Press Release

Hyde Marine Names Cammell Laird Installation Partner in the United Kingdom

PITTSBURGH, PA  –  09/30/2013

Calgon Carbon Corporation (NYSE: CCC) announced that its wholly owned subsidiary, Hyde Marine, Inc., has established a partnership agreement with Cammell Laird, the largest shipyard in the United Kingdom, for installation of the chemical free Hyde GUARDIAN^® (HG) Ballast Water Treatment (BWTS) System.

Cammell Laird had previously been tapped by the Royal Navy–Royal Fleet Auxiliary (RFA) for installation of Hyde GUARDIAN systems ranging from 150m³/hr to 1000m³/hr onto five naval vessels. The most recent installation was a complex retrofit in June 2013 of a HG1000X onboard the RFA’s Fast Fleet Tanker “Wave Ruler” at Cammell Laird’s Birkenhead yard.

According to John Platz, President, Hyde Marine, the partnership agreement means that the Merseyside, UK-based Cammell Laird is ready to install Hyde GUARDIAN BWTS systems for a wide variety of vessel types.

 “We are pleased to partner with Cammell Laird because of its commitment to innovation in the maritime industry, as well as for being a cutting edge engineering specialty company that is focused on meeting the needs of customers, such as theRoyal Fleet Auxiliary,” said Platz.  “We are excited about the opportunity to work with Cammell Laird to continue the ongoing growth of the Hyde GUARDIAN Ballast Water Treatment System across the United Kingdom.”

 The Hyde GUARDIAN BWTS process uses efficient filtration and ultraviolet disinfection to treat ships’ ballast water to prevent the spread of invasive species from port to port.  In April 2013, Hyde GUARDIAN became one of the first BWTS to earn Alternate Management System (AMS) approval from the United States Coast Guard (USCG).  It also received International Maritime Organization (IMO) Type Approval in April 2009 and has Type Approvals from several Class Societies.

 Tested and validated at the Royal Netherlands Institute for Sea Research (NIOZ), one of the most challenging ballast water test facilities in the world, the Hyde GUARDIAN^® BWTS ultimately became the first BWTS accepted into the U.S. Coast Guard’s Shipboard Technology Evaluation Program (STEP), which facilitates the development of effective BWTS technologies for vessel owners seeking alternatives to ballast water exchange.

 “We are looking forward to continuing our partnership with Hyde Marine as we work together to ensure shipowners and operators have access to one of the industry’s leading ballast water treatment technologies,” said Rob McBurney, Commercial Director of Cammell Laird.  “Hyde Marine’s commitment to providing superior service and support will drive continued success for Cammell Laird clients as the industry works to comply with pending ballast water treatment requirements.”

 Visit www.hydemarine.com for more information about Hyde Marine’s ballast water management solutions.  For additional background on Cammell Laird, visitwww.clbh.co.uk.

About Calgon Carbon

 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 calgoncarbon.dev.

About Hyde Marine

 With more than 100 years in the maritime industry and pioneering development of ballast water treatment technologies, Hyde Marine has become the leading U.S. manufacturer and educator regarding regulations, technologies, installation experiences, and challenges facing this sector.  Since its initial launch in 1998, the Hyde GUARDIAN® BWTS has rapidly emerged as an industry leader featuring mechanical separation with stacked-disc filtration followed by UV disinfection – with more than 265 Hyde GUARDIAN units sold to date for installation in various ship types and sizes around the world.

About Cammell Laird

Cammell Laird was founded in 1828 and is based on the River Mersey in the Liverpool City Region on the west coast of Britain.  The company’s Birkenhead site expands across 130 acres and includes four dry docks, a large modular construction hall and extensive covered workshops.  It is also at the centre of a marine and engineering cluster with easy access to support services classification societies and port state authorities.  Today, its highly skilled workforce and extensive world-class facilities are used to support a broad range of sectors and projects.

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.

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Contact:

 Gail A. Gerono

Vice President – Investor Relations and Communications

Direct Dial:  412-787-6795

ggerono@calgoncarbon-us.com