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"A local environmental group is rallying its members and supporters to appear at tonight's San Clemente City Council meeting to question whether it is safe to restart the shut-down Unit 2 reactor at the San Onofre Nuclear Generating Station. The City Council has scheduled an appearance by Greg Warwick, senior Nuclear Regulatory Commission resident inspector at San Onofre, to report on safety at the power plant just south of town. Southern California Edison shut off the reactor in September for refueling and to swap out two aging 640-ton steam generators. On Jan. 19, Gary Headrick, founder of San Clemente Green, asked for the city's support in delaying reactivation of Unit 2 until there is assurance it is safe. He cited reports about concerns of some employees at the plant, air pockets in some welds on one of the new steam generators and NRC investigations into safety practices at San Onofre."

A new, $64 million study of earthquake fault patterns around the San Onofre nuclear plant will be proposed Friday by Southern California Edison, its scope broadened and its cost estimate more than doubled because of the nuclear disaster in Japan. Edison will propose the study to the California Energy Commission; if approved, it would be paid for through customer rates, although Edison says that would add up to less than one percent of present overall rates. ADVERTISEMENT More from Science Rocket launched from Vandenberg Sunnier skies kick off warming spell Toxic mystery unfolds in Newport Beach The study will use state-of-the-art technology, characterizing in three dimensional detail the sea floor near the coastal plant and the geological picture beneath the land surface. Edison is still evaluating what type of technology to use, but sonar would likely be used to map the ocean floor near the nuclear plant, while seismic vibration measurements as well as lidar, which uses light beamed from planes, would be used on land.