On April 8, 2005, Washington Governor Christine Gregoire signed a bill mandating that all new public buildings meet the US Green Building Council’s Leadership in Environmental Design (LEED) Silver standards. Washington is the first state in the country to require such standards. The law will apply to new public facilities over 5,000 square feet, as well as major renovation projects. A building can achieve a LEED standard by earning points based on energy efficiency, use of sustainable materials, and other environmental attributes. There are currently over 1,900 buildings in the United States completed or in progress that meet one of the LEED standards.
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Read about the LEED standards