This has got to be wrong. Have you seen the "Moffett Towers" buildings that are actually bordering Moffett Field? Google's buildings are 2 floor max; Moffett Towers has 6-8 floor buildings.
http://www.mountainview.gov/civicax/filebank/blobdload.aspx?...
Lesson: it's a mistake to design to the limit.
I suppose in some idealized, maximally YIMBY world, the difference between 8 stories and 10 represents some horrible market interference by "NIMBY asshats". But in the real world, Google would be foolish to build above 8 stories no matter what the Mountain View city council says. The Precise Plan just reflects the practical limits of building in that area.
I edited my comment to remove that part.