Hall Brodie, PE
President, AQS Building Consulting, Inc.

Hall Brodie serves as President of AQS Building Consulting. He oversees the business development, operations and financial performance of the building consulting practice. A registered Professional Engineer for more than 30 years, Hall’s experience covers design, operations and maintenance, commissioning and consulting. His background includes large commercial and industrial facility design, construction and commissioning, commercial and industrial facility operations and maintenance, commercial and industrial HVAC operations and maintenance and management of a large civil and land development consulting practice. He holds a bachelor’s degree in Civil Engineering and a master’s degree in Environmental Engineering. Hall worked most recently for Georgia-based Jordan, Jones & Goulding, where he specialized in land development. Prior to that, he worked for the Saudi Arabian petroleum company Saudi Aramco, focusing on engineering and operations. Hall is an active member of the Atlanta Chapter of the Urban Land Institute and the National Society of Professional Engineers.

Stephany Mason serves as Technical Director for AQS. Stephany is responsible for the development and documentation of new techniques and research methodologies related to product emissions and indoor air quality. Stephany’s product emissions and indoor air quality experience includes testing for  the GREENGUARD Certification programs, CHPS, Germany’s Blue Angel program and BIFMA methodologies, among others. In her role as Technical Director, Stephany is also responsible for specialized product emissions testing, research and interpretation, as well as risk assessments related to product use. She also has extensive experience authoring published papers and delivering presentations on product emissions and indoor air quality. Stephany holds memberships with ASTM, AWMA, ASHRAE, ACS and ISIAQ, and she has participated in developing numerous standards and regulations, including those chaired by ASTM, BIFMA, CHPS, USGBC and California 01350. Stephany holds a doctorate in Earth and Environmental Sciences, a master’s degree in Materials Science and Engineering and a bachelor’s degree in Geology from the University of Illinois at Urbana-Champaign. Prior to AQS, she served as a research scientist and instructor at the Georgia Institute of Technology in the Earth and Atmospheric Sciences Department and as an analytical chemist and post-doctoral researcher in the Environmental Products Group at YSI, Inc.

Dr. Elliott Horner serves as Director of the Air Quality Sciences ISO 17025 accredited Microbial Laboratory. He also serves as principal consultant with the company’s Building Consulting group. Elliott’s research programs have included studies of mold development on building materials under various environmental conditions, including simulated water losses and studies on microbial volatile organic compounds (MVOCs). Elliott also provides consulting and expert opinion (plaintiff and defense) for litigation support. Broadly recognized as an expert on fungal allergens, Elliott has also managed aerobiology monitoring and research programs; conducted studies of mold growth on latex paint; characterized soil and root fungi in pine seed orchards; conducted field surveys of residential indoor air; and managed assessments of microbial growth in commercial buildings, schools and hospitals. Elliott has written numerous peer-reviewed research papers and book chapters, and he has served on committees for ASTM International, the International Society of Indoor Air Quality and Climate (ISIAQ), the American Academy of Allergy, Asthma and Immunology (AAAAI) and the American Industrial Hygiene Association (AIHA). Elliott is a member of the American Society for Microbiology and Mycological Society of America, and he is a Fellow of the AAAAI. Elliott holds a bachelor’s degree in botany, a master’s degree in mycology (the study of fungi), and a doctorate in plant pathology. After completing his Ph.D., Elliott completed a National Institutes of Health (NIH)-funded fellowship characterizing fungal allergens at Tulane University School of Medicine. Previous experience includes appointment as a research professor in the Allergy/Clinical Immunology Section of the Tulane University Medical Center.