determining factor for closure. Often, closure plans include intentions to manage exposure through a series of institutional controls designed to limit future land use, although no provisions are in place to ensure that they are maintained following regulatory closure. Recent developments in environmental policy at the State and Federal regulatory levels are promoting the creation of guidelines requiring the need for specific LTS plans describing the monitoring and assessment activities to be performed.

    12/29/2016 · Environment
    What I want to tell you about today is the obligations that your insurance carriers have when they defend a claim under reservation of rights (ROR). I want to tell you this because there is a lot of misinformation that people have on this issue and policyholders have rights that they need to know. When people don't know their rights, decisions can be made that could adversely affect their businesses, their financial future, even their reputation.

    10/12/2016 · Environment
    Vapor Intrusion (VI) has become a routinely addressed environmental exposure issue within the past few years. Especially at sites where a spill of Tetrachloroethene (PERC) or Trichloroethylene (TCE) has occurred. Many state environmental agencies have provided guidance on dealing with VI issues, and now the US EPA has recently finalized their guidance for use at federal sites. In prior years, however, assessment of the VI exposure pathway was often excluded from a site's investigation and remediation process. Since VI was not really on the regulator's radar, many sites achieved closure without VI having been evaluated. As VI has become a routine part of environmental investigations, regulatory agencies are now beginning to reassess closed sites to see if VI exposure issues have been inadvertently missed. Very recently, it has been reported that the Indiana Department of Environmental Management (IDEM) has joined other states in reopening closed sites that warrant further assessment for VI risk.

    8/17/2016 · Geology
    The question is often posed, "How much will it cost to clean up contamination at a drycleaner?" Invariably the answer is, it depends. Factors that come into play include, but are not limited to, the concentration of VOCs present in the subsurface, whether or not the groundwater is impacted, the depth to groundwater, how far the contamination has spread, whether the cleanup will be focused on residential or commercial land use, and the type of geology and stratigraphy underlying the site. This article focuses on how clayey soils affect cleanup considerations.

    6/21/2016 · Environment
    The fundamental, hard-fast goals of a subsurface remediation project are to stop any current human or ecological exposure; and to avoid any potential future human or ecological exposure. Here are some of the basic concepts and economic considerations used to determine effective site cleanup strategies to attain regulatory closure at contaminated sites.

    5/5/2016 · Environment
    Selecting an environmental consultant can be a daunting task and for small business owners that do not have day-to-day exposure with soil and groundwater contamination it's very difficult to know the difference between consultants. This article is meant to shed light on the differences between environmental consultants and to present the different methods for selecting an environmental consultant. It's my goal to show people that selecting the right consultant for your situation is a very important decision and should not be taken lightly. If a business person doesn't know that there are differences between environmental consultants, countless hours and dollars may be wasted, projects could drag on and site closure could be a distant glimmer.

    3/1/2016 · Environment
    Vapor Intrusion, or VI, occurs when contamination beneath the ground emits toxic vapors that can travel through the soil and enter the interior spaces of houses and buildings. The types of contamination most commonly associated with VI concerns are industrial solvents like chlorinated volatile organic compounds (CVOCs), and petroleum products like gasoline. The Environmental Protection Agency just released final guidance on vapor intrusion issues, which regulates how inhalation exposures from VI are assessed and controlled.

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    Chuck Dutill, PE
    Expert Witness | Principal Consultant
    1240 West Chester Pike, Suite 213
    West Chester PA 19382
    USA
    phone: 610-701-5650
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    For over 35 years, Chuck Dutill, P.E., has been performing Hydrology and Environmental Engineering nationwide. He has focused on wastewater, stormwater, flooding, sewers, septic systems, groundwater, drainage, runoff, hydrology, hydraulics, backups, drinking water, and air quality.

    Litigation Support - Mr. Dutill has spent approximately 25% of his professional time providing expert witness services nationwide for over 35 years. About 55% of his expert witness services have been for defendants, with approximately 45% for plaintiffs.

    He has issued more than 100 expert reports, been deposed over part or all of 30 to 35 days, and testified in court (including jury and non-jury trials) over part or all of 25 to 30 days. As indicated in feedback from attorneys on expert witness cases, some of his strengths include diligence, high standards, understandable input, responsiveness, timeliness, thoroughness, oral communications, effective report writing, listening skills, efficiency, professional demeanor, organization, and assistance to counsel.

    Expertise:
    • Hydrology
    • Stormwater Management
    • Flooding
    • Drainage
    • Runoff
    • Sewer Systems
    • Sanitary Sewage
    • Wastewater Treatment
    • Septic Systems
    • Backups
    • Overflows
    • Surface Water
    • Groundwater
    • Hydrogeology
    • Erosion
    • Grading
    • Hydraulics
    • Floodplains
  • Piping Systems
  • Wells
  • Mold
  • Soils
  • Air Quality
  • Regulations
  • Combined Sewers
  • Detention
  • Maintenance
  • Inspections
  • Dams
  • Sinkholes
  • Hazardous Waste
  • Aquifers
  • Drinking Water
  • Hydraulic Fracturing
  • Health and Safety
  • Standard of Care
  • Toxicity
  • Contamination
  • Spills
  • Pollution
  • Remediation
  • Modeling
  • Storage
  • Sedimentation
  • Hydroplaning
  • Odors
  • Waste Management
  • Wetlands
  • Landfills
  • Water Quality
  • Monitoring
  • Storm Sewers
  • Infiltration/Inflow
  • CV Available Upon Request

    View Mr. Dutill's Consulting Profile.
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    Lorne G. Everett, PhD, DSc
    3700 State Street. Suite 350
    Santa Barbara CA 93105
    USA
    phone: 805-880-9301 (Direct) or 805-880-9300 (Office)
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    Lorne Everett Associates Expert Photo


    Lorne G. Everett, PhD, DSc, CGW, PH, PH-GW, BCES, HON.D.WRE, FASCE, FAWRA, FASTM, is an Environmental Consultant with over 40 years of experience in site characterization and remediation of Soils and Groundwater.

    Background - Dr. Everett served as the Chief Scientist at Haley & Aldrich, Shaw Environmental, ARCADIS, and Metcalf & Eddy Inc. He is a retired Professional Researcher (Level VII) in the Bren School of Environmental Science & Management at the University of California at Santa Barbara (UCSB) and Past Director of the Vadose Zone Monitoring Laboratory at UCSB. The University of California describes full professor Level VII as “reserved for scholars of great distinction.”

    Dr. Everett is an internationally recognized expert who has conducted extensive research on Subsurface Characterization and Remediation. He is Chairman of the ASTM Task Committee on Groundwater and Vadose Zone Monitoring. He also chaired the Remediation Session of the First USSR/USA Conference on Environmental Hydrogeology (Leningrad, 1990).

    Dr. Everett has received numerous awards, published over 150 technical papers and reports, holds several patents, developed 11 national ASTM Vadose Zone Monitoring standards and authored and edited over 10 books including: Vadose Zone Monitoring for Hazardous Waste Sites, and Subsurface Migration of Hazardous Waste. His book entitled, Groundwater Monitoring was endorsed by the Environmental Protection Agency (EPA) as establishing “the state-of-the-art used by industry today” and was recommended by the World Health Organization for all developing countries.

    Dr. Everett on Vapor Intrusion


    Litigation Support - Dr. Everett is an expert witness with an established track record in over 80 court cases involving over $2 billion dollars. He provides expert witness services for Toxic Tort Cases, when one or more parties allege health effects and/or property damage from chemicals released to the environment by another party, and Allocation Cases, in which two or more parties disagree over who caused a release to the environment and how much money each party should contribute toward to the cleanup.

    Areas of Expertise:
    • Vapor Intrusion
    • Class Action Lawsuit
    • Personal Injury
  • Toxic Tort
  • Remediation Cost Allocation
  • Property Devaluation
  • View Lorne Everett's Consulting Profile.
    Lorne G. Everett, PhD, et al
    This compilation of selected technical papers, contains peer-reviewed papers that were presented at a symposium sponsored by ASTM International Committee D18 on Soil and Rock and Subcommittee on Groundwater and Vadose Zone Investigations.
    Lorne G. Everett, PhD, et al
    The book covers subsurface water exchange between the land and sea as well as groundwater discharge to the seas. It also provides a review of experimental methods and numerical modeling that can be used for the evaluation of specific discharge data and the effect of groundwater on the salt balance of seas and oceans.
    Lorne G. Everett, PhD, et al
    This publication provides an international perspective on one of the most complex issues in hydrology: field and laboratory measurement of low permeability and dual porosity materials. Eleven peer-reviewed papers, written by an international group of experts, focus on the development of techniques to evaluate hydraulic conductivity and remediation of fine grained and dual porosity geologic materials.
    Lorne G. Everett, PhD, et al
    Compiled by experienced practitioners, this guide covers topics such as basic principles of vadose zone hydrology and prevalent monitoring techniques. Case studies present actual field experiences for the benefit of the reader. The Handbook provides practitioners with the information they need to fully understand the principles, advantages, and limitations of the monitoring techniques that are available.
    Lorne G. Everett, PhD
    This handbook contains specific information on the application of a widely accepted groundwater monitoring methodology, which has been applied to coal and oil shale development sites.
    Lorne G. Everett, PhD
    Guidelines and Methodology for Developing and Implementing a Groundwater Quality Monitoring Program
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    Rudolph P. Frizzi, PE, GE, D.GE
    Geotechnical Engineering Consultant
    555 Montgomery Street, Suite 1300
    San Francisco CA USA
    phone: 201-398-4613
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    Rudolph P. Frizzi, PE, GE, D.GE is a Civil Engineer with over 25 years of extensive practical Foundation and Geotechnical Engineering experience. Mr. Frizzi has extensive project management experience throughout the United States and internationally, with particular emphasis on:
    • Foundation Design and Construction in Urban Areas
    • Large Scale Land and Waterfront Public and Private Development Projects
    Mr. Frizzi has obtained extensive field, office supervision, and project management experience including soil and rock sampling and in-situ testing; monitoring pre , during, and post-construction with state-of-the-art geotechnical instrumentation; nondestructive testing; aqueous and sub-aqueous inspections and investigations; and heavy construction which has contributed to his practical approach to geotechnical problem solving.

    In addition to his "engineer of record" experience, Mr. Frizzi has provided expert geotechnical consultation and trial testimony on over 50 excavation and foundation litigation cases throughout the United States and internationally. His services are available to attorneys for Plaintiff and Defense.

    Areas of Forensic Expertise:
    • Foundations for Stadiums, Arenas, High-Rise Structures in Urban Areas
    • Embankment and Dam Stability
    • Large-scale Land and Waterfront / Marine Structures and Development
    • Shallow and Deep Foundation Systems
    • Soft and Hard Rock Treatment
    • Earthwork
    • Ground Improvement of Waste Fills
    • Temporary and Permanent Lateral Support Systems for Deep Excavations
    • Geotechnical Instrumentation and Vibration Monitoring
    • Construction Dewatering
    View Rudolph Frizzi's Consulting Profile.
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    Shlomo Orr, PhD
    Hydrology / Water Resources Consultant
    5900 W 25th Ave.
    Kennewick WA 99338
    USA
    phone: 509-736-3111
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    Shlomo Orr Hydrology Water Resources Expert PhotoPresident and CEO, Shlomo Orr, PhD, Peng, has over 33 years of extensive consulting, research, and project management experience in the field of Hydrology and Water Resources. He earned a PhD in Hydrology and Water Resources with a minor in Soil and Water Sciences, and BSc and MSC in Civil Engineering.

    Dr. Orr's background includes modeling, planning, and controlling complex subsurface flow and transport phenomena. He has a broad background in conceptual and computational-numerical modeling of fluid flow and solute transport in saturated and unsaturated porous and fractured formations, including stochastic models that account for uncertainties and provide the basis for risk assessment.

    Dr. Orr has taught undergraduate and graduate courses in Groundwater Hydrology, Hydraulic Engineering, and Geostatistics, and advised MS and PhD students (as an Assistant Professor in Civil Engineering, and thereafter). He also taught a course on fluid dynamics in heterogeneous heaps for the Society of Mining Engineering (SME). He has solved some of the most complex problems in his field; has innovated substantially, and has published his advanced works on modeling and optimization in top journals, while serving as a peer reviewer, himself. His toolbox spans from simple analytical models to most detailed, complex, numerical, stochastic 3D models, as well as advanced machine learning models. Dr. Orr has been a reviewer of major books and top journals in hydrology and water resources, and has served in a special committee of SPE (Society of Petroleum Engineers) on Advanced Analytics. He was advising top scientists at the University of Saskatchewan on approaches to Integrated Nuclear Environmental Research and Training (INERT), and he has been serving as a Technical Advisor for SoilVision Systems (an advanced geo-software company). He has done breakthrough modeling work and evaluations of risk assessment models for the NRC (Nuclear Regulatory Commission).

    Litigation Support - Dr. Orr provides expert witness services for cases involving Hydrology, Water Resources, and Environmental Risk. He served as an expert reviewer on advisory boards of the US Army, Air Force, and Navy, on environmental projects. On the other side of the fence, he has conducted major environmental permit applications/investigations for special complex mining operations.

    Dr. Orr's services are available to counsel representing plaintiff and defendant and include site review, written reports, depositions, and trial testimony as needed.

    Areas of Expertise:
  • Hydrogeology & Geohydrology
  • Groundwater Contamination
  • Subsurface Flow & Transport Modeling
  • Aquifer Remediation
  • Soils and vadose zone hydrology
  • Oil and Gas (multiphase flow)
  • Petroleum Hydrocarbons
  • NAPL and DNAPL
  • VOC transport
  • Acid Mine Drainage
  • Seepage
  • Drainage
  • Wellhead Protection
  • Soil Vapor Intrusion
  • Dewatering / Depressurization
  • Landfill Monitoring
  • Geostatistics and stochastic modeling
  • Monte Carlo Simulations
  • Risk-Assessment
  • Geothermal, Fracking, and Waste Injection


  • View Dr. Orr's Consulting Profile.
    2/8/2017 · Hydrology
    Despite remarkable new developments in stochastic hydrology and adaptations of advanced methods from operations research, stochastic control, and artificial intelligence, solutions of complex real-world problems in hydrogeology have been quite limited. The main reason is the ultimate reliance on first-principle models that lead to complex, distributed-parameter partial differential equations (PDE) on a given scale. While the addition of uncertainty, and hence, stochasticity or randomness has increased insight and highlighted important relationships between uncertainty, reliability, risk, and their effect on the cost function, it has also (a) introduced additional complexity that results in prohibitive computer power even for just a single uncertain/random parameter; and (b) led to the recognition in our inability to assess the full uncertainty even when including all uncertain parameters.

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    Sean Wilson, MS, PG, CEG
    664 W. Broadway
    Glendale CA 91204
    USA
    phone: (818) 539-8408
    fax: (818) 543-4565
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    Sean Wilson, MS, PG, CEG, has over 23 years of experience in performing Geologic and Geotechnical Forensic Engineering investigations. Mr. Wilson currently serves as a Senior Professional Geologist at Shannon & Wilson, Inc. He holds a professional engineering geologist license in California and a professional geologist license in Utah.

    Mr. Wilson has broad experience in numerous industries. He has completed or project managed over a 1,000 forensic evaluations of distressed properties in California, Utah and Oregon for insurance carriers. For the construction industry, Mr. Wilson's work in residential/commercial/public works development projects include trench and drilling exploration, down-hole logging, geotechnical laboratory testing, slope stability analysis, fault trench logging, foundation and keyway observations, fill control, mass grading monitoring. He has also provided planning and environmental impact reports for several cities and counties throughout California.

    Litigation Support - Mr. Wilson provides consultation services to attorneys, judges, arbitrators, insurance companies, and others in the evaluation and remediation of soil related distress to structures, earth movement, seismicity, and other matters related to adverse soil, geologic, or hydrologic conditions. His services are available to counsel representing both Plaintiff and Defendant.

    Areas of Expertise:
    • Forensic Investigations
    • Damage Causation Evaluations
    • Geologic and Geotechnical Investigations
    • Landslide Investigations and Mitigation
    • Geologic Hazard Assessments
    • Environmental Impact Report (EIR) Preparation
    • Environmental Planning
    • Observation and Monitoring of Engineered Grading and Construction Projects