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A large oak tree, estimated at more than 200 years old, collapsed amid the weekend rainstorm and landed across Foothill Road south of Castlewood Drive in unincorporated Pleasanton early Sunday morning.

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CalMatters is a Sacramento-based nonpartisan, nonprofit journalism venture committed to explaining how California's state Capitol works and why it matters. It works with more than 130 media partners throughout the state that have long, deep relationships with their local audiences, including Embarcadero Media.

Jeremy Walsh is the editorial director of Embarcadero Media Foundation's East Bay Division, including the Pleasanton Weekly, LivermoreVine.com and DanvilleSanRamon.com. He joined the organization in late...