. >> elaine forbes is the director of the port of san francisco.sday, the commission heard the result of an extensive study looking at the seismic risk of the sea paul. from michiganer man's wharf to the mission creek. the results are not reassuring. >> the study shows that the sea wall would move bayward than could cause a lot of damage to historic resource, to the embarcadero and we need to fix that >> sea wall which helped provide the foundation for many buildings, including the ferry building was built more than 100 years ago in what was described at weak, bay mud. the cost to shore it up could cost $3 billion. >> it's expensive to do because it's hard to get here. we have to get through a very solid concrete dike to shore up the soil underneath the sea wall. >> those waiting to hop on the ferry told us they had no idea of the potential danger lurking below and hope there is a solution. >> you know, i knew there was concern, but now, it raises a serious amount of concern for people living in the san francisco area in particular. >> while the en