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The preliminary magnitude is a 3.8. It hit about three miles south of Pleasanton.
One caller in Livermore described it as a minor jolt while another caller says it was like a violent shake.
ABC7 received quite a few calls in the newsroom.
After the ABC7 News web department sent out a tweet about it, lots of people weighed in saying they felt it pretty sharply in some areas.
However, although a lot of people felt it, there appears to be no damage.
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