Members of the Knoxville Chamber of Commerce and Streetscape Committee are cleaning up the alleys around the Knoxville Square Saturday starting at 8 a.m., and volunteers are needed. Cleaning the surrounding alleys and cutting weeds between buildings are some of the tasks scheduled to get the city ready for the 49th Annual Knoxville Nationals next month. Any residents interested should meet at 8 a.m. Saturday in the parking lot at the intersection of Main and First Streets, and bring their own gloves and clippers if possible.