WDC, or Workforce Development Center, was the first new addition to the permanent campus. This building was erected in 2007 at the north end of the campus grounds, and opened for classes that fall. It is intended to be a "green" building, with heating and cooling being provided by geothermal energy and other eco-friendly technology. Standing over three stories tall, including the fourth floor maintenance area, it is the tallest building on campus, and is where the vast majority of technology-focused classes are held.