Maryland Industrial Hygiene Consulting Company
  Senior Staff __________________    

Archie M. Barrett, Jr. CIEC, CMC / President 

Archie Barrett


Archie Barrett founded Compliance Environmental International in 1993.  Building upon his vast experiences gained from service in the United States Coast Guard, a health physics technician in the nuclear power industry and as an environmental consultant in private industry. Mr. Barrett established CEI to serve as a superior consulting firm, able to provide a wide array of industrial hygiene and environmental consulting/engineering services.  Founded upon the principle of “turning problems into solutions,” Mr. Barrett has nurtured CEI from a local service company into a full-service firm able to provide rapid, quality services throughout the Eastern United States.


As President of CEI, Mr. Barrett oversees the administrative, management, and technical operations for the company.  He is an active member in the Environmental Information Association, and a past Certification Board member of the American Indoor Air Quality Council. Mr. Barrett is a Board Certified Indoor Environmental Consultant, a Board Certified Microbial Consultant, and a Board Certified Microbial Remediation Supervisor. He has over 25 years of experience in the environmental health and safety field.


Timothy M. Duffy CIH, PE, RS / VP of Engineering

Timothy Duffy


Timothy Duffy serves as the Certified Industrial Hygienist, Professional Engineer and Registered Sanitarian for CEI and possesses over 30 years of experience performing industrial hygiene and engineering assessments of real estate, health care and business operations. Mr. Duffy directs the environmental engineering and industrial hygiene activities of CEI, serving clients which include local government agencies, property management companies, insurance companies, attorneys, and corporate clients. His work has included: expert witness testimoney in court, exposure assessments, cause and origin investigations, building forensics, remediation designs, and engineering control implementation. 

Before joining CEI, Mr. Duffy served as an Environmental Sanitarian for the Baltimore County Department of the Environment. While there, Mr. Duffy provided enforcement of public health regulations including waste management, water quality, air quality, food handling, sanitation, and community hygiene. He has served in a variety of environmental cases serving as the state's witness in the District Court system of Maryland.


Mr. Duffy holds a Bachelor of Science degree in Biology from Towson University and a Masters degree in Environmental Engineering from Columbia Southern University.

Jessica Triay / Industrial Hygienist  


Jessica Triay serves as an Industrial Hygienist for CEI.  Ms. Triay provides a wide range of industrial hygiene services including industrial hygiene assessments, OSHA exposure assessments, microbial assessments, and environmental assessments (Phase I & II).


Ms. Triay holds a Bachelor of Science degree in Biology from the University of Maryland Baltimore County.



Joan Duffy, LEED AP / Quality Control Manager

Joan Duffy

Joan Duffy serves as the Quality Control Manager and Certified Thermographer for CEI. She has over 20 years of experience in industrial hygiene services both in the laboratory performing asbestos PCM, wet chemistry, and mold analyses- and in the field- IAQ surveys, project monitoring, noise surveys, and environmental site assessments


Mrs. Duffy holds a Bachelor of Science degree in Biology from Frostburg University and is a LEED AP with a specialty in Building Design and Construction.






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