Approving the redevelopment proposal of the Redevelopment Authority of the City of Philadelphia for the redevelopment of the Ontario Urban Renewal Area being the area generally bounded by West Westmoreland street on the north; Broad street on the east; West Clearfield street on the south; and Fifteenth street on the west; approving the urban renewal plan and determining that such plan and redevelopment proposal conform to the general locality plan and make adequate provisions for individuals, business concerns and families who are displaced; determining the necessity for changes in and for zon — Open Common Ground