People
Our leadership team has decades of experience, an unwavering commitment to excellence, and a collective track record of delivering on our promises—design, dollars, and deadline.
George W. Treutelaar
Chairman
Justin Treutelaar
President, Business Development and Strategy
jtreutelaar@glph.com
Matt Treutelaar
President, Operations
mtreutelaar@glph.com
John Devine
Executive Vice President, Operations
jdevine@glph.com
Dan Curran
General Superintendent,
Fire Protection
dcurran@glph.com
Jerry Graupman, P.E.
Vice President,
Fire Protection
jgraupman@glph.com
Mark Harmon
Vice President, Special Projects Division
mharmon@glph.com
Raul Hernandez
General Superintendent, Mechanical
rhernandez@glph.com
Edmond Jue
Vice President, Business Development
edjue@glph.com
Jon Peters
Plumbing Utility Services I&D
jpeters@glph.com
Frank Principe
Risk Manager
fprincipe@glph.com
Justin Renderman
General Superintendent, Plumbing
jrenderman@glph.com
Michael Russ
Chief Financial Officer
mruss@glph.com
Luke Sargis
Vice President, Mechanical
lsargis@glph.com
Julie Sherby
Vice President, Service – Plumbing/Fire Protection
jsherby@glph.com