The Executive shall approve concession agreements with private persons to provide aeronautical services to the public when the Executive deems concession agreements to be in the best interests of Pierce County.

Prior to entering into a concession agreement, there shall be advertisements of a request for proposals in the same manner as a request for bids for construction of public works.

Prior to award of the concession agreement, there shall be written comparative evaluations of proposals received based on written standards and method of selection sent to those who request plans and/or specifications for the concession.

Award of a concession agreement shall be based on the written evaluations of the proposals received, and although the least dollar cost, or greatest financial benefit to Pierce County, shall weigh heavily in the award of a concession agreement, award of a concession agreement shall be to the person whose proposal promises to provide the best overall services to the public.