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Alex D. Oak, PE
Chairman and Chief Executive Officer, Partner

Fredrick J. Green, AIA, NCARB
President and Chief Operating Officer, Partner

John D. Harris, CPA
Executive Vice President

Dennis L. Southerland
Senior Vice President, Partner

Bruce E. Breeden, Ed.S
Vice President, Partner

David A. Lach, PE, LEED AP
Client Services Director, Partner

Dennis McGuire
Client Services Director, Partner

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David A. Lach, PE, LEED AP
Client Services Director, Partner
 
David graduated from Purdue University with a Bachelor of Science in Civil Engineering. As a registered professional engineer in Indiana, Ohio, Illinois, Michigan and Kentucky, he maintains a tradition of engineering excellence while growing our service offering.

He is a partner/owner of Cripe Architects + Engineers and Client Services Director.

Named one of the 2007's 'Forty Under 40' by the Indianapolis Business Journal, David contributes to our community through his associations with the following organizations:

  • Purdue Alumni Association (Life Member)
  • American Society of Civil Engineers
  • St. Vincent DePaul Society at St. Mary's Catholic Church
  • Board of Directors for Big Brothers Big Sisters of Central Indiana
  • 2007 Hamilton County Leadership Academy
  • 2009 Stanley K. Lacy Executive Leadership Series (Class XXXIII)
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