I live in Silicon Valley, and one thing I noticed while house hunting is that the entire Google Campus, including the entire early campus sits atop a superfund site due to groundwater contamination from solvent tank leaks from early chip manufacturing sites.
There were even reports from the early 2000s of workers getting nauseous within the offices, and the former YouTube CEO passed away recently prematurely from lung cancer (not saying that's related, but if we're looking at correlational studies...)
That would be a wild RTO-related lawsuit.
Were you a Google employee forced to return to office? You may be entitled to compensation.
https://www.mv-voice.com/news/2013/02/21/toxic-vapors-found-...
Same for several Netscape buildings on Ellis St back in the day. Not sure which companies are in those buildings now but I remember the pulme mitigation pipework being installed in the parking lots. Former Fairchild site.
I remember before google the area near rengstorff/shoreline was a huge hill over a garbage heap with lots of PVC vent tubes sticking out of the ground.
It was a huge waste disposal area.