He does a good job.
One thing seemed a little vague. He asked about the RCC in the canyon having retaining walls on the left side (7:10). The answer was “the design has training walls on both sides”. This sounds like there is an intention to use the canyon, that the canyon will be filled with RCC to an already determined level, that it will have walls, and that it will be used. I thought the plan was to reconstruct the lower spillway and join it to the upper spillway, that the canyon would be used if they were behind schedule. Also, that the RCC was to establish a competent foundation for the reinforced concrete spillway, to fill the plunge at the break, not to completely fill the canyon.
Then again, maybe I misunderstand the plan.
I understood it to be phase 1(this year) and phase 2(next year). But I think they are counting on the canyon for relief beyond a certain flow rate. Not sure how they are going to get the water to go where they want since so far the have shown a complete inability to do that.