I imagine the NoCal gig was in Mountain View. It's often listed as San Francisco on t-shirts, even though it usually takes at least an hour to get to mountain view from SF (it's about 35-45 miles south of San Francisco on the Peninsula and about 10 miles north of San Jose right near Great America Amusement Park, and Moffett Naval Air Station (which closed in the early nineties).
I do know that they played in Mountain View during the Republic tour at the Shoreline Ampitheatre in July of 1993, and I think they played there during the Area One tour with Moby as well. Really when people play outside, they usually play at the Shoreline Ampitheatre (15-20,000 capacity) or the Concord Pavilion (which is probably a tougher draw since its a little outside the bay area). SF gigs, and Oakland/Berkeley gigs (unless they are at the Oakland Coliseum, or the basketball arena right beside it, I saw the Beastie Boys there in '98)tend to draw bands with smaller audiences, with the exception of stadium gigs, bands that are too big to play clubs play the Pavilion in Concord, or the Ampitheatre in Shoreline when they are in NoCal, and if they've got an enormous audience (Metallica and Dave Matthews are good examples in the bay area) they play at the sports stadiums. Dave Matthews played the first ever gig at new Pac Bell park (i think the capacity is something between 38-42,000) in 2001, all the yuppie/dot commers bitched and moaned about the noise, but that's what happens when you decide to spend six figures on a freaking apartment as a status symbol in SF (no matter how bad the rent is where you are, it's inconceivable that it could be worse than rents in the bay area, particularly in that area of SF, I've got to get out of this area).