Who We Are
Aaron Andrews
GIS Group Head
Mary K. Atkins, P.E., CPESC, LEED AP
Vice President
Jeff Ballard, P.E.
Senior Project Manager
Jacob A. Barker, CPESC
Environmental Services Project Manager II
Jonathan E. Borgers, P.E.
Ryan K. Brauen, P.E.
Vice President and Ohio Office Manager
Nathan Brune, P.E.
Project Manager
Katie Castro Jackson, P.E.
Nancy Cho, CPESC
Senior Environmental Services Project Manager
Eric E. Davis
Business Development Representative
Monte Gardner
Construction Services Senior Project Manager
Andrew D. Gordon, P.E.
Tyler G. Graves
Business Development Group Head
Tyler Hammerle, P.E.
Amy Harvell, CHMM, RPC
Environmental Services Group Head
Robert W. Holden, II, Ph.D., P.E., BCEE
Senior Vice President and Wastewater Group Head
Josh Hood, P.E.
Aaron Hutton, P.E.
Vice President and Fort Wayne Office Manager
Bridget Ingram, P.E.
Jessie Johnson
Dylan L. Lambermont, P.E., LEED AP
Executive Vice President and Drinking Water Group Head
Jen Landis
Employee Engagement Coordinator
Lori Latham
William J. Leber, P.E., LEED AP
Stormwater Group Head and Vice President of IT
Jason Mackiewicz
IT Infrastructure Manager
Kasey Marley, P.E.
Melissa A. Mitchell, MSHRM
Senior Vice President of Administration
Wayne C. Moore, P.E.
Electrical Group Head
Josh Morris, P.E., MBA
Mike Nelson
CAD Manager
Brian Price, PMP
Instrumentation and Controls Group Head
Jim Purtee, CPA
Controller
Loys Rees, P.E.
Brad A. Robertson
Field Services Manager
Gary L. Ruston, P.E., BCEE
Technical Services Director
Linda J. Sanders
Rebecca Scarbrough, P.E.
Brent A. Siebenthal, P.E.
President
Adam Sitka, P.E.
Andrew Thompson, P.E.
Senior Project Engineer
Derek Urban, P.E.
Kurt Wanninger
Marty A. Wessler, P.E.
CEO
Jody Williams
Construction Services Group Head
Kate Ziino, P.E.
