Less than six months after its previous acquisition, Olathe, Kansas-based Terracon has made two more. The employee-owned consulting engineering firm acquired Florida-based Environmental Services Inc. (ESI) and Georgia-based Geotechnical & Environmental Consultants Inc. (GEC). ESI, a full-service environmental consulting firm, provides services such as environmental permitting and environmental site assessment. In addition to its Jacksonville headquarters, it also has offices in Raleigh, N.C....