MOUNTAIN VIEW (CBS SF) — One of Silicon Valley’s dirty secrets is coming back to haunt Google with toxic vapors.
TCE, or trichloroethylene vapors were detected at the company’s offices in Mountain View.
Google’s buildings QD6, and QD7, which sit on North Whisman road sit on top of what used to be Fairchild Semiconductor, Intel, Raytheon, and other computer chip makers.
The problem began when those chip makers dumped thousands of gallons of the toxic solvent into the ground, contaminating the water.
When Google moved in, they installed state of the art filters, and conducted rigorous air quality testing.
The normal range of TCE is five micrograms per cubic meter.
Readings as high as 8 micrograms per cubic meter were found in the Google buildings.
Employees were exposed for several months, but the EPA says it takes decades of exposure to cause problems.