It shall be the duty of the Board of Public Works and Safety, upon the filing of a petition and approved bond, to issue to the petitioner an opening and excavation permit required by this subchapter, which permit shall describe the kind and location thereof; provided, however, the Board of Public Works and Safety shall also have the authority to refuse to issue a permit for an excavation where the Board deems the work not to be in the best public interest or the contractor, by past performances, has indicated that he cannot perform the work in accordance with the specifications required by this subchapter. The Board of Public Works and Safety may, by resolution duly passed by a majority of such Board, authorize and empower it's designated representative to issue any permits required by this chapter.
(`94 Code, § 95.63)