Prior to any action by an acquisition agency to approve a major acquisition of conservation lands, the acquisition agency shall contract for at least one independent appraisal of the fair market value of the land. The appraisal shall be conducted by a qualified member of the Appraisal Institute who is licensed pursuant to Part 3 (commencing with Section 11300) of Division 4 of the Business and Professions Code. The appraisal shall be prepared pursuant to the Uniform Standards of Professional Appraisal Practice.