Constituting the Fifth Supplemental Ordinance to the General Gas Works Revenue Bond Ordinance of 1998 (the "1998 General Ordinance"); authorizing the Mayor, the City Controller and the City Solicitor, or a majority of them, to sell, either at public or private sale, Gas Works Revenue Bonds, Fourth Series (1998 Ordinance), of the City of Philadelphia, in one or more subseries (the "Fourth Series Bonds") to be issued to pay the cost of certain capital projects and other Project Costs, as hereinafter more particularly described, and authorizing the application of proceeds of the Fourth Series Bon — Open Common Ground