San Francisco International Airport has made clear its
dedication to the environment. Its 2005 annual review provides
examples of the airport's efforts, including increasing the number
of airport vehicles that use clean power and reducing
post-emergency pesticide and herbicide use.
So when United Airlines decided to replace the 20-year-old roof
system on its maintenance facility—which had been
experiencing leaks—at San Francisco International Airport,
energy efficiency was an important factor. United Airlines also
wanted a durable roof system that effectively would protect the
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