Who We Are
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
Joseph Bartos, P.E.
Wastewater Collection Assistant Group Head
Jonathan E. Borgers, P.E.
Ryan K. Brauen, P.E.
Ohio Office Manager and Senior Project Manager
Katie Castro Jackson, P.E.
Project Manager
Nancy Cho, CPESC
Environmental Services Project Manager
Eric E. Davis
Business Development Representative
Dreama E. Doolittle, P.E.
Monte Gardner
Construction Services Group Head
Andrew D. Gordon, P.E., C.F.M.
Tyler G. Graves
Business Development Manager
Collin Hartman
Amy Harvell, CHMM, RPC
Environmental Services Group Head
Robert W. Holden II, Ph.D., P.E., BCEE
Josh Hood, P.E.
Aaron Hutton, P.E.
Bridget Ingram, P.E.
Jessie Johnson
Dylan L. Lambermont, P.E., LEED AP
Jen Landis
Recruiter
Lori Latham
William J. Leber, P.E., LEED AP
Stormwater Group Head
Jason Mackiewicz
IT Coordinator
Kasey Marley, P.E.
Melissa A. Mitchell, MSHRM
Vice President of Administration
Wayne C. Moore, P.E.
Electrical Group Head
Mike Nelson
CAD Manager
Shawn R. Perkins, P.E.
Senior Project Engineer
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.
Jay Thorne, P.E.
Kurt Wanninger
Marty A. Wessler, P.E.
CEO
Jody Williams
