Waste Management to Announce 2nd Quarter Earnings on July 29

Date: June 25, 2008

Source: Waste Management, Inc.

Waste Management, Inc. Announces Second Quarter 2008 Earnings Release Conference Call

Waste Management, Inc. (NYSE: WMI) announced that it has scheduled an analyst conference call on Tuesday, July 29, 2008 from 9:00 10:00 a.m. Central Time (10:00 11:00 a.m. ET) to discuss second quarter 2008 financial results. These results are expected to be released before the opening of the market on Tuesday, July 29, 2008 and will be available on Waste Management's website, www.wm.com, after release to the wire services.

Waste Management invites you to listen to the analyst conference call, which is open to the public and will be broadcast live over the Internet, at www.wm.com. 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.

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 53383277." US/Canada Dial-In #: (877) 710-6139. Int'l/Local Dial-In #: (706) 643-7398.

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 second quarter 2008 earnings release conference call

  • When: Tuesday, July 29, 2008, from 9:00 10:00 a.m. CT (10:00 11:00 a.m. ET)

  • How: Live over the Internet, logging on to the address above and selecting "Earnings Webcast" in the Business News section. You can also listen to the conference call by telephone at the number above. Participation will be in listen-only mode.

  • Requirements: To listen to the call over the Internet, you will need a computer with a sound card, speakers or headphones, and at least a 28.8 Kbps connection to the Internet. If you do not have the Real Player plug-in for your browser, please download it from www.real.com/products/player/.

  • Replay: For those unable to listen to the live call, a replay will be available 24 hours a day beginning at approximately noon CT July 29th through 5:00 p.m. CT on August 12th. To hear a replay of the call over the Internet, access the Waste Management 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 53383277.

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.

For more information, contact:
Waste Management, Inc., Houston
Analysts: Greg Nikkel, 713-265-1358
or
Media: Lynn Brown, 713-394-5093
www.WM.com.

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