New Senior Principals and Principals Announced

February 16, 2021

Terracon is pleased to announce the promotion of 18 individuals from Principal to Senior Principal and appointment of 34 individuals to Principal. Terracon’s Principals Program provides recognition, rewards, and opportunities for employees who have distinguished themselves through their strong leadership and contribution to the continued success of the company. Please join us in congratulating the new Senior Principals and Principals.

New Senior Principals

  • John E. Agee, P.E., Regional Manager, Nashville
  • Peter E. Falletta, P.E., DFW Regional Materials Manager, Dallas-Fort Worth Metro
  • Ryan W. Feist, P.E., Assistant Service Line Director, Geotechnical, Colorado Springs
  • Gary K. Howalt, Department Manager, Environmental, Jacksonville, Florida
  • Stephanie P. Isenhour-Price, Director, Human Resources Operations, Olathe, Kansas
  • Guy L. Johnson, Office Manager, Cedar Rapids
  • Michael T. Jordan, P.G., Office Manager, Raleigh
  • Jesse M. Kocher, P.E., Office Manager, Round Rock/Austin
  • Bradley A. Levich, P.E., Office Manager/National Account Manager, Lincoln
  • Matthew R. McElvogue, P.E., Building Enclosure Services Director, Winter Park, Florida
  • Jeffrey A. Miller, P.E., LEED AP, CBCP, EBCP, Senior Engineer, Facilities, Houston
  • Abu S. (Mo) Mohammad Nasim, Ph.D., P.E., National Director, Geodesign, Washington DC Metro North
  • Aaron J. Muck, P.E., Assistant Service Line Director, Geotechnical, Cincinnati
  • Brett A. Pope, P.E., Manager, Regional Services, Texas Division (Austin)
  • George A. Tannoury, Ph.D., P.E., Office Manager, Wichita
  • Kenneth M. Valder, P.E., Regional Manager, Pacific Northwest Region
  • Matthew Y. Wheaton, L.G., P.E., Department Manager, Environmental, Seattle
  • David J. Wolfgram, P.E., Office Manager, Minneapolis and St. Paul


New Principals

  • Jesse H. Aguilar, P.E., Department Manager, Facilities, San Antonio-FAC
  • Charles M. (Mike) Basha, Department Manager, Materials, Charleston, S.C.
  • Michaela T. Brewster, CPG, Group Manager, Environmental, Omaha
  • Christopher R. Briggs, P.E., Department Manager, Geotechnical, Charlotte
  • Daniel J. De Battista, P.E., G.E., Office Manager, Las Vegas
  • Terry H. (Heath) Defoor, P.E., PMP, Office Manager, Seattle-Lynnwood
  • Zack L. (Lem) Dial, P.E., Office Manager, New Orleans
  • Ronda M. Freeman, Director, Procurement and Payables, Olathe, Kansas
  • Robert A. Garrison, Department Manager, Environmental, Dallas-Fort Worth Metro
  • Christopher S. Handley, P.E., Department Manager, Geotechnical, Little Rock
  • Alicia M. Hill, P.E., Senior National Account Manager, Manchester, New Hampshire
  • Timothy A. Hohlt, Department Manager, Materials, Manchester, New Hampshire
  • Byron C. (Casey) Jones, Department Manager, Facilities, Dallas
  • Travis J. Kassebaum, P.E., Department Manager, Geotechnical, St. Louis
  • Mingu Kim, Ph.D., P.E., Manager, Regional Services, Jacksonville, Florida
  • Mathew O. Knutson, Department Manager, Environmental, Minneapolis
  • Emily L. Kosmalski, E.P., Group Manager, Environmental, Atlanta
  • Daniel B. Mahrt, P.E., Department Manager, Geotechnical, Minneapolis and St. Paul
  • Paul J. (Jared) Mechetti, P.E., Sector Leader – Mission Critical & Digital Infrastructure, Sacramento
  • Anjula Mittal, PMP, Manager, Applications, Olathe
  • Vu T. Nguyen, EI, RRC, RWC, BECxP, CxA+BE, Senior Project Manager, Facilities, Charlotte
  • Scott R. Parker, Department Manager, Environmental, Seattle
  • Cheryl C. Pedraza, P.E., Department Manager, Geotechnical, Fort Worth
  • David C. Reynolds, P.E., Department Manager, Environmental, Minneapolis
  • Robyn R. Sargent, CHMM, Office Manager/Department Engineer, Environmental, Billings
  • Philip T. Schiele, P.G., Department Manager, Materials, Omaha
  • Ann M. Scott, Ph.D., RPA, Manager, Environmental Planning Group, Austin
  • Joseph E. Starr, P.E., Client Development Manager, Raleigh
  • Gregory J. Taddicken, P.E., Office Manager, Boise
  • Benjamin W. Taylor, P.E., P.G., Regional Manager, Louisville
  • Josiah D. (Sy) Winkelman, P.E., Department Manager, Materials, Salt Lake City

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