NBC Bay Area Video on the Toxic waste sites all over Silicon Valley. They had an interactive map but they took it down from their website.
Original article: NBC map showing the hundreds of sites on a map so you can see if you are affected by the pollution of Silicon Valley. https://www.nbcbayarea.com/brchannel/Map-The-Chemical-Legacy-of-Silicon-Valley-258950021.html From this map you can see that Apple and Google Headquarters are located on 2 superfund sites each where the polution is TCE Trichloroethylene where there are restrictions that require no person under the age of 21 can occupy any building built on the properties.
There is Kaiser Permanente building for Children and Adult psychiatric care built right on top of the street address of three sites and two of them are under Apple which is across the street. Note the tabs to show the daycare facilities that are on the purple areas that are mapped out to show the pollution.
The Map Article was taken down by NBC Bay Area.