Waste Management to Announce Third Quarter Results and Host Conference Call

Date: September 25, 2006

Source: Waste Management, Inc.

Waste Management, Inc. (NYSE: WMI) will host a conference call on Wednesday, October 25, 2006 at 10am (Eastern) to discuss third quarter financial results which are to be released before the market opens on that day. Company spokespersons will include David Steiner, Chief Executive Officer, Larry O'Donnell, President and Chief Operating Officer, Robert G. Simpson, Senior Vice President and Chief Financial Officer, and Greg Nikkel, Director - Investor Relations. Those who wish to participate should call (877) 710-6139 a few minutes prior. The call will also be broadcast live over the internet at www.wm.com.

What: Waste Management third quarter 2006 earnings release conference call

When: Wednesday, October 25, 2006, from 9:00-10:00 a.m. CT (10:00-11:00 a.m. ET)

Where: www.wm.com

For more information, contact:
Analysts: Greg Nikkel, 713-265-1358
Or Media: Lynn Brown, 713-394-5093

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