No excavation shall block more than one-half (1/2) of any street driving surface, except as approved by the Superintendent of Public Works. Nor shall any portion of any driving surface be blocked for a period to exceed seven (7) days. The Superintendent of Public Works shall be notified upon the commencement of the excavation work. Extensions may be granted by the Superintendent of Public Works if exigent circumstances require. (Ord. 2210, 10-24-2017)