Press Release

Calgon Carbon Awarded $19.8-Milion Contract for Ballast Water Management

PITTSBURGH, PA  –  08/20/2010

Calgon Carbon Corporation (NYSE: CCC) announced today that its wholly owned subsidiary, Hyde Marine, Inc., has been awarded a contract by a leading South Korean shipyard to supply Hyde GUARDIAN® Ballast Water Treatment (BWT) Systems for several tankers being built for a major Greek ship owner. The contract is valued at approximately $19.8-million USD.

Hyde GUARDIAN® Systems will be delivered for 10 Suez-Max Crude Oil Tankers beginning in 2011 through 2013.

Hyde Marine, a recent addition to Calgon Carbon’s UV Technologies Division, is a global market leader in the growing BWT market having sold more than 70 Type Approved systems to date. The Hyde GUARDIAN® unit received International Maritime Organization (IMO) Type Approval in April 2009 and was the first BWT System accepted into the U.S. Coast Guard STEP program in October of 2008. The Hyde GUARDIAN® system is chemical free, using filtration and ultraviolet disinfection to treat ships’ ballast water to prevent the spread of invasive species from port to port.

Commenting on this announcement, John Stanik, Calgon Carbon’s Chairman, CEO and President said, “This is an important order for Hyde Marine in the BWT market as it expands the range of application of Hyde GUARDIAN® technology in both capacity and vessel type. I believe we are establishing a very strong global reputation that will position us as a major player in this new multi-billion dollar emerging market.”

For more information about Calgon Carbon’s leading activated carbon and ultraviolet technology solutions for municipalities and industries, visit HYPERLINK “http://www.calgoncarbon.com”dev.calgoncarbon.com.

Calgon Carbon Corporation, headquartered in Pittsburgh, Pennsylvania, is a global leader in services and solutions for making water and air safer and cleaner.

This news release contains historical information and forward-looking statements. Forward-looking statements typically contain words such as “expect,” “believe,” “estimate,” “anticipate,” or similar words indicating that future outcomes are uncertain. Statements looking forward in time, including statements regarding future growth and profitability, price increases, cost savings, broader product lines, enhanced competitive posture and acquisitions, are included in the company’s most recent Annual Report pursuant to the “safe harbor” provision of the Private Securities Litigation Reform Act of 1995. They involve known and unknown risks and uncertainties that may cause the company’s actual results in future periods to be materially different from any future performance suggested herein. Further, the company operates in an industry sector where securities values may be volatile and may be influenced by economic and other factors beyond the company’s control. Some of the factors that could affect future performance of the company are higher energy and raw material costs, costs of imports and related tariffs, labor relations, capital and environmental requirements, changes in foreign currency exchange rates, borrowing restrictions, validity of patents and other intellectual property, and pension costs. In the context of the forward-looking information provided in this news release, please refer to the discussions of risk factors and other information detailed in, as well as the other information contained in the company’s most recent Annual Report.