I checked whether CA has similar Nukes like that of Fukushima Daiichi Nukes.
The one causing serious trouble is a notorious one. And there are 23 such nukes in United states.
It looks different.
http://www.eia.doe.gov/cneaf/nuclear/state_profiles/california/ca.html
However CA has a near-melt down accident in late 50's once.
We should watch.
Because they max design magnitude of the earthquake is 7 or so,
They can not withstand MEGA earthquake like that of Japan.
p.s.
The output power of those of California is 10 times bigger than that of Fukushima!
The potential danger is much high in California than in Japan.