Executive Committee 2017-2018


Charles Calmbacher

Bio-Coming Soon


Drew Peake

Drew Peake is a Professional Engineer with forty-years’ experience.  He is board certified in health (CIH), safety (CSP), environmental engineering (DEE), and forensic engineering (F.NAFE).  When he was president and president-elect about ten years ago, he guided Georgia Local Section through the Georgia Legislative Process for title protection.   


Bob Hendry


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


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.

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

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