The permittee shall, at all times and at his or its own expense, preserve and protect from injury any adjoining property by providing proper foundations and taking other measures suitable for the purpose. Where in the protection of such property it is necessary to enter upon private property for the purpose of taking appropriate protective measures, the permittee shall obtain consent from the owner of such property, and if he cannot obtain such consent, the Director of the Department of Public Works may authorize him to enter the private premises solely for the purpose of making the property safe. Whenever it may be necessary for the permittee to trench through any lawn area, said area shall be top-soiled, reseeded and mulched or the sod shall be carefully cut, rolled and replaced after the ditches have been backfilled as required in this chapter. All construction and maintenance work shall be done in a manner calculated to leave the lawn area clean of earth and debris and in a condition as nearly as possible to that which existed before the work began. The permittee shall not remove, even temporarily, any trees or shrubs which exist in parking strip areas or right-of-way areas without first obtaining the consent of the appropriate city departments or city officials having supervision thereof.
(1990 Code, § 4.13)