Environmental Expert Witnesses

What is an environmental expert witness?

Environmental expert witness candidates typically have expertise in environmental health, environmental remediation, civil engineering, environmental engineering, environmental toxicology, and/or as a geologist. Environmental health expert witnesses may opine on issues of sanitation, infectious waste, and other health hazards. Environmental expert witnesses have advanced degrees (PE, MD, PhD) with specialization in topics related to the health of the environment and the impact that environmental health has on climate, water quality, and human health. Environmental protection expert witnesses can provide valuable assistance when conservation and regulation are components of litigation.

What types of cases require an environmental expert witness?

Cases that may require the assistance of an environmental expert witness include matters related to environmental protection, contaminated water or air, toxic exposure, or regulatory compliance.

Environmental expert witness case examples

Cahn Litigation Services is often called upon to locate an expert witness to support environmental matters. Exemplary searches have compassed:

• environmental insurance expert (coverage to fill gaps created by pollution exclusions),
• Occupational Safety and Health Administration (OSHA) wastewater treatment plant regulatory compliance,
• hazardous materials storage tank leak located in New Jersey,
• industrial hygiene in a New York processing plant,
• stormwater purification,
• water resources quality,
• the EPA’s Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA or “Superfund”)
• Pennsylvania drinking water quality,
• landfill audits,
• consumer product hazardous waste management,
• groundwater contamination risk assessment,
• vapor intrusion (chemicals from groundwater contamination), and
• air quality dispersion modeling.

What litigation support work might an environmental expert witness be expected to perform?

Expert witness services could include environmental impact assessments, providing expert opinions, research and authoring expert reports, depositions, and expert witness testimony at a trial. In addition, clients may seek a specialist for pre-litigation environmental consulting services. An environmental expert witness must not only have the appropriate substantive expertise but should also possess the ability to explain evidence to a judge and jury. In a high-profile case, or litigation involving a significant financial stake, a law firm may request an environmental professional with prior expert testimony experience.

Cahn Litigation Services has the experience required to turn a search for an environmental expert witness around quickly. History has shown that the firm consistently provides litigation support candidates for environmental issues with the perfect balance of expertise and testimony to support each specific project and its nuances.

Related Disciplines

Environmental Expert Witness - Representative Bios

Please Note: All Cahn Litigation expert witness searches are customized to attorneys' precise specifications and preferences. Attorneys are encouraged to discuss search parameters with a Cahn search specialist.

Start Custom Search

The below expert witness bios represent a small fraction of those Environmental experts known by Cahn Litigation Services. These bios are provided to give lawyers a sense of the Environmental landscape.

• Expert Witness #256793

  This expert earned a Masters of Science degree in Industrial Health and has many years of experience in environmental engineering, industrial hygiene and building materials exposure assessment, most recently as a Principal Scientist of Health Services. This expert directed several multi-million dollar environmental remediation projects, superfund and environmental site and public health investigations including some with high public profiles. This expert has been retained as an expert witness in class action toxic tort litigation support for industrial clients and has testified at a trial in defense of an oil refinery for a matter related to air quality impact from a large oil spill. This expert has a wealth of expert witness experience, including matters involving alleged chemical and biological exposure-related personal injury claims. This expert has provided deposition and testimony at trial.

  
  Start Environmental Expert Search

• Expert Witness #256820

  This expert earned a Masters of Science degree in Industrial Health and has many years of experience in environmental engineering, industrial hygiene and building materials exposure assessment. This expert directed several multimillion dollar environmental remediation projects, superfund and environmental site and public health investigations including some with high public profiles. This expert has been retained as an expert witness in class action toxic tort litigation support for industrial clients and has testified at trial in defense of an oil refinery for a matter related to air quality impact from a large oil spill. This expert has a wealth of expert witness experience, including matters involving alleged chemical and biological exposure-related personal injury claims. This expert has provided deposition and testimony at trial.

  
  Start Environmental Expert Search

• Expert Witness #256817

  This expert has many years of experience in environmental impact assessment and is currently Principal of an environmental consultancy focused on environmental science, engineering and forensic investigations. This expert has extensive experience with lawsuits in which alternative explanations, alternative sources, and confounder sources were critical to the outcome of the case. Such experience extends to litigations related to property damage, toxic tort, and medical monitoring. This expert has supported approximately 20 class action lawsuits (supporting both plaintiffs and defendants), which involved a range of contaminants: metals, petroleum hydrocarbons, chlorinated solvents, PCBs, Dioxins, carbon black, pesticides, particulate matter, and others. This expert has experience with the class certification process, weighing variables such as distance, exposure routes, concentrations, duration of residency of any claimant, specific health claims of any claimant, etc. This expert has also had much experience constructing Daubert challenges in an attempt to thwart plaintiff claims. This expert has deposition and testimony experience. This expert has also published about 60 professional publications and lectures.

  
  Start Environmental Expert Search

• Expert Witness #256846

  This expert earned a PhD in Environmental Engineering, and has been an adjunct and visiting professor and a guest lecturer. This expert heads a firm engaged in sustainability, environmental, remediation and health & safety services. This expert has a wealth of experience as an expert witness, including support provided in 5 environmental class actions. This expert has deposition and testimony experience. This expert has been a keynote speaker at conferences, has written a chapter, and has two patents.

  
  Start Environmental Expert Search

• Expert Witness #260510

  This expert holds a PhD in Environmental Health, is a Certified Industrial Hygienist (CIH) and a Certified Safety Professional (CSP), and brings to the table many years of comprehensive technical experience in the environmental health and safety field in both the public and private sectors. This expert serves as Founder and technical lead for a highly respected consultancy.

  Specific areas of expertise include chemical exposure evaluation, indoor air quality, heat stress, chemical hygiene, hazard communication, health and safety training and management systems, and respiratory protection. This expert's experience includes designing, directing, and conducting industrial hygiene investigations and exposure assessments (over 5000 investigations conducted/managed), designing and overseeing asbestos abatement activities, designing and managing ventilation system installations, conducting general environmental and hazardous material site assessments.

  This expert has given over five hundred seminars, with topics varying from health and safety management systems and liability issues, to general indoor air quality and mold. This expert has extensive prior litigation experience having been designated a state-recognized expert in hundreds of cases in the areas of industrial hygiene and indoor air quality, been deposed dozens of times, and testified successfully in both trials and arbitrations.

  
  Start Environmental Expert Search

• Expert Witness #260710

  This expert has worked for many years as a metallurgical engineer and environmental geochemist for mining and consulting companies. This expert has worked extensively on environmental and social issues related to mining. As an associate professor of an Institute of Mining Engineering, this expert's research and teaching topics are focused on different topics that lead to improve the image of mining and contribute for sustainable mining communities.

  This expert has worked as an expert of a Global Mercury Project. This includes the implementation of Environmental and Health Assessment of mercury pollution in artisanal gold mining. The project also included the implementation of procedures to reduce mercury emissions and local fabrication of pieces of equipment to reduce exposure of miners to mercury vapors and increase gold recovery.

  
  Start Environmental Expert Search

• Expert Witness #260732

  This expert holds an MS and PhD in Environmental Engineering and a DSc in Mercury Emissions Control and brings to the table many years of engineering and management experience contracting with US federal agencies and various international organizations. This expert's background includes process/reaction engineering, technology feasibility evaluation, and experience with technology commercialization, providing an in-depth understanding of issues related to air pollution control/prevention technologies. This expert has published over 100 presentations and publications, co-authored seven U.S. patents, and has received scientific and technological achievement awards.

  This expert has been technically involved with mercury R&D, as well as technology development and evaluation.

  
  Start Environmental Expert Search

• Expert Witness #260569

  This expert provides expert professional forensic medicine support services for all medicolegal issues in this expert’s specialties. As a medical expert, this expert has the requisite clinical experience and academic achievement to form an objective medical opinion to a reasonable degree of medical probability and certainty. This expert integrates clinical experience, hands-on clinical practice, knowledge of medicine, and scientific evidence to form an independent, objective opinion. This expert gathers relevant data which this expert then analyzes as part of the process of differential diagnosis to formulate an expert medical opinion. This expert’s opinion can then be communicated by written report, deposition, or courtroom testimony. This expert specializes in the Evaluation and Treatment of Cardiology; Hypertension; Nephrology; Pulmonary Disease; Environmental Toxic Illness such as leukemia, cancers, and sick building syndrome; Drug Toxicity and Standard of Care. This expert has extensive experience in providing expert medical opinion regarding the forensic, occupational, clinical, and environmental aspects of exposure to the following toxins, among others:

  • Gasoline
  • Diesel
  • Ammonia
  • Solvents
  • Lead
  • Asbestos
  • Molds
  • Latex
  • Pesticides
  • Herbicides

  This expert provides medical record review for identification of meritorious/non-meritorious claims, negligence and review of prior medical records and medical history for relevance. This expert conducts a comprehensive review of the records, identifying the significant facts, data, and information, which allows this expert to provide an effective case evaluation and decision making.

  This expert researches all of the medical literature currently available through on-line services and through this expert’s specialty electronic scientific library of many years of data, and access to some of the largest medical libraries in the world in order to provide scientific evidence which supports causation.

  This expert has access to more than 50 web sites on toxicology and occupational medicine and has a full time researcher trained in the field updating this expert’s extensive scientific database, and a large support personnel for data research and assessment. As a fellow and member of scientific societies, this expert has access to cutting edge scientific research and frequently speaks to top national and international leaders in toxicology and medicine.

  This expert provides reliable medical opinion concerning whether there is a link between the injurious exposure an individual has experienced and the medical conditions or symptoms which are being reported, and substantiates expert medical opinion with well-established and peer-reviewed scientific evidence and documentation. This expert provides professional deposition and court testimony which furnishes relevant scientific evidence to substantiate medical opinions.

  This expert will provide case strategy: when industrial hygiene data are needed, when and what type of additional experts are warranted (i.e. epidemiology, oncology, etc.). This expert provides evaluation of publications authored by opposing expert, as well as preparation for depositions of the opposing experts either by presentation if pertinent, on-point questions, or intensive development of comprehensive product that draws from all data and facts available from records, literature, depositions, testimony and reports. Frequently this expert will provide papers authored by experts, contradicting their current testimony.

  
  Start Environmental Expert Search

• Expert Witness #257104

  This expert has many years of broad based experience as a real estate professional, including appraisal, physical condition assessments, environmental site assessments, construction, development, brokerage, property management and receivership. Prior to forming a firm, this expert was the Chief Operating Officer of a national full service commercial due diligence firm. Under this expert's direction, the firm provided appraisal, environmental, engineering and construction consultation on thousands for investment grade properties annually. This expert has extensive experience in appraisal, including unique properties such as a Nuclear power plant, and numerous trophy office buildings. This expert has been a guest lecturer and panel member on various appraisal and due diligence topics. In addition, this expert has been qualified as an expert witness in a State Supreme Court and in conjunction with arbitration proceedings.

  
  Start Environmental Expert Search

• Expert Witness #267939

  This water quality expert holds a Ph.D. in Civil Engineering and has expertise in drinking water quality, USEPA drinking water standards, and treatment processes for community water supplies.

  This expert is an academic professor specializing in environmental engineering in a civil and environmental engineering department. This expert received a B.E. in Civil Engineering and an M.S. in Environmental and Water Resources Engineering from a well-regarded university, as well as a Ph.D. in Civil Engineering from another well-regarded university. This expert is a Board-Certified Environmental Engineer (BCEE) in the specialty of Water Supply and Wastewater through a professional environmental engineering academy.

  
  Start Environmental Expert Search

• Expert Witness #269838

  This environmental remediation expert has over 20 years of experience assessing risks of environmental chemicals and currently serves in a project leadership role with an environmental consulting firm.

  This expert has consulted for private and public sector clients, provided expert testimony at hearings and in litigation support, and is a Registered Professional Engineer.

  
  Start Environmental Expert Search

• Expert Witness #280325

  This environmental medical expert holds an M.D. and is a board-certified occupational and environmental physician, as well as a recognized expert in environmental medicine and disaster and pandemic preparation.

  This expert has an active academic and community medical practice and consults to corporations, government agencies, and other organizations in the United States, Europe, and Asia. This expert has extensive clinical experience with individuals experiencing exacerbation of asthma after exposure to smoke or petroleum products, is Board Certified in Occupational/Environmental Medicine, teaches toxicology at a medical school, and has served on federal panels reviewing exposure to particulate matter and its effect on health.

  
  Start Environmental Expert Search

• Expert Witness #280642

  This industrial hygiene/asbestos expert is a Certified Industrial Hygienist and Professional Engineer, holds an M.Sc. in Environmental Engineering, and has over 30 years of experience in the environmental industry. This expert previously held a senior environmental engineering role with a major company before co-founding an environmental consulting firm. This expert's primary responsibility is overseeing technical and field operations. This expert is also active in prominent industrial hygiene professional associations and has presented numerous seminars and lectures, as well as provided expert testimony in environmental legal matters.

  This expert has direct experience with asbestos remediation and abatement, has designed and implemented asbestos exposure assessments, and is an asbestos special inspector. This expert has provided expert witness services in mold, lead, and asbestos for more than 20 years.

  
  Start Environmental Expert Search

• Expert Witness #285091

  This environmental engineer/battery disposal expert is a licensed professional Environmental Engineer (P.E.) and university professor in Civil and Environmental Engineering at a public university. This expert's familiarity with lithium-ion battery grinding stems from comprehensive graduate courses taught in pollution prevention, source reduction, reuse, recycling, treatment, disposal, and hazardous waste management.

  This expert's background as a professional environmental engineer, consultant, expert witness, researcher, and professor provides a strong understanding of fundamental processes in environmental engineering. This expert has addressed diverse environmental challenges involving grinding processes, material separation techniques, emissions modeling, exposure mitigation strategies, and material recovery methods. This expert is an experienced expert witness and litigation consultant.

  
  Start Environmental Expert Search

• Expert Witness #285640

  This government enforcement/EPA civil penalty policy expert holds a B.S.F.S. in International Economics from a prestigious university and an M.A. and Ph.D. in Economics from a well-regarded university, and is an academic professor and fellow at a public policy research institution.

  This expert previously served as a staff economist at federal agencies focused on environmental protection, trade regulation, and sentencing policy. This expert has extensive experience analyzing government enforcement policies as both an academic and government economist, with particular emphasis on environmental and criminal justice issues.

  This expert has published over 125 articles and books on topics including the effect of Community Right to Know laws on firm behavior, why firms reduce toxic chemical emissions, and cost-benefit analysis of environmental regulation and enforcement.

  As a staff economist for the U.S. EPA, this expert conducted analyses of the cost of environmental regulation to firms and assisted in developing EPA's civil penalty policy. This expert has served on a U.S. EPA Science Advisory Board ad hoc committee on the economic benefits of illegal behavior, a federal advisory committee on disclosure of environmental information in SEC filings, and a professional statistical association committee focused on law and justice.

  As a consulting and testifying expert, this expert has assisted companies in negotiation and litigation involving EPA penalty policy, including independent analysis of likely or appropriate monetary penalties under EPA policies and court precedent. This expert has also worked with environmental engineers and accountants to evaluate economic benefits from noncompliance or delay, cost structures, overhead, and related factors that are often determinants of an EPA penalty calculation.

  
  Start Environmental Expert Search

• Expert Witness #286303

  This environmental dispute investigation, liability assessment, timing and source of contamination expert is a registered Professional Engineer with over 25 years of experience in environmental assessment, remediation, and risk management, including over 20 years in environmental dispute investigation and management, cost containment, liability assessment, settlement negotiations, and expert witness services. This expert holds a B.S. in Chemical Engineering, serves in a senior engineering leadership role at an internationally recognized consultancy, and has conducted, managed, or overseen investigations and remediations at many sites across the country. This expert has been a member of a prominent standards committee responsible for preparing standards and guidelines for environmental investigations, environmental cost estimation, and other environmental risk management issues for over 10 years. This expert has consulted on hundreds of environmental cost recovery disputes and has been retained as an expert witness in over 30 cases.

  This expert's areas of expertise include timing and source of contamination, review of costs associated with investigation and remediation, allocation of costs to different time frames, parties, or sources of contamination, and the defense of environmental consultants. Much of this expert's experience relates to work performed for insurance companies in environmental disputes where the timing of contamination is the primary area of disagreement. These cases range from small heating oil releases and underground storage tank (UST) issues to major releases from underground pipelines and aboveground storage tanks. This expert's main strategy in these cases is to rely on multiple lines of evidence, including environmental data, physical observations, witness accounts, operational data, and metallurgical analysis.

  This expert has completed expert testimony on the timing of petroleum releases in non-insurance litigation, has been deposed over 30 times, and has testified at a number of trials and multiple arbitrations, including in international venues, as well as assisted in many mediations.

  
  Start Environmental Expert Search

• Expert Witness #286561

  This environmental sciences/sub-surface investigation expert is a senior environmental chemistry leader at a nationally recognized, award-winning environmental consulting firm with multiple offices in the eastern and midwestern United States, providing due diligence, environmental building sciences services, regulatory compliance services, subsurface investigation, and remediation services to a wide range of market segments, and has over 30 years of experience in environmental engineering, chemistry, and project management. This expert is familiar with a wide range of environmental regulations, including RCRA, CERCLA, LUST, and USEPA Contract Laboratory Protocol, and has extensive experience with a variety of state-led risk-based closure programs.

  This expert has performed and managed hundreds of residential, commercial, and industrial site assessments, site investigations, and remediation projects involving heavy metals, PCBs, petroleum, PFAS and emerging contaminants, and chlorinated solvents.

  This expert has investigated hundreds of sites to determine the nature and extent of contamination. The contaminated media included soil, groundwater, sediment, surface water, vegetation, air, and building materials. In expert witness work, this expert has provided expert reports, interrogatories, affidavits, depositions, and courtroom testimony addressing environmental investigation, the timing and sources of environmental releases, contaminant migration routes and pathways, reasonableness of response costs, and various other expert analyses.

  
  Start Environmental Expert Search

• Expert Witness #293842

  This environmental remediation expert is a senior leader and manager at an environmental and economic development consultancy and has over 20 years of experience in environmental consulting and management.

  Areas of expertise include the evaluation and remediation of environmental contamination, environmental due diligence, Phase I and Phase II Environmental Site Assessments, petroleum and chlorinated solvent site investigations, design and installation of monitoring well networks, aquifer testing, asbestos and biological remediation and project supervision, preparation of facility Spill Prevention Plans for aboveground and underground storage tank facilities, and mold investigation and remediation.

  This expert is an experienced expert witness and litigation consultant.

  
  Start Environmental Expert Search

• Expert Witness #296555

  This oil and gas industry and environmental science expert team includes experts with M.S., Ph.D., and P.E. credentials and experience in pipeline safety, mechanical integrity, environmental consulting, and air permitting in the energy sector.

  This expert is a principal engineer at a pipeline safety and mechanical integrity consultancy and has over 15 years of specialized experience in the oil and gas energy industry, with extensive experience in transportation, integrity management, safety, processing and refining, and Process Safety Management. This expert has practical, hands-on expertise in failure analysis of varied systems, integrating process and operational data, repair records, and relevant technical documentation. This expert has directly operated, designed, and maintained oil and gas assets, allowing analyses to be informed by real-world application rather than solely theoretical knowledge.

  This expert has in-depth knowledge of U.S. and international safety regulations and industry standards, including PHMSA, OSHA, ASME, and API requirements. This expert has played a significant role in engineering, program, and project management activities aimed at ensuring safe operations, particularly in response to regulatory actions. This expert consistently uses the Department of Energy's Root Cause Analysis methodology, a rigorous framework used in engineering assessments and legal proceedings. This expert has experience testifying and drafting expert opinion and rebuttal reports.

  This environmental science expert holds a Ph.D. and P.E. credential and serves in a director-level role at an environmental consulting firm specializing in the energy sector. With over 25 years of environmental consulting and air permitting experience focused on the energy industry, this expert has managed the preparation of hundreds of New Source Review and Title V air permits for upstream, midstream, and downstream facilities in the United States and Mexico.

  This environmental science expert holds an M.S. and serves in a leadership role at an environmental consulting firm specializing in the energy sector. With over 20 years of environmental consulting and air permitting experience focused on the energy industry, this expert helps oil and gas companies develop and operate assets in accordance with environmental regulations. This expert has managed the preparation of hundreds of New Source Review and Title V air permits for upstream, midstream, and downstream facilities across the United States.

  The team has experience as expert witnesses and litigation consultants.

  
  Start Environmental Expert Search

• Expert Witness #297605

  This environmental health expert holds an MSPH and a PhD in Epidemiology from a well-regarded public university and has a distinguished academic background and extensive career in epidemiology and environmental health. With over 40 years of professional experience, this expert has held numerous academic and research positions across leading institutions, including associate research professor and professorial lecturer roles at a university school of public health, contributing significantly to occupational and environmental health research and graduate education.

  This expert's work has included leadership roles in multiple federally funded studies with agencies focused on occupational safety, environmental protection, public health, and occupational health research, addressing topics such as pesticide exposure, silica risk, and bioterrorism preparedness. In the public sector, this expert has held intergovernmental personnel appointments with federal veterans health and environmental protection agencies, providing expert guidance on veteran health risks and regional risk assessment. Earlier roles include senior scientific and teaching positions within public and private university systems and a public health research institute, including studies on pesticide safety and silica-related diseases.

  This expert's career reflects a sustained commitment to public health research, policy, and education, with a strong focus on environmental and occupational epidemiology. This expert has extensive experience with workplace and environmental asbestos contamination, including asbestos contamination in talc and talc consumer products, and has reviewed many mineralogy studies of asbestos fibers in workplace settings as well as asbestos in industrial and consumer talc products.

  This expert is familiar with findings concerning asbestos minerals in talc consumer products and the history of that contamination issue. Throughout a career as an occupational epidemiologist, this expert has studied types of silica dusts in contrast with asbestos, including mined and refined talc powder contaminated with asbestos fibers. As a major part of professional duties, this expert has reviewed and testified on scientific literature related to asbestos, silica, and talc, including work concerning talc levels and cancer risk, exposure parameters used in quantitative risk assessments, and cancer risk extrapolations used in asbestos and talc matters.

  This expert has taught graduate-level public health coursework addressing industrial hygiene asbestos sampling and asbestos exposure in military and civilian applications of asbestos insulation, including asbestos remediation in military housing. This expert is an experienced expert witness and litigation consultant.

  
  Start Environmental Expert Search

• Expert Witness #2302114

  This mold origination expert is a senior environmental consulting professional with extensive experience providing indoor environmental consulting services and expertise in mold inspections, indoor air quality assessments, mold testing, building science consulting, mold remediation planning, mold remediation services, thermal imaging surveys, environmental tobacco smoke assessments, and former marijuana grow-op assessments. This expert has worked on over 3000 projects involving indoor environmental assessment or remediation services.

  This expert is a Certified Commercial Building Mold Inspector and Certified Commercial Building Mold Remediator through a U.S.-based certifying body, and also holds Certified Mold Assessor and Certified Mold Inspector credentials through an environmental association. This expert has provided expert witness consulting services related to mold litigation and testified in court and in tribunals as an expert witness for mold-related hearings.

  
  Start Environmental Expert Search

• Expert Witness #2372765

  This electroplating expert is a PE and holds a Bachelor of Science in Chemical Engineering. While working for a major automotive manufacturer, this expert wrote zinc plating specifications for airbag sensor plating, ensured plating complied with design and environmental standards, and spent many months at a plating supplier addressing implementation issues. This expert also served as the environmental and safety officer for a military laboratory and ensured compliance with environmental standards.

  Early in this expert's career, this expert authored an engineering paper using gas chromatography and mass spectroscopy and presented it at a professional venue. This expert has extensive expert testimony experience, including reports, depositions, and trials.

  This expert notes that a closed-loop system should have been used, particularly given the dangers of hexavalent chromium as a pollutant, carcinogen, and contaminant. This also raises significant CERCLA issues involving environmental regulators. Polyfluoroalkyl substances also cannot be released into the environment or atmosphere and require special treatment and filtration systems.

  
  Start Environmental Expert Search