Wal-Mart Environmental Concept Stores

In 2005 Wal-Mart set up experimental stores in Colorado and Texas to address environmental and sustainability issues, they are now starting to publish data from this experiment. Any further information?

" ... In order to learn more about how Wal-Mart, and the entire industry, can improve in the area of environmental sustainability, this store and one in McKinney, Texas will experiment with materials, technology and processes which will reduce the amounts of energy and natural resources required to operate and maintain the store, reduce the amount of raw materials needed to construct the facility and substitute, when appropriate, the amount of renewable materials used to construct and maintain the facility ... "