EXHIBIT 99.3 ACKNOWLEDGMENT AND AGREEMENT TO TENDER UNITS OF LIMITED PARTNERSHIP UNITS OF JOHNSTOWN/CONSOLIDATED INCOME PARTNERS (THE "PARTNERSHIP") PURSUANT TO AN OFFER TO PURCHASE DATED MAY 9, 2002 (THE "OFFER DATE") BY AIMCO PROPERTIES, L.P....Acknowledgment and Agreement • May 9th, 2002 • Aimco Properties Lp • Operators of apartment buildings
