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

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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

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Mark St. MarieCIH, RCP-SCF

National Technical Lead, I.H.B.S.

Mark, a seasoned professional with over 30 years of diverse experience. With a background encompassing Department of Defense, Federal Government, and private sector Industrial Hygiene roles, Mark brings expertise in healthcare, laboratory/research, and manufacturing environments.

Previously, he served as the National Industrial Hygiene Program Manager for the Department of Veterans Affairs, overseeing policy development, implementation, and compliance across 175+ Medical Centers.

A retired U.S. Air Force Industrial Hygiene Bioenvironmental Engineering Professional, he holds certifications as a Board for Global EHS Credentialing (BGC) professional, Certified Industrial Hygienist (CIH), and CNBT Registered Certification Professional for Sterile Compounding Facilities (RCP-SCF).

Mark is dedicated to STEM education and training. During his tenure at the USAF School of Aerospace Medicine, he instructed new Air Force enlisted and officer Industrial Hygiene Bioenvironmental Engineering Airmen, teaching a comprehensive curriculum covering industrial hygiene principles, analytical chemistry, air monitoring techniques, and more. Mark is an Adjunct Instructor at the Eagleson Institute, ME.

Education & Certification

B.A., Biochemistry , Rhode Island College
Certified Industrial Hygienist (CIH) certification

CETA CNBT Registered Certification Professional for Sterile Compounding Facilities
SafeTraces veriDart Certified Infectious Aerosol Field Measurements and Control



Expert Witness Services

Environmental, Air Quality

Environmental, Demolition & Abatement

Environmental, Environmental Safety