Covanta to Announce 3rd Quarter Results on October 22

Date: September 26, 2008

Source: Covanta Holding Corporation

Covanta Holding Corporation To Host Third Quarter Earnings Conference Call on October 23, 2008

Covanta Holding Corporation (NYSE: CVA) will host a conference call at 8:30 AM (Eastern) on Thursday, October 23, 2008 to discuss its third quarter results. The Company will release those results after the market closes on Wednesday, October 22, 2008. The documents will also be available in the News section of the company's website at www.covantaholding.com.

Prepared remarks will be followed by a question-and-answer session. To participate, please dial 877-719-9810 approximately 10 minutes prior to the scheduled start of the call. If you are calling from outside of the United States, please dial 719-325-4824. The conference call will also be webcast live from the Investor Information/IR Conference Calls section of the Covanta website.

A replay of the conference call will be available from 11:30 AM (Eastern) Thursday, October 23, 2008 through midnight (Eastern) Friday, October 31, 2008. To access the replay, please dial 888-203-1112, or from outside of the United States 719-457-0820 and use the replay pass code: 9244630. The web cast will also be archived on www.covantaholding.com.

About Covanta

Covanta Holding Corporation (NYSE: CVA - News), is an internationally recognized owner and operator of large-scale Energy-from-Waste and renewable energy projects and a recipient of the Energy Innovator Award from the U.S. Department of Energy's Office of Energy Efficiency and Renewable Energy. Covanta's 38 Energy-from-Waste facilities provide communities with an environmentally sound solution to their solid waste disposal needs by using that municipal solid waste to generate clean, renewable energy. Annually, Covanta's modern Energy-from-Waste facilities safely and securely convert more than 16 million tons of waste into more than 8 million megawatt hours of clean renewable electricity and create 10 billion pounds of steam that are sold to a variety of industries. For more information, visit www.covantaholding.com.

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