1020.04 EXCAVATIONS.
   (a)   Permit Required. No person shall make any excavation or opening in or under any street without first obtaining a written permit therefor from the Director of Inspections. No permit shall be granted until the applicant posts a cash deposit and files a liability insurance policy as required by Section 1020.03.
(1974 Code Sec. 4.4)
   (b)   Emergencies. The City Engineer may, if the public safety requires immediate action, grant permission to make a necessary street opening in an emergency, provided that a permit shall be obtained on the following business day and the provisions of this chapter shall be complied with.
(1974 Code Sec. 4.5)
   (c)   Backfilling. All trenches in a public street or other public place, except by special permission, shall be backfilled in accordance with regulations adopted pursuant to this chapter. Any settlement shall be corrected within eight hours after notification to do so.
(1974 Code Sec. 4.6)
   (d)   Shoring. All openings and excavations shall, where necessary, be properly and substantially sheeted and braced as a safeguard to workers and to prevent cave-ins or washouts which would tend to injure the thoroughfare or subsurface structure of the street.
(1974 Code Sec. 4.32)
   (e)   Prohibited Openings. No permit to make any opening or excavation in or under a paved street shall be granted to any person within two years after the completion of any paving or resurfacing thereof. If a street opening is necessary as a public safety measure, the City Engineer may suspend the operation of this subsection as to such street opening.
(1974 Code Sec. 4.13)