Release of temporary certificate of occupancy guaranty. The City shall not hold more than one guaranty or bond of any type with respect to the same line item. Upon the posting of a temporary certificate of occupancy guaranty, all sums remaining under a performance guaranty which relate to the development, unit, lot, building, or phase of development for which the temporary certificate of occupancy is sought, shall be released. A temporary certificate of occupancy guaranty shall be released by the City Engineer upon the issuance of a permanent certificate of occupancy with regard to the development, unit, lot, building or phase as to which the temporary certificate of occupancy relates.