All of the subdivision improvements required shall be constructed in accordance with the specifications therefor which are contained in the portion of the appendix to this division entitled “Design and Improvement Standards.” All of the subdivision improvements required by the County shall be carried out in full compliance with the specifications as set forth or referred to in said appendix. Nothing contained in said appendix shall be construed to prohibit the subdivider from constructing a higher type of improvement than specified herein. (Ord. 1146, § 63, 7/19/1977)