X0202 3 2004-11-10 1 0001298341 Nalco Holding CO oye$p5dc 0001106636 HARRIS JOSHUA 600 BROADWAY NEW YORK NY 10012 1 0 0 0 Mr. Harris is associated with Apollo Management V L.P. ("Management") and its affiliated investment managers. Management serves as the manager of Apollo Investment Fund V, L.P., AP Nalco LP and Apollo/Nalco Acquisition LLC (collectively, the "Apollo Funds"), which may each be deemed beneficial owners of certain shares of common stock of Nalco Holding Company. Mr. Harris disclaims beneficial ownership of all shares of Nalco Holding Company common stock that may be deemed beneficially owned by the Apollo Funds and Management. This report shall not be deemed an admission that Mr. Harris is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Exchange Act of 1934, as amended, or for any other purpose. Filomena Trombino as Attorney in Fact 2004-11-10