Mr. Rafferty brings the mind and appearance of a scientist to his work. His hands-on experience in exposure assessment is impressive background. My clients rely upon his science-based analysis to calm the waters stirred by emotion.

        -Counsel in Asbestos Litigation

Mr. Rafferty meets all my deadlines, often suggesting unique lines of analysis. I have successfully referred him to partners in need of a qualified, persuasive industrial hygienist.

        -Counsel in Toxic Tort Litigation

I have worked with Patrick Rafferty on several projects and found his professional work outstanding in his field. He is knowledgeable and able to resolve problems. His integrity is beyond reproach, and he is a delight to work with. I would not hesitate to hire Rafferty & James for my next project.

        -Collaborating Expert

About Rafferty & James

We provide expert investigations for indoor air quality problems and occupational exposure assessments.

We are often retained by attorneys as consulting experts to assist them in understanding scientific issues relating to indoor air quality, mold growth, water damage, and occupational exposure to asbestos, benzene and other solvents. We are also retained as testifying experts to prepare expert reports and present testimony at deposition and trial.
Rafferty & James is a consulting practice focused on the identification and resolution of indoor environmental quality and workplace exposure issues.

Founded in 2001, Rafferty & James meets a growing need for state-of-the-art consultation and litigation support for indoor air quality and industrial hygiene issues. We conduct site inspections, building investigations, exposure assessments, and forensic investigative analysis.
Patrick Rafferty is the founder and President
of Rafferty & James, Inc.

Industry Leadership & Publications

Patrick Rafferty is a Board-Certified Industrial Hygienist (CIH) with 40 years experience in public health, industrial hygiene, and indoor air quality. He has served on the American Industrial Hygiene Association’s (AIHA) Indoor Environmental Quality Committee and Product Stewardship Committee, was a member of the AIHA Task Force on Microbial Remediation, and assisted AIHA in drafting COVID-19 guidance for employers.

He has co-authored, edited, and contributed to several AIHA monographs on topics related to environmental health and safety, including:

· The Employers Guide to COVID-19 Cleaning and Disinfection in Non-Healthcare Workplaces

· The Industrial Hygienist’s Guide to Indoor Air Quality Investigations

· Report of the Microbial GrowthTask Force


Rafferty & James delivers value to clients through:
Litigation Support
  • Worker exposure to asbestos and solvents
  • Historical exposure and dose reconstruction
  • Mold exposure
  • Mold & water damage to property

Indoor Air Quality Investigations
  • Moldy buildings
  • Sick Building Syndrome
  • Chemical contamination
Disaster Response
  • Storm damage, including flooding
  • Catastrophic building system failures
  • Fire extinguishing water-damage

Construction Support
  • Water and mold damage
  • Interrupted construction damage
  • Construction defect damage

Case Studies in Value Delivered to Clients

Mr. Rafferty has served as an expert witness in industrial hygiene, indoor air quality, mold exposure, and other occupational and public health issues in courts in Pennsylvania, New Jersey, New York, Delaware, Maryland, and Virginia. His opinions are based on a sound understanding of the science and facts in the case, and his written reports and oral testimony are presented in clear, concise language that is easily understood.

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Rafferty & James, Inc.
535 Tory Hill Rd
Devon, PA 19333