1 EXHIBIT 9 AMENDED ACKNOWLEDGMENT AND AGREEMENT TO TENDER UNITS OF LIMITED PARTNERSHIP UNITS OF RIVERSIDE PARK ASSOCIATES LIMITED PARTNERSHIP (THE "PARTNERSHIP") PURSUANT TO AN OFFER TO PURCHASE DATED AUGUST 29, 2001 (THE "OFFER DATE"), SUPPLEMENTED...Acknowledgment and Agreement to Tender Units of Limited Partnership • September 21st, 2001 • Riverside Park Associates Lp • Operators of apartment buildings
