After commencement of work, the work shall be prosecuted with due diligence to completion, and in a manner so as not to obstruct any street or travel thereon more than is necessary. If the work is not so prosecuted, or if the work does not, in the judgment of the Director, comply with the terms of this chapter, the Director shall notify the permittee, in writing, and require the permittee, within such time as allowed by the Director, to take such corrective measures as may be determined by the Director. Upon failure of the permittee to undertake such corrective measures, the Director may complete or cause to be completed, at the expense of the permittee, whatever work is necessary to restore the street, alley, sidewalk, or easement. No notice to the permittee shall be required when, in the judgment of the Director, a hazard to the public exists. (Ord. 5582 § 1 (part); November 19, 1996.)