san francisco, dune sand, colma, and the others. very simple. because san francisco is so young. -- because san francisco is so young, it is riddled by faults. i have a map that shows the faults across the bay area and san francisco. the granddaddy of all of these is the san andreas fault. it is the longest. it can generate the greatest earthquakes. >> it is just south of san francisco. it goes offshore down here. >> from my house to the fault is about 3 miles on average. >> the closest area in san francisco to the fault is this area here in the southwest part of the city. people said that the closer you are, there are conditions that exacerbate issues. >> the fault's effect on development depends on the fault type and soil component. the san andreas is the main fault. there is the hayward fault. the difference between the two is that the san andreas is predominantly offshore. the hayward fault actually crosses beneath populated areas and poses a larger threat. as we speak, there is a 67% probability of a major earthquake on one of these faults

ago, we reported about a mix-up on a grave marker for a man buried at the hills eternity cemetery in colmait incorrectly said he was on the left side of the plot. he is on the right. the mistake was uncovered when the widow passed away. since our story the cemetery and the company that sold the tombstone agreed to split the cost of reengraving the marker. it's now correct and the family is resting in peace. >>> and remember, if you have a consumer problem, give us a call 1-888-5-helps-u or head to cbssf.com and click "connect." >> nice to have resolution. >> it is. >> reporter: good way to end the week. >> absolutely. >>> thanks. lighting up right outside city hall and the cops can't do anything about it. the bay area city hosting the nation's first pot fair. >>> the character of the child will change completely. >> they love music just not so close to their home. what a member of the grateful dead is proposing that's making some waves in marin county. coming up in two minutes. ,, ,,,,,,,,,,,,,,,, oaklan >>> medical pot smokers are invited to light up outside oakland city hall this weekend