Leadership Directory
Practitioners who lead our practice areas and offices.
Showing 1–24 of 107
Christopher Battista
Principal Scientist
Julia K. Wilson, PhD, PG, LPST CAPM
Principal Geologist
Joanna Hall, SHRM-SCP, CCP
Human Resources Director
Jon Rohrer, PG, CHg
Principal Hydrogeologist
Andy Zdon, PG, CEG, CHG
Technical Director
Jason B. Flagg, PE, CHMM
Technical Director
Joshua Graber, CHMM
Principal Scientist
Edward J. Weagle, LSP, LEP, CHMM
Principal Geologist
Derek Drechsel, PhD, DABT, CIH
Principal Scientist
Emily Goswami, MS, CIH
Principal Scientist
Mikhail Fradkin, CIH, CSP
Senior Scientist I
Brian Hobbs, CIH, CSP
Corporate Health and Safety Director
Christopher Proce, PG, CSP
Managing Director of Site Investigation and Remediation Services
Catherine Boston, MPH, DABT
National Director of Human Health Risk Services
KariAnne Czajkowski, Certified Senior Ecologist
Principal Scientist
Mark Elmendorf
Principal Scientist
Jacqueline Fusco
Technical Director
Samantha Goode
Project Manager
Peter R. Kelso
Principal, Economic & Complex Analytics
Michael Lesakowski
Vice President
Michael S. Kozar, PG, LSRP, LRS
Operations Manager
Brian Klaus, LSP
Principal Geologist
Lawrence McTiernan, PG, LSP
Principal Hydrogeologist
Nancy Nevins, PG, LSP
Principal Geologist
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