Agencies
- Maryland Stadium Authority
- Maryland Port Administration
- Maryland Environmental Services
- Maryland Department of General Services
- Maryland State Highway Administration
- DC Water and Sewer Authority
- Washington Suburban Sanitary Commission (WSSC)
Cities & Counties
- City of Annapolis
- City of Baltimore
- City of Frederick
- City of Reading
- Town of Rising Sun
- Anne Arundel County
- Baltimore County
- Carroll County
- Cecil County
- Frederick County
- Howard County
- Prince George’s County
- Talbot County
- Washington County
- Wicomico County
Department of Transportation
- Maryland Department of Transportation (MDOT)
- Delaware Department of Transportation (DelDOT)
- District of Columbia Department of Transportation (DDOT)
- Virginia Department of Transportation (VDOT)
School Systems
- Baltimore City Public Schools
- Baltimore County Public Schools
- Prince Georges County Public Schools
- Salisbury State University
- University of Maryland
Private Clients
- ALCOA
- BGE
- Consol Energy (CNX) Baltimore Terminal
- CSX Marine Terminal
- PEPCO
- Solo Cup