Section R307-341-4 - Limitations on Use of Cutback AsphaltNo person shall cause, allow, or permit the use or application of cutback asphalt, or emulsified asphalt containing more than 7 percent oil distillate, as determined by ASTM distillation test D-244, except as provided below:
(1) Where the use or application commences on or after October 1 of any year and such use or application is completed by April 30 of the following year;(2) Where long-life (longer than 1 month) stockpile storage of patch mix is demonstrated to the director to be necessary;(3) Where the asphalt is to be used solely as a penetrating prime coat;(4) Where the user can demonstrate that there are no emissions of volatile organic compounds from the asphalt under conditions of normal use;(5) Where the use or application is for the paving of parking lots smaller than 300 parking stalls.Utah Admin. Code R307-341-4