Interiors & Sources, Jan. 2014.
http://www.interiorsandsources.com/article-details/articleid/16862/title/baltimore-ravens-stadium-scores-leed-points.aspx

"The Baltimore Ravens might as well have just won the Sustainability Bowl. In partnership with the Maryland Stadium Authority (MSA), the organization has earned a LEED-EB Gold certification for M&T Bank Stadium."