In interpreting and applying the provisions of this ordinance, they shall be held to be the minimum requirements adopted for the promotion of public safety, health, convenience, comfort, prosperity and general welfare. It is not intended by this ordinance to repeal, abrogate, annul, or in any way to impair or interfere with any existing provision of law relating to the use of buildings or premises or relating to the erection, construction, establishment, alteration or enlargement of any buildings or improvements, except to the extent any existing provisions conflict with or are inconsistent with the valid provisions of this ordinance, and to that extent and no more, the same are hereby repealed. It is not intended by this ordinance to interfere with or abrogate or annul any easement, covenant or other agreement between private parties, but where zoning provisions of this ordinance are more restrictive than any existing private restrictive covenant affecting any portion of the incorporated area of the city, said zoning provisions shall prevail over said private covenant. It is specifically intended, however, that none of the provisions of this ordinance amend, alter or affect in any manner ordinance 146 of the city of Tombstone. (Ord. 168)