Amending Section 2 of an Ordinance (Bill No. 990834) approved December 30, 1999, entitled "An Ordinance authorizing the revision of lines and grades on a portion of City Plan No. 246 by striking from the City Plan and vacating the legally open portions of Forty-fifth street, Saybrook street and Melville street, under certain terms and conditions," by extending the period for compliance with the authorization conditions therein. — Open Common Ground