Any person desiring to place a tub or receptacle for a tree or shrub on top of the paved or hard surfaced portion of street area must first apply to the City Administrator for a permit. The permit may be issued by the City Administrator under such safeguards and conditions as the City Administrator and the City Attorney may find necessary or appropriate to protect the public safety and to protect the City against claims of liability. The permit may be revoked by the City Administrator for any violation of conditions or terms of the permit or for neglect of the plantings or abandonment of use. After revocation, it is unlawful for the permittee or permittee’s successor in Title to the abutting property to allow the tub or receptacle to remain in street area.