12.20.050: DURATION AND VALIDITY:
   A.   Permits shall be void if construction has not begun within thirty (30) days of the start date specified in the permit or if excavation, including restoration, has not been completed within the specified duration; provided, however, that the director, in his or her discretion, may issue one 30-day extension to the start date and extensions as may be deemed appropriate to the duration of excavation upon written request from the permittee.
   B.   After any work in connection with any excavation, obstruction, facility or equipment, or street betterment is commenced, by the holder of any permit as herein provided, the work of accomplishing the purpose thereof shall be diligently carried on and completed by him in a manner that shall not obstruct the street or any travel thereon more than is absolutely necessary. (Ord. 2397 § 3, 1999)