"Designed by the Portland, Oregon firm of Fletcher Farr Ayotte, the Hilton Vancouver is 30% more energy-efficient than city code requires. Green measures include CO2 sensors that adjust the temperature in vacant meeting rooms and hallways, a heat-reflecting roof, painting and carpet made from low-emitting materials, a construction recycling rate of 75 percent, water-efficient landscaping, and operable windows."
Thanks to Julie Taraska