Calgon Carbon Corporation (NYSE: CCC) announced that its subsidiary, Hyde Marine, Inc., has been awarded a contract to supply a total of six Hyde GUARDIAN® Ballast Water Treatment (BWT) Systems for two LR2 Aframax tankers being constructed by the SPP shipyard in South Korea for ship owner OSG. The value of the contract was not disclosed. Hyde GUARDIAN employs a chemical-free process that combines filtration with ultraviolet disinfection to treat the ballast water of a ship to prevent the spread of invasive species.

Hyde Marine will provide two HG1500X-SF70 units and one HG250S for each of the newbuild ships, which will be installed in 2012. The tankers are currently under construction at SPP Shipbuilding Co., Ltd., located in Sacheon, South Syeongsang Province, South Korea.

The Hyde GUARDIAN unit received International Maritime Organization (IMO) Type Approval in April 2009 and was the first BWT System accepted in the U.S. Coast Guard's Shipboard Technology Evaluation Program (STEP). Calgon Carbon's UV Technology Division and Hyde Marine also received ISO 9001:2008 accreditation from the registrar Det Norske Veritas (DNV) and the ANAB National Accreditation Board in 2010. This certification applies to the management system for the design, development, manufacture, delivery, installation, warranty support, and aftermarket parts and service for both the UV water treatment and ballast treatment systems.

About Hyde Marine

For more information about Hyde Marine ballast water management solutions, visit www.hydemarine.com.

Calgon Carbon Corporation, headquartered in Pittsburgh, Pennsylvania, is a global leader in services and solutions for making water and air safer and cleaner. For more information about Calgon Carbon's leading activated carbon and ultraviolet technology solutions for municipalities and industries, visit www.calgoncarbon.com.

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.

Calgon Carbon Corporation
Gail A. Gerono, 412-787-6795
www.calgoncarbon.com