Public utilities or any public use may be located in any of the districts; provided, however, that before a building permit or certificate of occupancy shall issue, application shall first be made to the Board of Adjustment, which, after hearing in the same manner and under the same procedure as in the case of exceptions to this chapter, shall recommend, in writing, to the Borough Council that such permit shall be granted for the reason that the granting thereof shall not, in its judgment, be detrimental to the health, safety or general welfare of the community and that the permit is reasonably necessary for the convenience of the community.