In interpreting and applying the provisions of the Land Planning and Subdivision Regulations, such provisions shall be held to be the minimum requirements for the promotion of the purposes and the objectives set forth throughout the Regulations. Except as specifically provided herein, it is not intended that the Subdivision Regulations repeal, abrogate or annul any existing provision of any law or ordinance or any rule or regulation previously adopted or issued pursuant to law relating to the planning and subdivision of land and the construction of improvements thereon.