The Commission in recommending and the Council in reviewing a proposal for and prior to enacting an ordinance creating an oil combining zone shall find from the evidence submitted with the application and at the hearings that the following conditions exist in relation to the proposed zone:
(A) The subject property is suitable for the proposed site in terms of access, size of parcel, relationship to similar or related uses and other considerations deemed relevant by the Commission and Council;
(B) The proposed zone is necessary and proper at this time and is not likely to be detrimental to the adjacent property or residents;
(C) The proposed zone will not adversely affect the health, safety, morals, convenience and welfare of the residents of the city;
(D) There is not available and reasonably obtainable in the same zone, or in an adjacent or nearby district within a reasonable distance therefrom, one or more other locations where controlled drilling could be conducted with greater safety and security, with appreciably less harm to other property and with greater conformity to the zoning plans of the city.
(`78 Code, § 17.60.060.)