What do you think of this guy, specifically, what he is saying in this "video"?
“... What do you think of this guy ...”
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I think he is on crack.
Note: Scott Cahill's wife has been the president of a construction company that specialized in dam inspections and repairs. An interesting "knowledge base" in a married expertise on dams.
As far as the "shock" vibrations felt on Kelly ridge & the pets responding with anxiety... this could be from the blasting.
Regarding a "hum", it would be useful if more information was described or provided by the locals. I always find credible pieces of information from locals that may be overlooked by "experts".
For example, UELF (ultra extremely low frequency), and upper harmonics, in a mechanical manifestation, are able to conduct long distances and create acoustic (sound) standing waves.
The Hyatt power plant is deep in the rock below Kelly ridge. If for example, the new refurbished and more efficient turbine just installed has blade geometries that create a new form of a harmonic at a 3600 rpm operation, the harmonics could couple to the rock foundation in multiple ways. One is via a cavity chamber resonance in a number of the physical geometries of the tunnels, the cavern, the piping, etc.
As UELF waves & some of the upper harmonics may not be detectable nearby (wavelengths in hundreds of feet at the velocity of the medium it travels within), these harmonics may be convergent in areas that end up affecting people as "sounds".
A restaurant & dance disco called "Earthquake Ethel's in Beaverton Oregon" would use a PDP-11 computer to coordinate the internal sound amplifiers & speakers in the building to resonate the building at its primary resonant frequency - thus re-creating a magnitude 3 equivalent shaking inside. It was cool. They did this every so often during the hours. However, the neighborhood residents were all up in arms as the acoustic sound waves from this effect developed at a distance away and would strongly resonate in different places in the neighborhood (wavelength convergence). Eventually, the residents complained enough to the city council and the restaurant closed.
If there was truly a "hum" effect going on, I would investigate it in a different way rather than immediately jumping to a complex phased array system thousands of miles away. (yes, I am familiar with these particular phased array systems - it is part of my research).