No such permit shall be issued unless and until the applicant therefor has deposited with the Clerk a sum as determined by the Board of Aldermen to insure the proper restoration of the ground and laying of the pavement, if any. From this deposit shall be deducted the expense to the city of relaying the surface of the ground or pavement and of making the refill, if this is done by the city or at its expense, and the balance shall be returned to the applicant without interest after the tunnel or excavation is completely refilled and the surface or pavement is restored.
(Prior Code, § 500.060) (Ord. 117, passed 11-6-1967)