http://www.sacbee.com/news/state/california/water-and-drought/article159789184.html
They’ve demolished most of Oroville Dam’s troubled spillway. What’s next?
By Dale Kasler
dkasler@sacbee.com
July 05, 2017 2:47 PM
The preliminaries are just about over. Permanent structural repairs are about to begin at Oroville Dam.
Five months after an unprecedented emergency forced a mass evacuation, state officials said Wednesday they’re ready to start replacing the now-demolished lower portions of Oroville’s main flood-control spillway.
Construction contractor Kiewit Corp. plans to install the first slabs of concrete Thursday in the lower 350 feet of the spillway chute. The so-called “leveling concrete” will create a smooth foundation for structural concrete that will be poured on top, said Jeff Petersen, Kiewit’s Oroville project director.
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From a distance, those vertical cement “stoppers” look like they could be grave stones...