FAIRFIELD, NJ, April 28, 2006 - Covanta Holding Corporation (NYSE:CVA) will host a conference call at 11:00 AM (Eastern) on Friday, May 5, 2006 to discuss its first quarter results.  The Company will release its financial results for the first quarter after the market close on May 4, 2006.  In addition, Covanta will make supplemental information available on May 5, 2006 prior to the call.  The documents will be available on the Investor Relations section of the company's website at www.covantaholding.com.

Prepared remarks discussing the results and the supplemental information will be followed by a question-and-answer session.  To participate, please dial 800-475-3716 approximately 10 minutes prior to the scheduled start of the call.  If you are calling from outside of the United States, please dial 719-457-2728.  The conference call will also be webcast live on the Investor Relations section of the Covanta website.

A replay of the conference call will be available from 2:00 PM (Eastern) Friday, May 5, 2006 through 11:59 PM (Eastern) Friday, May 12, 2006.  To access the replay, please dial 888-203-1112 or 719-457-0820 and use the replay passcode: 9054160.  The webcast will also be archived on www.covantaholding.com.

About Covanta Holding

Covanta Holding Corporation is a New York Stock Exchange listed company engaging in waste disposal, energy services and specialty insurance through its subsidiaries. Covanta's subsidiary, Covanta Energy Corporation, is an internationally recognized owner and operator of waste-to-energy and power generation projects.  Covanta Energy's waste-to-energy facilities convert municipal solid waste into renewable energy for numerous communities, predominantly in the United States.

NOTE:  Covanta's charter contains restrictions that prohibit parties from acquiring 5% or more of Covanta's common stock without its prior consent.

Contact:          Doreen Lubeck

                        973-882-7001