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5/2/2007--Seattle, WA, USA..Seattle city employee, Tommy Chung, inspects the rooftop garden built at the new Seattle City Hall. Seattle's City Hall is part of a three-block area known as the Seattle Civic Center, and is expected to meet or exceed Silver LEED certification ('Leadership in Energy and Environmental Design', the Green Building Rating System, developed by the U.S. Green Building Council, provides a list of standards for environmentally sustainable construction) for energy conservation and the rooftop garden helps reduce heating and cooling costs for the building, as well as helping reduce the 'heat island' affect in downtown Seattle, thereby reducing energy consumption...Seattle?s new City Hall was designed to express the spirit and values of Seattleites and to reflect the natural environment. Sustainably built facilities in the Hall are made from durable materials and have flexibility to adapt to future needs. Often referred to as ?long life and .loose fit,? this approach helps get the most out of resources and avoid waste, or even the need to recycle. The building is designed .to take advantage of natural daylight, decreasing the need for artificial light. Different façade treatments are used to respond to varying .conditions of the site and the sun, shaping a building that responds to nature. Special floor diffusers deliver fresh air deep into the building and allow the occupants to control the ventilation and temperature for personal comfort. Displacement systems have higher energy efficiency due to lower distribution fan speeds and less extreme heating and cooling air temperatures. The buildings elevators use a direct drive, permanent magnet motor that decreases energy use by up to 50% over standard hydraulic elevators.  By weight, over 75% of construction waste generated  from the building was recycled. ..Environmental issues rate highly for Seattle?s citizens.  When asked what makes the Northwest different from the rest of the country, Seattle res