. >> i saw a map that this area was severely shean in 1906 although almost no houses were here.e can expect the same action? >> i think you have to different differentiate, but you may not get as much damage here as you would at the shore line or san francisco bay. this is a rough site -- >> if you're going to be out in richmond, it's right there. >> yeah. i have heard that along ocean beach here and a few blocks in, there are some special hazards because of the fact that there's water underlying the ground and so on. is that -- >> yeah. there are hazards associated with anu$quake. obviously the firstçó one is ground shaking which we talked about. then there are other gee owe logic hazards and that's where the sand turns to quick sand, especially the sands that are beneath the water level. other hazards associated is lateral spedding. after the soil lick -- becomed and flows, the dense --ification. >> if i eat a box of cereal and it's full, it's two inches down. >> that's true. damages associated with those phenomenas are severe. you've seen pictures along valencia street where