No contractor, subcontractor, or anyone acting in consort therewith shall commence any excavation, opening, tree trimming, or maintenance of streets, sidewalks, curbs or other public ways without first obtaining a written permit from the Department of Public Works at least 48 hours prior to the commencement of such work, and without first notifying the St. Johns Police Department to enable the re-routing, if necessary, of all emergency vehicles, unless such work is deemed to be required in an emergency situation, including gasline break, in which case such work shall not be commenced without the contractor first contacting the Superintendent of the Department of Public Works, the Superintendent of the Water Department, and the St. Johns Police Department.
(1990 Code, § 4.31)