Emissions Expert Witnesses

What is an emissions expert witness?

Emissions expert witness candidates typically have backgrounds in air quality, environmental health, occupational and environmental medicine (OEM), and/or chemical engineering. Emissions expert witnesses have advanced degrees (PhD, PE, or MD) in engineering, environmental science, or medicine with years of experience in automotive emissions, greenhouse gases, emissions testing, and remediation. Emissions expert witness candidates may be members of professional organizations such as Carbon Auditing Professionals (CAP) or Air & Waste Management Association (A&WMA).

What types of cases require an emissions expert witness?

An emissions expert might be called upon to provide litigation support in matters such as personal injury, toxic tort cases, as well as criminal cases. An emissions expert can provide guidance on EPA enforcement and compliance notices. The U.S. Environmental Protection Agency (EPA) conducts environmental assessment, research, and education on many environmental issues, including emissions. The EPA is heavily focused on emissions control, and their enforcement powers include fines and sanctions.

Emissions expert witness case examples

Example matters that Cahn Litigation Services has placed experts for have involved:

• indoor air quality at a Pennsylvania facility,
• environmental management in Maryland,
• greenhouse gas emissions,
• New York groundwater quality,
• natural gas pipelines impact assessment,
• wastewater mitigation,
• waste management methodology at a New Jersey construction site,
• toxicology,
• air dispersion modeling, and
• carbon monoxide poisoning.

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

Expert witness services could include research and authoring expert reports, providing expert opinions, and expert witness testimony at deposition and at trial. In addition, clients may seek an emissions expert for pre-litigation consulting work. In a high-profile case, or litigation involving a significant financial stake, a law firm may request an emissions professional with prior expert witness experience.

Cahn Litigation Services has the experience required to turn a search for an emissions expert witness around quickly, providing the right balance of expertise and testimony experience.

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Emissions 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.

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

• Expert Witness #252142

  This expert is a mechanical engineer with specific expertise in diesel engines, diesel combustion, and diesel emissions. This expert is very familiar with diesel engine support systems, including fueling systems, and this expert’s experience working with diesel engines and diesel automobiles allows this expert to understand the nuances of how a diesel fill tube is designed. This expert’s research focuses on diesel combustion and emissions, where this expert regularly studies different blends of diesel fuels, their effects on engine behavior, combustion, and emissions. This expert is well published and is a frequent presenter at academic and industry conferences.

  This expert is involved in a class action lawsuit involving a major diesel vehicle manufacturer concerning diesel engine emissions. This expert has generated two expert reports (a rebuttal to the plaintiff’s initial expert report, and an expert report concerning essential documentation during discovery), and has provided testimony at depositions. e’sHThis expertThis This expert teaches, and holds Ph.D, M.S., and B.S. degrees in Mechanical Engineering.

  
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• 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.

  
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• Expert Witness #237273

  This expert has many years of automotive experience working at automobile manufacturers, and for the military. This includes direct experience in engine systems, combustion, and emission systems, engine controls and cooling systems. This expert is a Chemical Engineer and is quite knowledgeable in the design of heat exchangers and cooling systems. This expert has direct experience in the use of Exhaust Gas Recirculation for NOx emissions reduction, the effects of temperature on the stoichiometric relationship for efficient combustion, and also how this relates to fuel economy and emissions. This expert has worked with the different types of automotive heat exchange systems since high school auto shop days, work at the automotive OEMs and the supply base, and work with the military. This expert’s automotive and military vehicle experience work includes these types of components and systems.

  
  Besides multiple degrees, this expert is also a PE, and Six Sigma Blackbelt. This expert has deep experience in infringement/non-infringement, and patent validity/invalidity, as an expert witness. This expert authored numerous reports and claim charts for infringement/non-infringement contentions, invalidity and validity arguments, claim construction hearings (in support of Markman briefs and hearings). This expert has experience in post-grant proceedings, as well as various Federal District Courts for automotive suppliers.

  
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• Expert Witness #260698

  This expert leads the technical staff of an internationally renowned consulting firm that serves major power generation technology developers and sells commercial software packages worldwide. This expert is also recognized throughout the world as the author of over 240 technical papers on air pollutant formation and control.

  This expert and consultancy performed sponsored research to develop and validate detailed chemical reaction mechanisms to predict the partitioning of mercury (Hg) along coal-fired utility gas cleaning systems. These mechanisms accurately describe the fate of Hg as flue gas moves through economizers, SCR units, air preheaters, ESPs and fabric filters, and FGD scrubbers in utility power plants. They also accurately predict Hg capture efficiencies for bromine and chlorine additives, activated carbon injection, and the full domain of gas cleaning conditions. The predictions have been validated with measured Hg speciation from over 200 field tests at commercial power plants.

  This expert's firm's reaction mechanism for bromine/chlorine/Hg chemistry is regarded worldwide as the best-in-class. Collectively, this expert's publications on Hg control have been cited more than 800 times and research also spawned three patent applications. The work also spawned two software packages.

  This expert has served as an expert witness on two cases of patent infringement involving Hg control with bromine and activated carbon at coal-fired power stations.

  
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• 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.

  
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• Expert Witness #258974

  This expert is a full professor in a Department of Mechanical and Civil Engineering. This expert is a licensed engineer and has been actively involved in the design and evaluation of advanced power producing systems for many years. This expert is the director of an Automotive Research Center and the head of a graduate Automotive Engineering program.

  This expert has been involved in advanced throttle control fuel injection/combustion systems and was funded by NASA in advanced gas turbine engine fuel injection and combustion systems. Since that time, this expert has also been involved in optimizing fuel, throttle and fuel injection and combustion systems for transportation automotive and trucking applications along with racing applications. This expert has hands on experience in dyno testing of complex throttle and fuel injection systems along with track testing and advanced computational modeling on supercomputing clusters.

  This expert has chaired technical sessions for the Society of Automotive Engineers (SAE) in exhaust and particulate emissions systems, direct injection spark and compression ignition engines, fuel injection and sprays, HCCI combustion, hybrid electric vehicle powertrains, high efficiency engine concepts, multidimensional engine modeling, on-board diagnostics, fuels and fuel additives, cold start characteristics, engine boosting systems, dual fuel combustion, spark assisted compression ignition combustion and heady duty lubricants. 

  Areas of interest are jet and rocket propulsion systems, advanced low pollutant emission, high efficiency combustions systems for advanced aircraft and automotive applications, alternative fuels and renewable energy systems.

  This expert has been deposed and testified in court over 60 times as an expert witness involving the design and analysis of advanced Mechanical Engineering systems. Further, this expert has been involved with numerous cases an expert related to intellectual property and patent litigation, including cases with related to engine control and throttle systems.

  
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• Expert Witness #269836

  This air quality expert holds a Ph.D. and is a P.E. with over 30 years of experience assessing risks of environmental chemicals. This expert has presented projects and research at numerous conferences on topics including acid rain, dense gas plume dispersion, indoor air quality and dispersion modeling, ocean disposal of carbon dioxide, multi-pathway risk assessment, methods to estimate exposure point concentrations, vapor intrusion, landfill gas, and environmental applications of decision analysis methods. This expert earned a B.Sc. in Mechanical Engineering from a well-regarded technical university and an M.Sc. and Ph.D. in Mechanical Engineering from a prestigious technical institute.

  This expert has experience evaluating Clean Air Act permitting issues, including Title V permits, emergency emissions provisions, and the Section 112(r)(1) General Duty Clause, which concerns regulated hazardous chemicals and safe management of those chemicals.

  
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• Expert Witness #277290

  This diesel emissions testing expert owns a company that has conducted independent real-world emissions testing for over 15 years, including testing thousands of vehicles worldwide for NOx and other emissions. The company uses its own equipment, sources vehicles directly from the market, and develops test methodologies suited to the relevant hypothesis rather than merely repeating official tests. This expert developed original testing programs and methodologies, owns one of the largest databases of independent real-world emissions test data, and regularly presents results at industry conferences and in publications.

  This expert has experience in case formulation and preparation, drafting expert reports, deposition and trial work, analyzing real-world test data from a wide range of European diesel vehicles and a smaller number of U.S. diesel vehicles, conducting real-world PEMS testing in multiple regions, and coordinating with local chassis dynamometer operators to reproduce certification tests.

  
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• Expert Witness #277301

  This diesel emissions testing expert is a university professor whose research program focuses on clean, safe, and efficient commercial vehicles through advanced diesel and natural gas engine systems, controls, electrification, powertrain electrification, and vehicle automation and connectivity.

  This expert's research has enabled greater compression ignition (CI) engine efficiency and emissions control through variable valve actuation (VVA). Research on VVA has been heavily cited and promoted by state and federal environmental regulators in connection with new emission standards for heavy-duty engines. This expert holds advanced degrees and has previous testifying experience.

  
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• Expert Witness #277330

  This emissions testing expert has deep experience with vehicle emissions, defeat devices, and fuel economy cases, including testing and documentation for litigation. This expert has worked on some of the largest vehicle emissions matters in the U.S. involving major automobile manufacturers, performed initial emissions cost calculations, and helped develop testing plans for diesel vehicle emissions cases.

  In prior matters, this expert has arranged vehicle purchases and emissions testing that demonstrated excessive emissions. This expert has designed test programs, analyzed resulting test data, and explained the results to attorneys. This expert has also developed test plans to identify potential defeat devices, coordinated vehicle purchases and testing, and analyzed the results in matters involving automobile manufacturers.

  This expert has worked on an in-use vehicle inspection program in Australia, is familiar with laboratories that perform emissions testing there, and understands how to qualify a laboratory to determine whether it can perform the required testing.

  
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• Expert Witness #278312

  This diesel/dual-fuel combustion and emissions expert serves as a professor in a mechanical and aerospace engineering department and has over 25 years of research experience in engine combustion and emissions, alternative fuels including natural gas and hydrogen, CFD simulation of combustion and emissions, and assessment of energy consumption in manufacturing processes. This expert's research involves both experimental and numerical simulation work.

  This expert has served as PI or co-PI on over 40 research projects with substantial total research funding across China, Canada, and the United States. This expert has supervised graduate students at the MS and Ph.D. levels and currently advises doctoral, master's, and undergraduate students.

  This expert has extensive experience with natural gas-diesel dual-fuel engines and hydrogen-diesel dual-fuel engines. This expert's research in dual-fuel engines involves both experimental and numerical simulation work, supported by graduate student work and the publication of over 10 journal papers and a number of conference papers in the dual-fuel engine area.

  
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• Expert Witness #278485

  This development engineer and diesel engine systems expert has experience evaluating the performance of on-highway diesel engines for multiple OEM clients. This expert has worked on behalf of a heavy-duty diesel OEM investigating failures of SCR emissions control systems in a supplier dispute regarding whether parts were appropriately designed and fit for use in the application. This expert has also supported a different heavy-duty diesel OEM in inquiries from federal and state environmental regulators into emission control strategies for on-highway engines across a range of engine sizes. This expert has evaluated data collected from on-road test programs in these projects and assessed the extent to which driving conditions impacted engine power, emissions, and fuel consumption. This expert has submitted expert reports and provided deposition testimony in a number of matters, a number of which involved opinions on aspects of internal combustion engines.

  The same factors that influence emissions, such as engine load, aerodynamic drag, and driving style, also impact fuel consumption, to the point that CO2 emissions are often used as a proxy for fuel consumption. This expert's work in emissions cases has involved analyzing on-road engine and vehicle performance data to evaluate the influence of driving conditions. This expert is familiar with SAE J1321, which uses A-to-B testing to determine how a modification to a vehicle component or system will influence that vehicle's fuel consumption. A-to-B testing is also commonly used in emissions evaluations, and this expert has evaluated such data in matters involving heavy-duty diesel engine performance.

  
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• Expert Witness #279533

  This fuel expert is a Professional Engineer (PE) with B.Sc. and M.Sc. degrees in Mechanical Engineering and expertise in bulk material handling. This expert has deep experience in the supply, handling, storing, blending, and processing of a wide range of bulk materials, including work involving ports and terminals, power, transportation, mining, steel, and process industries. A prior leadership role included chairing a technical committee focused on fuels handling, transportation, and storage.

  A majority of this expert's projects have involved power-generating utilities, ports, and transfer terminals. Fuel is the single largest operating cost for a power plant, and the total cost contribution depends on fuel characteristics, including Btu content, unit dispatch, unit cycling, and heat rate. Fuel cost can exceed sixty percent of the operating cost for a plant. A fossil-fueled power plant converts the chemical energy of fuel to thermal energy to produce steam in a boiler and then mechanical energy rotating the steam turbine. In a combustion turbine and diesel generator, chemical energy is directly converted into mechanical energy. Fuel quality is a critical parameter for combustion and emissions.

  This expert's work has concentrated on solid fuels, which are much more variable and difficult to handle, process, and combust than liquid fuels, although the primary concerns are similar. Crude oil is refined to improve its properties by removing sulfur, tar, and other components. Refineries vary and may be constructed to service regional or country-specific regulations. A refinery produces a number of products that must be separately stored and transferred. The bottom of the barrel, so to speak, becomes petroleum coke, a solid fuel. Project work has included petroleum coke and refinery-related issues. Refined oil is typically transferred by ships, pipelines, barges, and rail, while ports and transfer terminals store fuel along its transport route. Contaminants such as water, bacteria, and assorted particles can be introduced at these locations. The details of tank storage construction, spillage prevention and protection, handling protocols and data logging, and valve transfer options at each transfer location can be important.

  This expert was responsible for a fuel oil handling facilities inspection program at over 10 plant locations receiving oil by vessel or barge. The investigation included modernization or repair of marine structures, fire protection, electrical systems, oil spill prevention, and communication systems, along with review of technical data for a leak detection system. Work has also included evaluating system requirements to convert a power plant from conventional fuel oil to an emulsified bitumen-and-water alternative fuel product. The spillage and dispersion properties of that type of alternative fuel are a more significant concern than conventional fuel oil because it cannot be contained by typical oil spill methods.

  This expert is an experienced expert witness and litigation consultant.

  
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• 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.

  
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• 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.

  
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• Expert Witness #298200

  This coal-fired power plant expert has over 40 years of experience with air quality control systems at coal-fired electric power generating stations and has expertise in the technology and chemistry of wet and dry flue gas desulfurization systems and the control of emissions of sulfur dioxide (SO2), mercury, sulfur trioxide (SO3), sulfuric acid mist (H2SO4), and halogens.

  This expert is knowledgeable about controlling mercury re-emission from wet flue gas desulfurization systems and the addition of halogens to coal to improve mercury capture by activated carbon and by flue gas desulfurization systems.

  This expert has experience in the process technology and chemistry of flue gas desulfurization and mercury capture systems, including design, start-up, operation, and troubleshooting of flue gas cleaning processes in coal-fired electric generating plants.

  This expert has managed R&D to develop improvements to flue gas cleaning processes in coal-fired power plants and directed the development, installation, and start-up of flue gas cleaning technology.

  This expert has provided expert witness services regarding air quality control systems and is a named inventor on U.S. and foreign patents in the air quality control field.

  
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