with this report. trace, how would the power plant where you re standing right there, one of the few in california, how would it fare if we compare, have a comparable disaster to the one we saw in japan? reporter: jenna, the authorities believe it would farewell but there are a number of parts to that answer. we re talking about a nuclear power plant the biggest in southern california. powers 1.4 million homes here. just like the nuclear power plant in swrap pan, built right on the ocean, in very earthquake-prone california. we had a 4.7-magnitude earthquake here last year the authorities believe the biggest earthquake that could hit the area would be 6.5 magnitude. they have built the thing to withstand a 7. you see the concrete domes behind my? those are concrete, three to seven feet thick with reinforced steel. if there was a tsunami, on the back end of that earthquake they believe it would only be as high as 25 feet. so they have built the tsunami wall at 30 feet. but again, thes