Legit Reviews reports historic pollution has been found at the site of Google's QD6 and QD7 buildings in Mountain View, California. These buildings sit on top of ground where Fairchild Semiconductor started semiconductor production in 1956 and are polluted by a number of toxic chemicals, including trichloroethylene, 1,1,1-trichloroethane, 1,1- and trans-1,2-dichloroethylene.
The contamination was believed to have resulted from leaking underground tanks. Just down the street Intel Corp.'s and Raytheon Corp.'s Mountain View Plants were doing similar things and were also closed and made by the EPA to start cleaning up the mess. It was so bad that the area became a Superfund cleanup site! The bad news is that despite using special air filtration systems at the Google offices located on the ground above where these contaminates once were, the readings of Trichloroethylene (TCE) are too high. 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.