Authorizing the revision of lines and grades on a portion of City Plan No. 106 by establishing a curved corner at the intersection of the westerly side of Thirty-Fourth Street and the northeasterly side of Mantua Avenue and establishing a curb bump-out extending along the northeasterly curbline of said Mantua Avenue from Thirty-Fourth Street to a point northwestwardly therefrom, under certain terms and conditions. — Open Common Ground