William Peterlein, P.E.President & Principal Geotechnical Engineer Craig Coolidge, P.E.Vice President & Principal Geotechnical Engineer Erika Stewart, P.E.Senior Geotechnical Engineer Kevin R. Farrar, P.L.S.Senior CAD Technician Shawn Floyd Operations Drilling Manager Colleen Sullivan, E.I.Geotechnical Engineer Jason Barnes, E.I.Geotechnical Engineer Ellis DixonGeotechnical Engineer Lauren DicksonGeotechnical Engineer Austin ManzellaAssistant Driller Technician Roy GrottonMechanic Judith MetzgerOffice Manager