New positions
* Biohabitats Inc. named Karen Pugh director of environmental services for the Towson-based ecological assessment, planning and restorations firm.
* Chesapeake Biological Laboratories, a Baltimore biopharmaceuticals manufacturer, appointed Henry Clark senior project manager and Richard Rush as clean room manager.
* Prime Employee Assistance Program announced that Paul T. Geckle was selected as director of counseling. Added to the staff were: Roxann S. Karopchinsky, affiliate coordinator, and Stephanie A. Lysakoski, administrative services coordinator.
Advertising and PR
* Cornerstone has chosen Susan Shearer, formerly of Richardson, Myers & Donofrio, as media buyer/planner for the Baltimore regional advertising agency.
* Freed & Associates announced the appointment Karen E. Kreitlow as an account coordinator.