The resort will incorporate a variety of environmentally minded practices and sustainability elements, making MGM National Harbor a premier eco- luxury destination. “MGM National Harbor embodies the Company’s dedication to environmental leadership in our industry.” Achieving our ninth LEED certification exemplifies MGM’s long-standing effort to implement sustainable and responsible practices across our resorts,” said Cindy Ortega, Senior Vice President and Chief Sustainability Officer for MGM Resorts International. “Environmental responsibility is a commitment that extends across all levels of our organization. Meeting the rigorous environmental standards of this designation is a testament to the complete integration of sustainable principles throughout the design and construction of MGM National Harbor. The LEED Green Building Rating System is the nationally accepted benchmark for the design, construction and operation of high-performance green buildings. Located minutes from Washington, D.C., in Prince George's County, Maryland, the resort will is scheduled to open Dec. Green Building Council has awarded the Leadership in Energy and Environmental Design™ (LEED) Gold certification to MGM National Harbor, the company’s newest resort. MGM Resorts International (NYSE: MGM) today announced that the U.S.