Events The Virginia Procurement Technical Assistance Center seminars and local events for each of its centers can be accessed by clicking on the following link which is most convenient to your locale: Northern virginia:  http://novaptac.org/eventcalendar/calendar.asp#nova Central Virginia:  http://novaptac.org/eventcalendar/calendar.asp#cv Hampton Roads:  http://novaptac.org/eventcalendar/calendar.asp#hr