For lien sale purposes, the code enforcement officer shall determine the estimated value of vehicles and maintain proper documentation and give notifications as required by the California Vehicle Code with respect to vehicles which are abated and removed under this Chapter. Code enforcement shall determine whether the estimated value of vehicle that has been ordered removed, towed or stored is three hundred dollars ($300.00) or less; or over three hundred dollars ($300.00) but less than or equal to one thousand dollars ($1,000.00); or over one thousand dollars ($1,000.00). All regularly employed and salaried employees of code enforcement (including contract employees) are authorized to make appraisals to determine the value of vehicles abated or removed under this Chapter.