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The U.S. Green Building Council Arizona is honoring the Old Main renovation and restoration project for its outstanding leadership and innovation in raising the bar for sustainable building design, and for gaining LEED certification.  (Photo credit: John de Dios/UANews) The U.S. Green Building Council Arizona is honoring the Old Main renovation and restoration project for its outstanding leadership and innovation in raising the bar for sustainable building design, and for gaining LEED certification.