Expenditures may be made with the approval of the Board of Estimates from the appropriated funds of either utility, on the recommendation of the Director of Public Works, for necessary renewing, improving, rebuilding, or extending the plant and distribution system of such utility including all costs related thereto. The budgets for renewing, improving, rebuilding or extending the plant and distribution system of such utility shall be prepared in the manner prescribed in <cite data-doc="City of Baltimore, Md., Charter" data-path="V">Article V of the City Charter</cite>. City Code, 1976/83, art. 29, §21A(d) Ord. 78-941