Section R315-315-9 - Waste Asphalt(1) The preferred management of waste asphalt is recycling. Recycling of waste asphalt occurs when it is used: (a) as a feedstock in the manufacture of new hot or cold mix asphalt;(b) as underlayment in road construction;(c) as subgrade in road construction when the asphalt is above the historical high level of ground water;(d) under parking lots when the asphalt is above the historical high level of ground water; or(e) as road shoulder when the use meets engineering requirements.(2) If waste asphalt is disposed, it shall be disposed in a permitted landfill.Utah Admin. Code R315-315-9