AIHA Potomac Section Board Members

President, Brent Sharrer

Brent Sharrer, MS, CIH is the Director of Industrial Hygiene Services for HP Environmental, Inc. in Herndon, Virginia. Mr. Sharrer has been practicing industrial hygiene for 28 years and has been a member of AIHA for 21 years. In his current role he serves government and private sector clients in the areas of indoor air quality, ventilation, toxicology, asbestos, lead-based paint and mold. He served as the CIH of record for the Capitol Dome Restoration Project from 2014-2016 and recently has focused his efforts on building preparedness in response to COVID-19, filtration technology, IAQ sensor technology as well as mentoring colleagues. He holds a BS in Biology from the College of William and Mary in Virginia and and MS in Marine Science from the University of South Carolina.

President-Elect, John Engel

Past President, Tim Paz

Tim Paz, MS, CIH has been practicing industrial hygiene for nearly 25 years in various industry sectors such as environmental remediation, aerospace, healthcare, medical research, emergency management and most recently as Chief, Industrial Hygiene at the Defense Health Agency in Falls Church, VA. He has served as the President of the St. Louis Local Section of AIHA and Chair of the AIHA Mentoring and Professional Development Committee. While serving on the ABIH Board of Directors from 2013 to 2017, he represented ABIH as the U.S. member of the International Occupational Hygiene Association (IOHA) National Accreditation Recognition Committee. Tim is also a member of the AIHA Thermal Stress Working Group and the International Society of Respiratory Protection – Americas Section. Mr. Paz is also currently serving as the Vice President of the National Association of Hispanic Federal Executives (NAHFE).

Director At-Large, Sam Youssef

Sam Yousssef, BsChe, MBA, ASP, CSP is principal at a boutique regional EHS consulting firm based in the DMV, YCC. est 2009. Prior to consulting, Sam gained early career experience in energy, oil & gas, technology and petrochemicals with large multinational companies before launching his entrepreneurial career which has given him experience in many industry sectors. Recently, local activities focus mainly on large construction and infrastructure projects. Sam has travelled the globe on various assignments and engagements, with current country count at 41! He has his BS Chemical Engineering from Texas A&M University, and his MBA in Finance, Marketing, International Business and Decision Sciences from the Kellogg School of Management at Northwestern University along with several other certifications.  Sam is excited to become involved in the AIHA and the local Potomac chapter, and hopes to continue promoting the organization’s expertise and profile in the region.

Director At Large, Thalia Garcia

Thalia currently works as a contracting Industrial Hygienist who has been in the industrial hygiene sector for nearly 5 years. She has dipped her toes in consulting and in federal contracting throughout her early career. She graduated from Texas A&M University in 2016 (whoop!) with a B.S. in Ecosystem Science and Management and moved to the DC area shortly after to intern in Congress. Currently, her goals are to gain experience and learn from the older generation of IHs before going to graduate school for her Human Factors Engineering Masters. Her favorite part of her job is mixing empathy with scientific analysis. In her spare time, she likes to learn new languages, volunteer at church, tour the international food scene, and read self help books.

Treasurer, Janice Ruggles

Janice Ruggles has over 30 years of experience in occupational safety and health, industrial hygiene, and environmental programs. She is a Certified Industrial Hygienist with a Master of Health Sciences in Industrial Hygiene and Safety from Johns Hopkins University and a Bachelor of Science in Geology from McGill University. She joined the Smithsonian Institution’s Office of Safety, Health, and Environmental Management in September 2016 as the Associate Director for Safety with responsibility for oversight of occupational safety, construction safety, and visitor safety programs. Prior to joining the Smithsonian, she spent 9 years with the Department of Labor (DOL) including 6 years as the Safety and Occupational Health Manager with the Office of Worker Safety and Health. She was responsible for the overall administration and oversight of the internal DOL safety and health program along with responsibility for the safety and health program at the Frances Perkins Building. She also served as a Safety and Occupational Health Specialist with OSHA’s Directorate of Enforcement Programs and as the Site Exposure Matrices Coordinator for the Energy Employees Occupational Illness Compensation Program within the Office of Workers’ Compensation Programs. She served in a variety of occupational safety and health management positions with the U.S. Government Printing Office and the Washington Metropolitan Area Transit Authority in addition to various industrial hygiene and environmental management positions with the Environmental Protection Agency and private consulting. She currently serves as Treasurer for the AIHA Potomac Local Section and served as a Past President (2016-2019).

Treasurer-elect, Kay Dietrich

Kay has over 20 years of experience in occupational health and safety including working at a teaching hospital/university, in a refinery, at a natural gas distributor and at a nationally recognized testing laboratory (NRTL). As an industrial hygienist and safety professional she has performed investigations for chemical hazards like asbestos, lead, mercury, isocyanates, respirable dust, various organic vapors and liquids, noise, silica and welding fumes. She has also developed and administered health and safety programs, conducted training, managed a medical monitoring program and cleaned up hazardous materials spills. She has both a Bachelor of Science in Chemical Engineering and a Bachelor of Science in Chemistry from North Carolina State University and is a Certified Industrial Hygienist and Certified Safety Professional.

Secretary, Effy Castaneda

Ms. Castaneda is an industrial hygienist based in Baltimore, Maryland. She is currently employed at Tidewater where she provides industrial hygiene monitoring and assists with occupational health program development. She has a Bachelor of Science in Public Health from the University of California, San Diego and a Master of Science degree in Occupational and Environmental Hygiene from Johns Hopkins. 

Director, At Large Joy Erdman

Ms. Erdman is a private consultant in occupational safety and health, based in Falls Church, Virginia. Prior to this, she was the senior civilian CIH & CSP working in the Pentagon in support of the U.S. Navy’s occupational safety & health program. Ms. Erdman served on a variety of DoD and Federal Interagency committees and completed the Harvard Kennedy School of Government Program for Senior Executive Fellows. She has taught ethics for industrial hygienists seeking certification maintenance for over 10 years. In 2012, ASSE recognized her as one of 100 women making a difference in safety and in 2020, AIHA recognized her as an AIHA Fellow. Ms. Erdman is past chair of the AIHA Leadership and Management Committee, the current Chair of the AIHA Conference Program Committee, and on the Board of Directors with the AIHA Potomac Section.

Secretary Elect, Lauren Kesslak

Lauren E. Kesslak, CIH, CSP is an Industrial Hygienist in the DC metro area.  She is currently an Environmental Project Manager at ECS Mid-Atlantic based out of National Harbor, MD.  Lauren has a Bachelor of Science degree in Biology from Saint Francis University (Loretto) and a Master of Science degree in Biology from Shippensburg University.   She is Certified in Comprehensive Practice by the American Board of Industrial Hygiene (CIH), and by the Board of Certified Safety Professionals (CSP).

Director of Web Admin, 

Christie De Vito

Christie De Vito, CIH, GSP is a Principal EHS Engineer at the Northrop Grumman Annapolis campus since October 2020.  She also supports field site locations along the east coast. Prior to Annapolis, she worked at Northrop Grumman in Sunnyvale, CA.  She has her BS in Safety Sciences from Indiana University of Pennsylvania, and her MS in Industrial Hygiene from the University of Iowa.