Cemstone has announced that John D. Lee, P.E., Engineered Sales Representative, is now a Leadership in Energy and Environmental Design (LEED) Accredited Professional. The LEED Green Building Rating System is the national rating system for the design, construction and maintenance of sustainable, highperformance buildings. The LEED rating system was developed by the U.S. Green Building Council. As a LEED Accredited Professional, Lee is accredited to assist Cemstone customers on the wide range of requirements needed for their projects to achieve a LEED Green Building Certification. He is able to provide a complete framework for assessing building performance and the implementation of strategies for sustainable site development, water savings, energy efficiency, materials selection and indoor environmental quality related to the use of ready-mixed concrete and concrete related products. To learn more about Cemstone, visit www.cemstone.com or call (800) 236-7866.