The work authorized by a permit hereunder shall be done with all possible speed and in accordance with POTW rules and regulations. If the work is not completed within sixty (60) days (unless a special extension is granted in writing by the POTW) the permit shall be void, no refund made for such permit, and a new permit must be obtained to finish the work. (Ord. 36-93 § 5, 1993: prior code § 37-4-9)