Specifications include, but are not limited to: Asphalt cement and emulsions shall be from the Approved Materials List. Asphalt shall be prepared by the refining of petroleum. It shall be uniform in character, free from water, and shall not foam when heated to 350ºF (177ºC). Storage tanks, piping, retorts, booster tanks, distributors and other equipment used in delivering, storing or handling asphaltic materials shall be kept clean and in good operating condition and shall be operated as to avoid contamination of the contents with foreign materials. Test methods shall be the latest in effect. Viscosity, 50ºC (122ºF), SSF; Residue by Distillation, % by Wt; Oil Distillate by Volume, %; Sieve Test, Retained on No. 20, %; Settlement, 5 Days, %.