A set of plans and specifications, plot plan and a site plan of the proposed premises shall be filed in triplicate with the Planning Board, showing in detail an exact location of the automobile service station or public garage, the number and location of fuel tanks to be installed, the dimensions and capacity of each tank, the depth at which the tanks will be placed below the ground, the number and location of pumps to be installed, the type of structure and accessory buildings to be constructed, the number of automobiles which may be garaged and a description of the nature and extent of the proposed use.