Fairfax Co. Office of Public Private Partnerships (OP3) Share: Government Fairfax Co. Office of Public Private Partnerships (OP3) 12000 Government Center Pkwy., Ste 432 Fairfax, VA 22035 (703) 324-5171 (703) 222-9198 (fax) Map What's Nearby? Distance: 5 10 15 20 25 50 mi.