Waste Management, Inc. Sets Date for Third Quarter 2009 Earnings Release Conference Call and Announces Fourth Quarter 2009 Conference Presentation Schedule

Waste Management, Inc. (NYSE:WM) announced that it has scheduled an analyst conference call on Thursday, October 29, 2009 at 10:00 a.m. Eastern Time to discuss third quarter 2009 financial results. These results are expected to be released before the opening of the market on Thursday, October 29, 2009 and will be available on Waste Management’s website, www.wm.com, after release to the wire services.

Certain statements and answers to questions during the conference call may contain "forward-looking statements.” These statements, and all phases of the Company’s operations, are subject to risks and uncertainties, any one of which could cause actual results to differ materially from those described in the forward-looking statements. Investors are reminded that these forward-looking statements must be considered in conjunction with the cautionary warnings and risk factors, which are detailed in Waste Management’s most recent Annual Report on Form 10-K filed with the SEC and available from the Company.

What: Waste Management third quarter 2009 earnings release conference call

When: Thursday, October 29, 2009 at 10:00 a.m. Eastern Time

Where: A live audio webcast of the conference call can be accessed by logging onto www.wm.com and selecting "Earnings Webcast” in the Business News section.

You may also listen to the analyst conference call by telephone by contacting the conference call operator 5-10 minutes prior to the scheduled start time and asking for the "Waste Management Conference Call – Call ID 30064951.” US/Canada Dial-In #: (877) 710-6139. Int'l/Local Dial-In #: (706) 643-7398. Participation will be in listen-only mode.

Replay: For those unable to listen to the live call, a replay will be available beginning at approximately noon ET October 29^th through 5:00 p.m. ET on November 11^th. To hear a replay of the call over the Internet, access Waste Management’s website at www.wm.com. To hear a telephonic replay of the call, dial 800-642-1687 or 706-645-9291 and enter conference code 30064951.

Waste Management, Inc. also announced today that Company executives currently plan to present at the following investment conferences during the fourth quarter of 2009:

Although these presentations are not expected to include any material non-public information, the Company will post the presentation slides on its website. The slides will be posted some time during the 24-hour period prior to the scheduled presentation time. The slides may be accessed via the Investor Relations section of the Company’s corporate website, which is located at www.wm.com. We anticipate that these conferences will be web cast and we will post audio links on our website as they are made available to us.

About Waste Management

Waste Management, based in Houston, Texas, is the leading provider of comprehensive waste management services in North America. Our subsidiaries provide collection, transfer, recycling and resource recovery, and disposal services. We are also a leading developer, operator and owner of waste-to-energy and landfill gas-to-energy facilities in the United States. Our customers include residential, commercial, industrial, and municipal customers throughout North America.