A. Upon issuance of a street obstruction permit, the director of public works shall state thereon its expiration date, allowing a reasonable time for completion of the work.

B. The permit may be extended on application in writing and the payment of a fee set by council resolution; provided, that the director of public works determines that the work has been prosecuted in a reasonably diligent manner. [Ord. 9157 § 8, 1983].