HOUSTON--(BUSINESS WIRE)--May 19, 2005--Waste Management, Inc. (NYSE:WMI) today named Lynn C. Brown Vice President of Corporate Communications. Brown joins the Government Affairs and Corporate Communications team headed by Barry Caldwell, Senior Vice President.

"Lynn brings a wealth of communications experience to Waste Management. Her experience with all facets of external and internal communications and managing successful teams at regulated, public companies will be beneficial as we strive to be the trusted leader in environmental services," said Caldwell.

Brown will be responsible for internal, external and online communications for Waste Management.

Brown joins Waste Management from Greyhound Lines, Inc., the nation's largest provider of intercity bus transportation and one of the most-recognized brands in the world, where she served as Vice President of Corporate Communications for 5 years. Prior to joining Greyhound, Brown worked in the defense and aerospace sector for more than 18 years with Raytheon and Texas Instruments.

Brown holds a Bachelor of Arts degree from Duke University and a Master of Business Administration from Southern Methodist University.

Waste Management, Inc. is its industry's leading provider of comprehensive waste management services. Based in Houston, the Company serves residential, commercial, industrial, and municipal customers throughout North America.

    CONTACT: Waste Management, Inc., Houston
             Analysts:
             Greg Nikkel, 713-265-1358
             or
             Media:
             Heather Browne, 713-265-1514

    SOURCE: Waste Management, Inc.