The Home Depot operates 1,976 stores in the United States, nine of which are in Alameda County. In 2007, the company introduced Eco Options, a program that promotes third party certified, environmentally preferable products that include many recycled-content building materials such as insulation, carpets, tile, particleboard and flooring. In 2012, The Home Depot converted their entire line of interior paint to low or no volatile organic compound (VOC) emitting paint, subsequently eliminating 27 million pounds of VOC released into the atmosphere in 2012. The Home Depot stores also accept hard-to-recycle items from customers, including CFLs, rechargeable batteries and holiday lights. San Francisco Bay Area stores carry only Forest Stewardship Certified (FSC) dimensional lumber, sold at conventional lumber prices.  The Home Depot pursues other sustainability improvements, outlined in their annual sustainability report.