Executive Committee 2016-2017



Kristen Butler, MPH, CIH

Georgia Tech Research Institute, OSHA Consultation & Training Programs

Kristen Butler has been working at the Georgia Tech Research
Institute (GTRI) for ten years. As a Senior Research Scientist at GTRI, she is both an IH consultant for the OSHA Consultation Program, and a continuing education trainer at the OSHA Training Institute. Kristen holds a Bachelor of Science degree from the University of Georgia and a Master’s in Public Health in Environmental and Occupational Health from the University of Arizona. She earned her CIH in 2012. Kristen has been an active member of the GLS since 2005: she served as Treasurer for three years and is currently the newsletter editor and assists with website administration.


Charles Calmbacher

Bio-Coming Soon



Brandon Cassidy, MS, CIH

Georgia Power Company

Brandon Cassidy is an Industrial Hygienist at Georgia Power
Company (GPC). Since starting at GPC in 2006 he has provided IH support within power generation, power distribution, and various support organizations. Within the last two years he has also provided safety support to GPC’s External Affairs organization. Brandon holds an Environmental Health Science Bachelor of Science degree and a Master of Science degree, both from the University of Georgia. Brandon’s graduate research in Peru and the Philippines focused on air pollution and the corresponding human health effects of bus drivers, traffic policemen, pregnant women and their developing children. Brandon will complete his Master of Business Administration from Georgia State University in the summer of 2015. He has been a member of the GLS since 2008 and earned his CIH in 2013.


Della Ridley, CIH, CSP


Della Ridley is a health, safety, & environmental consultant, having recently retired from Abbott (formerly Solvay Pharmaceuticals) where she held the position of Environmental, Health and Safety Manager. Della is one of GLS’ longest-standing members who helped developed some of our initial operating procedures. She previously served as GLS Secretary and Treasurer.

Past - President

Stacy Savage, CIH

Savage Consultants, LLC

Stacy Savage has 13 years of experience with environmental and industrial hygiene related projects. He is a Certified Industrial Hygienist and the Owner of Savage Consultants in Savannah, Georgia.

Past Executive Committees


Kristen Butler - President
Charles Calmbacher - Pres. Elect
Brandon Cassidy - Treasurer
Della Ridley - Secretary


Stacy Savage - President
Kristen Butler - Pres. Elect
Brandon Cassidy - Treasurer
Della Ridley - Secretary


Stephen Ndiritu - President
Stacy Savage - Pres. Elect
Don Metcalfe - Treasurer
Della Ridley - Secretary

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