The U.S. National Whitewater Center is adding to its land holdings in a big way. This week, the nonprofit outdoor recreation center, located just west of interstate 485, purchased 488 acres around its facility for $5.3 million from Clariant Corp. About half of the acreage is on either side of Whitewater Center Parkway, between the recreation center and Belmeade Drive, while the remainder is located to the north, between Belmeade Drive and Mt. Holly Road. A Whitewater Center executive did not return...