The laugh about that is that the repository was to be built in Yucca Mountain, which is right next to Yucca Flats.
Yucca Flats is the US's underground bomb testing area, where a large number of actual fission and fusion bombs have been detonated underground, producing far more "in-ground" radioactivity than any possible storage in Yucca Moutain.
The protest against Yucca Mountain had one motive. To kill nuclear power. The claims were false and the hysteria was similar to “fracking will ruin the groundwater supply”.
Nuclear energy has been and will remain the best option where sufficient hydro-power is not available. It is clean, plentiful, controllable, scalable, and most efficient.