As a result of concerns about the emissions which occur when gasoline vapors are displaced from fuel tanks during the refueling of motor vehicles, EPA has been examining the need for the control of these refueling emissions and the methods to do so. One such method involves the collection on the vehicle of the displaced hydrocarbons and the measurement of the effectiveness of the refueling vapor control system. The type of control is referred to as onboard control of refueling emissions. The report presents a summary of the comments on the recommended refueling test procedure, EPA's analysis of the issues raised by the commenters, and the resulting changes made to the recommended test procedures.