WASHINGTON — The U.S. Green Building Council has opened the first public comment period on LEED 2009, the next evolution of the LEED green building certification system. LEED 2009 represents a reorganization of the existing LEED rating systems for commercial buildings, combined with a series of major technical advancements focused on improving energy efficiency, reducing carbon emissions and addressing other environmental and human health outcomes, according to the USGBC.

Detailed information about specific proposed technical changes to the rating system can be found in the number of background documents that accompany the public comment forms on USGBC’s Web site www.usgbc.org. Further information about the expansion of the certification process and improvements to LEED Online as well as future technical improvements, including the integration of Life Cycle Assessment into LEED, will be forthcoming in late summer.

The public comment period will be open for 30 days, from May 19 through June 22, at 5:00 pm PST.

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