LEED®, which is an acronym for "Leadership in Energy and Environmental Design," is a rating system, developed by the U.S. Green Building Council, which serves to promote sustainable buildings, by awarding points for reducing energy use, improving indoor environmental quality and promoting a whole-building approach to sustainability. LEED® enables "Credit Points" to be earned in seven (7) categories. One of these categories, "Materials and Resources," enables points to be earned for "Recycled Content." The original version of this document was published in 2010. This version of the document was updated and published in September 2023.