seawall. all buildings, infrastructure and activity along the northern waterfront, extending back to 1ststreet, are possible by the embarcadero, from aquatic park at the north, due north, down around to the ballpark. and it was built more than 100 years ago over several decades, and the project manager from the port can give you a wonderful history of this, but i mean, it's kind of crazy when you hear the story basically it's just fill, gravel and rock and everything, just smushed in and made a port behind a wall. it's amazing our city stands on it, but it does. and the seawall needs repair and strengthening. there are a number of challenges facing the northeastern waterfront. from the acute risk of earthquake, one rendering of how an earthquake might damage the waterfront. basically the soil on which it stands is prone, and the wall itself may push bay ward by five feet. and the piles that support the piers buckle, and the bulkhead buildings would be significantly damaged and all the horizontal infrastructure that runs right along the waterfront that is vulnerable as one. that's one nightmare and you have also the flooding t