Harris Williams & Co., a preeminent middle market investment bank focused on the advisory needs of clients worldwide, announces the sale of QualaWash Holdings, LLC (QualaWash), a leading provider of environmental services to the bulk transportation industry, to Roark Capital Group (Roark). QualaWash was a portfolio company of KLH Capital (KLH). Harris Williams & Co. acted as the exclusive advisor to QualaWash. The transaction closed on June 29, 2012 and was led by John Neuner, Brian Lucas, Luke Semple and Marshall Croft from the firm’s Richmond office.