VERTEX has Experts that Talk the Talk and Walk the Walk.

Unlike others, VERTEX provides forensic consulting alongside traditional AEC services which allows for a 360 degree view of your project.

VERTEX Services


Need an expert for your case?

Our forensics experts work alongside AEC specialists which enhances our skills and bolsters the credibility of our expert consultants.

Find an Expert


VERTEX delivers innovative solutions on complex projects globally.

Since 1995, VERTEX has completed over 90,000 projects.

View Portfolio


VERTEX believes in a Lifetime of Learning philosophy.

Stay current with our industry experts as they share their insights and knowledge on the built environment.

View Insights

Grow Your Career

Join Our Team

VERTEX is looking for talented individuals to join a highly technical team of forensic consultants, design engineers, construction managers, and environmental scientists.

Learn More

Contact Us

Have a question or want to speak with a technical professional?

VERTEX is a multi-discipline firm with global coverage. Our international network of resources enables us to provide multi-national clients with the most qualified local professionals who understand the culture, language, and regulatory framework.

Call Us: 888.298.5162

Call Us

Call us at 888.298.5162.

Industrial Hygiene & Building Sciences worker

VERTEX Speaking for the Association for Professionals in Infection Control and Epidemiology

November 11, 2022

Archie Barret and Karl Stefan will be speaking at ECAPICAssociation for Professionals in Infection Control and Epidemiology (APIC) , East Central Pennsylvania (ECP) Chapter (043) on December 1, 2022 from 1-1:45 PM at Central Penn College on the topic of Transitioning to ICRA 2.0 & Understanding the Changes.

Archie Barrett is the Technical Director of Healthcare Services at VERTEX. Mr. Barrett provides technical guidance and management of Healthcare Industrial Hygiene staff, trains and mentors Healthcare Industrial Hygiene staff and performs business development with a focus within the Healthcare market. He is an active member in the Environmental Information Association, and a current Certification Board member for the American Council for Accredited Certification. Mr. Barrett is a Council Certified Indoor Environmental Consultant, a Council Certified Microbial Consultant, and a Council Certified Microbial Remediation Supervisor. He has over 30 years of experience in the environmental health and safety field. Mr. Barrett is an ASHE Trainer (ICRA 2.0 Train the Trainer). He teaches the class Construction in Healthcare Training® and regularly develops ICRA 2.0 risk assessments for construction and provides associated training.

Karl Stefan is a Senior Industrial Hygienist at VERTEX. Mr. Stefan has approximately 10 years of experience in indoor environmental consulting. He is a Council Certified Microbial Consultant, holds an M.S. in Environmental Science, and is a Certified Health Care Physical Environment Worker. He regularly performs a variety of field work and project management, including ICRA 2.0.

To learn more about VERTEX’s Industrial Hygiene & Building Sciences services or to speak with an Environmental Expert, call 888.298.5162 or submit an inquiry

Back to Insights