THE CITADEL TEAM

Meet our leading environmental, health,
safety, and sustainability experts.

100% employee owned, 100% committed to client satisfaction

Our leadership

Loren Witkin
Founder, CEO, & Chairman
Kier DeLeo
COO & Practice Leader, Building Sciences
Jeff Mistarz
CFO
Scott Brehmer
Practice Leader, Industrial Hygiene & Safety
Nalinna Rasu
Practice Leader, Environmental Compliance
Julie Wojnowski
Practice Leader, ESG & Sustainability
Mark Drollinger
Principal, Engineering & Environmental Sciences
Greg S. McIver
Practice Leader, Engineering & Environmental Sciences

Associate Team Leaders

Kristina Krissakova
Associate Practice Leader, Sales and Marketing
Kirsten Duey
Associate Practice Leader, Engineering & Environmental Sciences
Jack Samuels
Associate Practice Leader, Building Sciences
Paola Gomez-Birenbaum
Associate Practice Leader, Engineering & Environmental Services
Ivy Inouye
Associate Practice Leader, Engineering & Environmental Sciences
Vincent Tilotta
Associate Practice Leader, Engineering & Environmental Sciences
Jeff Klein
Associate Practice Leader, Refinery & Industrial Programs
Michael Peterson
Principal Consultant,
Industrial Hygiene & Safety
Natasha Stratton
Associate Practice Leader, Industrial Hygiene & Safety

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