Herndon - Corporate Office
2553 Dulles View Drive, Suite 300
Herndon, Virginia 20171
Phone: (703) 430-7500
Fax:       (703) 430-0889
Contact: Young Ho Chang, P.E.
Executive Vice President
yhchang@atcsplc.com

Culpeper - Branch Office
767 Madison Road, Suite 107
Culpeper, Virginia 22701
Phone: (540) 825-1369
Fax:       (540) 825-1520
Contact: Joseph Coppedge, L.S., Branch Manager
jcoppedge@atcsplc.com

Annapolis - Branch Office
304 Harry S. Truman Parkway, Suite F
Annapolis, Maryland 21401
Phone: (410) 224-7497
Fax:       (410) 224-7498
Contact: Ed Keohane, P.E., Branch Manager
ekeohane@atcsplc.com

Waldorf - Branch Office
7 Post Office Road, Suite G
Waldorf, Maryland 20602
Phone: (301) 870-4530
Fax:       (301) 843-1262
Contact: Jim Whitehead, L.S., Branch Manager
jwhitehead@atcsplc.com