Q-

Where did you find the reference to the "50-foot" tsunami wall for the San Onofre nuclear plant? I've only found references to a 25-foot tsunami wall such as in this Los Angeles Times article:

"Operators of the concrete-domed San Onofre nuclear plant Monday were trying to reassure jittery Southern California residents that the nuclear disaster unfolding in Japan won't happen here.

The 84-acre generating station in the northern corner of San Diego County is built to withstand a magnitude 7.0 earthquake, said Gil Alexander, a spokesman for the generation station's operator, Southern California Edison. That is greater than the 6.5 shaker that scientists predicted could strike the plant before it was built 42 years ago, he said. But it's less than the 8.9 quake that hit Japan last week.

A 25-foot-high 'tsunami wall' of reinforced concete was also erected between the plant and the adjacent ocean, a height based on scientists' best estimates of the potential threat, he said. "

It would be more reassuring if there were such a wall.

Charley Noble