From Durham: Head South On Nc-147 S (Durham Freeway), Take Exit Toward Chapel Hill And Merge Onto I-40 W. Take Exit 270 At Us-15/501 S Toward Chapel Hill. Continue On Us-15/501 S For Approximately 2.5 Miles. Turn Right Onto S Estes Drive, Drive Past Pond And Go Past Building F To Get To Building G. Unit Is Top Right.