Final Research Report Agreement T4118, Task 08 BST Protocol Bituminous Surface Treatment Protocol by Jianhua Li Research Assistant Joe P. Mahoney Professor Stephen T. Muench Assistant Professor Department of Civil and Environmental Engineering University of Washington Linda M. Pierce State Pavement Engineer Washington State Department of Transportation Washington State Transportation Center (TRAC) University of Washington, Box 354802 1107 NE 45th Street, Suite 535 Seattle, Washington 98105-4631 Prepared for Washington State Transportation Commission Department of Transportation and in cooperation with U.S. Department of Transportation Federal Highway Administration April 2007