CTLGroup, an expert engineering and materials science firm located in Skokie, Ill., announced that Jeffrey Garrett, Ph.D, S.E., President/CEO has resigned the position to pursue other interests. Dr. Garrett joined CTLGroup over 12 years ago and was appointed President and Chief Executive Officer in 2007. Timothy Tonyan, Ph.D., Vice President and Group Manager of CTLGroup’s Materials Consulting Practice, will serve as CTLGroup’s Interim President and Chief Executive Officer effective as of June 14, 2013.

Dr. Tonyan joined the firm in 2009 as a Principal Material Scientist and was promoted in 2010 to Vice President and Group Manager of the Materials Consulting Group. He leads the firm’s Energy & Resources Practice Group providing strategic direction, marketing and project management of significant projects in the nuclear industry, and serves as Officer of Nuclear Affairs at CTLGroup.

Dr. Tonyan has over 20 years of experience in consulting and research of building materials, cement and gypsum-based composite materials, and building systems performance. He is a named inventor on 17 patents related to cement and gypsum based materials and building systems. Prior to joining the firm, Dr. Tonyan directed materials and building systems research laboratories for a multi-national building materials manufacturer and has consulted extensively in construction project management in the U.S. and internationally.

“On behalf of the CTLGroup Board of Directors and our staff, we want to acknowledge Jeff’s contributions to the firm’s continued growth and success and for his  leadership of the firm over the past six years,” said Gregory M. Scott, CTL Chairman of the Board. “We thank Jeff for his accomplishments in broadening CTLGroup’s capabilities, expert services and geographical coverage and wish him well with his future endeavors.”

About CTLGroup

CTLGroup is an internationally-recognized expert consulting engineering and materials science firm that provides engineering, testing and scientific services to our clients in the Building & Facilities; Energy & Resources; Litigation & Insurance; Materials & Products; Transportation; and Emergent Solutions markets. Our 115-person staff includes professionals from the fields of civil, structural, mechanical engineering, architecture, geology, chemistry, ceramics and materials science. Our ability to deliver unique insights and solutions for our clients’ complex challenges is what makes CTLGroup an industry leader. Serving clients from around the globe, CTLGroup maintains corporate offices, consulting offices and laboratories in Chicago (Skokie, Illinois), as well as consulting offices in Washington, D.C., Austin, Texas, and Naperville, Illinois. Services for clients in New York and North Carolina are provided through CTL Engineers & Construction Technology Consultants, P.C. Website: www.ctlgroup.com.