We provide testing services to certify product and materials compliance, support quality control, and ensure the health and safety of workers and their environment. We provide assistance for clients who are not sure what tests they need. Our accredited materials characterization laboratory is the foundation of all the services of RJ Lee Group provides, including standardized testing for compliance, industrial hygiene and environmental analyses, quality control, and materials research and development.

We provide credentialed expertise supported built by robust scientific data. We provide significant support to industrial clients for product development, industrial hygiene and overall production support.

RJ Lee Group maintains a visible and respected reputation within the legal community, having offered scientific support in civil litigation matters for nearly 30 years. 

  • Product Liability 
  • Toxic Tort
  • Construction Defect
  • Fugitive Emission
  • Personal Injury
  • Patent Infringement
  • Contract Disputes
  • Insurance Subrogation

Subject Matter Experts

From our core business of providing scientific solutions to our clients, we have developed innovative products. Some are produced internally, and some have arisen from partnerships with other research organizations. 

For example, we build lab software solutions to help manage and streamline your labs data, and environmental testing products for a variety of applications. 

  • IntelliSEM is a powerful automated particle analysis system.
  • ParticleID is  a customizable cloud hosted web application used to identify foreign particulate matter and  assist with root cause investigations. 

Other products we create count particles and help keep the air and environment safe.

RJ Lee Group is a materials analysis laboratory and consulting company which serves many different industries. We offer scientific solutions such as industrial forensics services, laboratory and testing services, litigation support, and laboratory software to many industries:

Establishing the WTC Dust Signature: Managing Post 9/11 Environmental and Damage Assessments

RJ Lee Group News

May 15, 2013

The collapse of the World Trade Center Towers following the catastrophic events of 9/11 produced a dust cloud that covered much of lower Manhattan. Thousands of private and public buildings were contaminated by the dust. Building owners in the vicinity of the collapse, worried about environmental impact to their damaged buildings, retained RJ Lee Group to assess the situation. A major objective of the study was to establish a set of baseline conditions to determine which components of the WTC dust were sufficiently above typical background dust levels in New York City so a quantitative signature could be developed. This signature would then be used to differentiate the structural and environmental impact of the WTC event on these buildings and to determine the appropriate remediation method.

We began by designing an overall comprehensive environmental program to manage the evolving studies. The plan included both a site-specific Health & Safety Plan (HASP) as well as site monitoring programs to protect both worker and community health. Next, we concentrated on assessing the damage impact of potential fall-out contaminants such as fuel oil, diesel fuel, particulates, asbestos, heavy metals, PCBs, PNAs and dioxins. The enormity of the task and the volume of samples anticipated required strict attention to recording details. To ensure these studies were executed properly, we developed customized software applications for the Personal Data Assistants (PDAs) we used to record our findings during sample collection, visual assessments, and other field activities. Using PDAs and customizable software, we increased the efficiency of field operations, minimized data entry errors, and streamlined the processing of more than 100,000 samples collected over a three-year period. Based upon these studies, we developed what is commonly known as the “WTC Dust Signature.” This signature demonstrated the unique characteristics of the finely pulverized dust and chemicals resulting from the WTC event and was used to indicate areas of impact in affected buildings.

RJ Lee Group also served as the lead scientific management team, supervising subcontractors including architects, engineers, toxicologists, analytical laboratories, and other scientific experts. We also established routine ongoing communication with the U.S. EPA and New York City & State officials to ensure acceptance of procedures, protocols, and transmittal of our findings. The resulting reports became the basis for the EPA’s ongoing remediation programs for buildings impacted by the WTC event.

To this day, RJ Lee Group’s studies represent the most comprehensive environmental impact studies ever performed in Class-A building structures and serve as a basis for catastrophic event response efforts where environmental damage is being evaluated. The resulting WTC Signature document was used as evidence in civil litigation and entered the public record via the judicial process.

Related Posts

PTR-MS and Indoor Air Research

PTR-MS and Indoor Air Research

Indoor air quality research continues to grow substantially over the last several years. Most research prior to the 2010’s was focused on outdoor...