Contamination Expert Witnesses

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Contamination Expert Witness - Representative Bios

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

• Expert Witness #267522

  This expert has many years of microbiology experience including practical proficiencies in pharmaceutical, biotech, medical device research and development, manufacturing quality and business development.  This expert also brings to the table practical experience as a microbiology expert witness in patent litigation and product liability cases. This expert has successfully served as a microbiology expert witness on numerous cases, representing branded and generic drug companies, corporations and individuals, plaintiffs and defendants. This expert has supported clients during fact finding/expert discovery and claim construction in addition to providing consultation, patent review, expert opinion, deposition and trial testimony. This expert has also provided technical guidance to counsel in preparation of taking depositions.

  This expert has significant education, training, skill sets and experience, and has provided legal support as a consultant and expert witness in many areas, including:

  • Pharmaceutical microbiology
  • Sterility assurance
  • Good Manufacturing Practices (GMPs)
  • FDA regulatory compliance
  • Contamination control
  • Sterilization
  • Preservative and antimicrobial effectiveness
  • Compounding pharmacy microbiology
  • United States Pharmacopoeia (USP) testing
  • Laboratory operations
  • Ophthalmic formulations and contact lens care

  This expert’s capabilities span a wide range of applications and functions, including, but not limited to:

  • Manufacturing
    • Sterility assurance and aseptic processing
    • cGMP compliance
    • Investigations of microbial excursions, presence of objectionable organisms and out-of specification findings
    • Contamination control and bioburden reduction strategies for sterile and non-sterile fill-finish facilities
    • Manufacturing isolator and RABS design, cycle development and microbiological validation
    • Process development
    • Manufacturing facility design and qualification
    • Process Analytical Technology (PAT)
    • Environmental monitoring (sterile and nonsterile)
    • Fermentation, recovery and purification microbiological control (API, bulk drug)
    • Process water monitoring and maintenance
    • Disinfection and sterilization
    • Cleaning validation
    • Audit readiness
    • Rapid microbiological method (RMM) validation and implementation
  • Microbiology Laboratory
    • Laboratory audits, optimization and management
    • Laboratory design, qualification, optimization and automation
    • Sterility test isolator design, cycle development and microbiological validation
    • cGMP compliance
    • Microbiology method suitability testing, including the harmonized Sterility Test and Microbial Limits Test, Antimicrobial Effectiveness testing, USP 1223 and1227
    • Sterility testing (harmonized)
    • Antimicrobial and preservative effectiveness testing
    • Environmental monitoring
    • Pharmaceutical-grade water analysis
    • Bioburden and microbiological examination of nonsterile products (harmonized Microbial Limits Test)
    • Disinfectant effectiveness validation
    • Microbial identification strategies and instrument/method validation, including gene sequencing and MALDI
    • Endotoxin analysis and method validation
    • SOP and protocol development
    • Method validation and technology transfer
    • Pharmacopoeia (e.g., USP, Ph. Eur., JP) interpretation and compliance
    • Risk assessments (e.g., objectionable organisms, microbial data deviation, bioburden excursions)
    • Documentation and data management
    • Rapid microbiological method (RMM) validation and implementation
  • Quality, Regulatory and Product Development
  • Failure investigations and root cause analysis
  • Microbial data deviation investigations
  • Audit response (e.g., FDA 483, warning letters, consent decree)
  • Regulatory submission support associated with microbiological processes (e.g., NDA, ANDA, IND, BLA, marketing authorization)
  • Pharmacopoeia (e.g., USP, Ph. Eur., JP) compliance
  • Contact lens care and ophthalmic formulation development, manufacturing, stability testing and product release
  • USP 797 compliance, pharmaceutical compounding of sterile preparations (compounding pharmacies)
  
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• Expert Witness #220904

  This contamination expert holds a Ph.D. in Environmental Science and Chemistry from a well-regarded university and is a national expert in environmental toxicology and ecological research involving the transport, fate, and effect of pollutants, as well as quality assurance in government and industry. Experience includes managing pollution control and hazardous waste projects, along with assignments in engineering, analytical science, and toxicology science for regulatory compliance, product registration, risk assessment, and technology development.

  This expert has over 50 years of experience with No. 2 fuel oil and its chemistry, including studying the behavior, fate, and effects of No. 2 fuel oil spills into seawater in Arctic conditions. Work has included developing oil-analysis fingerprinting guidance, analytical procedures for government agencies, remediation of diesel and home-heating-oil spills in state and federal programs, source determination in spills and responsible-party claims, and toxic tort matters involving exposure to No. 2 fuel oil. Forensic evaluations have generally involved contamination in final blending, transportation, storage, mislabeling, or transportation and storage containers.

  This expert is an experienced expert witness and litigation consultant.

  
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• Expert Witness #256814

  This environmental expert has over 40 years of experience in environmental impact assessment and currently holds a principal-level role at an environmental consultancy focused on environmental science, engineering, and forensic investigations.

  This expert has worked on dozens of chemical plant contamination studies involving petrochemicals, toxic metals, carbon black, specialty chemical products, and pesticides.

  This expert has supported class action litigation involving a range of contaminants and has deposition and testimony experience.

  
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• Expert Witness #257528

  This microbiology/biochemistry expert holds a PhD and has over 35 years of practical experience in pharmaceutical microbiology, rapid sterility testing, sterile and nonsterile manufacturing, contamination control and remediation, including Burkholderia cepacia complex, quality assurance and quality control, regulatory affairs, GMPs, and global pharmacopoeia compliance.

  This expert has held senior management roles in research and development, manufacturing, quality, and business development across multiple regulated industries.

  This expert has experience with disinfectant spray efficacy matters.

  
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• Expert Witness #272171

  This food safety and contamination expert has over 35 years' experience in professional food safety microbiology and holds a B.Sc. in Bacteriology and an M.Sc. and Ph.D. in Food Science with a focus on microbiological safety, all from a well-regarded public university. This expert subsequently spent roughly a decade involved in microbiological troubleshooting in over 400 factories while serving as a laboratory manager at a variety of laboratory locations for a food safety laboratory group.

  This expert later served as an Assistant Professor with a university center for food safety and department of food science. This expert remains an Adjunct Assistant Professor with a university center for food safety and department of food science, and is also Adjunct Faculty with a university national center focused on food safety and toxicology. This expert has published articles on a wide variety of food microbiology topics, designed challenge studies, CCP validation, growth studies, and shelf-life studies, developed on-site private and off-site public workshops and lectures, and provided training in food safety microbiology, quality assurance, and quality control.

  Over the past 35 years, this expert has investigated many instances of Listeria contamination during hundreds of food processing facility visits, mostly in the context of production facilities and some in the food service area. This expert has also written extensively on Listeria control and testing.

  This expert is an experienced expert witness and litigation consultant.

  
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• Expert Witness #278495

  This materials chemistry and diesel fuels expert is a chemist specializing in how composition and formulation affect the performance of complex chemical systems and practical materials. This expert consults on fuel, oil, and lubricant formulations for automotive, industrial, and other applications. The work includes analyzing product composition, identifying potential contaminants through standardized and non-standard methods, and assessing the sources and potential impacts of chemical contamination in a range of products. This expert has also consulted in intellectual property disputes, including trade secret and patent litigation.

  This expert served in a senior research role in research and engineering for a petroleum company, developing new formulations for commercial vehicle heavy-duty engine oils and greases to meet API, ACEA, and automotive engine manufacturer specifications using industry-standard bench tests, stationary fired-engine test stands, and field test programs. This expert explored new additives for lubricant applications, including novel antioxidants, anti-wear additives, pour-point depressants, dispersants, and friction modifiers, and contributed to patent applications related to lubricant formulations. The work also included failure analysis and lubricant product support for lubricant blenders, vehicle manufacturers, and end customers in the transportation, mining, construction, and agriculture industries. This expert was involved in the technical validation and global deployment of new components and formulations affecting product claims and specifications, the global supply chain, and product registration with foreign governments.

  This expert has authored over 10 expert reports in litigation and arbitration matters in U.S., U.K., and Canadian jurisdictions and has testified in deposition related to fuel quality and contamination.

  
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• Expert Witness #282488

  This industrial hygiene/mold expert holds PG, CHMM, and RSO credentials and has over 35 years of experience in environmental consulting and industrial hygiene, with extensive expertise in mold and microbial investigations involving commercial, industrial, institutional, and residential properties. This expert has been retained in over 100 litigation matters and has served as an expert witness in over 50 cases involving mold contamination, water intrusion, and microbial amplification.

  This expert's experience includes forensic determination of moisture and contamination sources, assessment of building-related health concerns, development of remediation protocols, oversight of corrective actions, and preparation of technically defensible expert reports and testimony. This expert routinely performs and oversees field investigations, including site inspections, sampling, moisture mapping, and building system evaluations, and is actively engaged in field work associated with mold and microbial assessments.

  This expert also has extensive experience reviewing large volumes of photographs, technical records, and project documentation to evaluate conditions, reconstruct events, and support defensible conclusions in complex litigation. This expert evaluates facilities impacted by flooding, plumbing failures, HVAC deficiencies, and long-term moisture intrusion and provides practical, science-based recommendations to support remediation, regulatory compliance, risk management, and litigation strategy.

  
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• Expert Witness #285086

  This medical device sterilization/manufacturing expert is a quality assurance and regulatory affairs professional with extensive background in the development and management of a variety of sterilization and validation processes in the healthcare industry.

  This expert's expertise is utilized in all aspects of microbiology in manufacturing and laboratory operations, including implementing rapid micro methods, establishing environmental monitoring programs, developing sterilization cycles, and assisting in microbiological contamination investigations.

  This expert holds BS and MS degrees in Biology and has testified on several occasions.

  
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• 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.

  
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• Expert Witness #290582

  This PFAS testing and effects expert holds an M.Sc. in Hydrology with an emphasis on pollution control and contamination and serves in senior consulting and executive leadership roles at an international environmental, health and safety, and sustainability consulting firm.

  Recent work has focused on PCB, PAH, and PFAS contamination of groundwater. This expert is part of a team with combined decades of expert witness experience and litigation consulting.

  
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• 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.

  
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• Expert Witness #296551

  This oil and gas engineering expert is a Licensed Professional Engineer (P.E.) who holds an M.Sc. in Engineering from a university in Texas and an undergraduate degree from another well-regarded university. Before opening an engineering firm, this expert served in a senior operations engineering role for a midstream energy company.

  This expert has extensive background in mechanical engineering and direct experience in oil and gas operations, including chemical program management, sampling, optimization, project management, commissioning, operation, and maintenance of combustion turbines and RICE generator facilities. This expert is a licensed Mechanical Engineer with a master's degree in environmental engineering following undergraduate studies in biochemistry and genetics.

  This expert's specialized background supports analysis of operational facts and sampling results as they contribute to contamination. This expert has a deep understanding of fuel oil properties, handling, and potential contamination pathways within closed systems, as well as experience conducting root cause analyses using established methods to identify the likely source and extent of such incidents.

  This expert has prior expert witness and litigation consulting experience, including analysis, written reports, and testimony.

  
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• Expert Witness #297462

  This materials engineering, polymer sciences, and corrosion expert holds a Ph.D., is a registered Canadian professional engineer, and has extensive experience in materials engineering, polymer sciences, corrosion, materials testing, and research and development. This expert has over 20 years of experience in chemical and materials engineering across markets including oil and gas, mining, petrochemicals, consumer goods, and military applications.

  This expert has experience in coolant chemistry and related root cause analysis involving backup generators, mining equipment, and diesel engines. That work has included reviewing coolant chemical analysis, coolant history, metal contamination, and additive packages in support of root cause failure analysis for diesel engines.

  While leading a materials sciences practice, this expert opined on a number of large matters and several smaller matters involving coolant chemistry, additive packages, and engine failure analysis. One matter involved an allegedly deficient or underdosed additive package used in engine coolant at an industrial facility. The analysis concluded that the package was likely deficient or underdosed, but not enough to cause rapid and widespread engine failure, where ongoing wear and tear indicated that the engines had already been damaged with high metal wear indicators before the alleged coolant issue.

  Another matter involved coolant containing an allegedly unstable or unsuitable additive package associated with rapid engine failures. After review of the coolant chemistry, the analysis concluded that the additive package was likely unsuitable for the end use and likely not acceptable to some engine manufacturers. Immersion testing also showed heavy staining, discoloration, and rapid corrosion of some alloys.

  This expert has also addressed smaller matters involving suspected fraud and engine contamination in recreational vehicle and automotive claims. This expert has testified in North America and abroad in both French and English.

  
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• 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.

  
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• Expert Witness #299853

  This pharmaceutical manufacturing equipment expert has over 15 years of experience spanning clinical research operations, regulatory affairs, and FDA consulting, including direct work in contamination control, GCP/GMP compliance, and equipment standards for ingestible product manufacturing.

  
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