Gregory Clark joined Keller and Heckman in 2010. He practices in the area of environmental law.
While in law school, Mr. Clark served as an articles editor for the Virginia Journal of Law and Technology. Prior to law school, Mr. Clark worked as an EPA contractor, primarily for the Water Security Division in the Office of Groundwater and Drinking Water. In this arena, Mr. Clark worked on validation of molecular biology and microbiology methods and on emergency preparedness. He led development of what is now EPA's Water Laboratory Alliance Response Plan, which was developed to aid laboratories in responding collaboratively on a regional scale to natural, intentional, and unintentional water contamination incidents.