Press Release

Calgon Carbon Awarded $2.3 Million Water Treatment Contract for Removal of 1,2,3-TCP

PITTSBURGH, PA  –  09/13/2017

Calgon Carbon Corporation (NYSE:CCC) (Calgon Carbon or the Company) announced today that the Company and RC Foster Corporation have signed a system supply contract valued at $2.3 million, under which Calgon Carbon will provide granular activated carbon (GAC) and associated equipment systems for the removal of 1,2,3-Trichloropropane (1,2,3-TCP) from groundwater in the city of Chino, CA.

Under the terms of the contract, Calgon Carbon will supply a total of 16 GAC adsorption vessels and 320,000 pounds of Filtrasorb® 400 GAC to the Benson Treatment Plant and the Eastside Treatment Plant. The systems will treat up to 5 million gallons of water per day at each site.

“Calgon Carbon has more than 30 years experience in providing GAC adsorption systems to water providers, and we are honored to have been selected by RC Foster Corporation to be its granular activated carbon and equipment supplier for this important project,” said Nora Stockhausen, VP of the Municipal and Reactivation Business Unit.

GAC removes 1,2,3-TCP from water through a process called adsorption. GAC is expected to be the Best Available Technology (BAT) for 1,2,3-TCP treatment.

1,2,3–TCP is a manmade, colorless, chlorinated hydrocarbon that was found in soil fumigants commonly used in California prior to the 1990s. 1,2,3-TCP causes cancer in laboratory animals (U.S. EPA, 2009). In 1992, the state of California added 1,2,3-TCP to the list of chemicals known to the state to cause cancer, pursuant to California’s Safe Drinking Water and Toxic Enforcement Act.

The compound is currently not regulated by the U.S. EPA, although it is on the Contaminant Candidate List 4 for future regulation. On March 3, 2017, the California State Water Resources Control Board proposed a draft maximum contaminant level (MCL) for 1,2,3-TCP of 5 parts per trillion. The State Water Board adopted the proposed 1,2,3-TCP regulations in July 2017.

“Calgon Carbon is excited to be part of a solution that will provide so many public water systems with safe drinking water,” said James Coccagno, Executive Vice President of the Core Carbon and Services Division. “With 1,2,3-TCP detected in many groundwater sources in California, it’s reassuring to know that the City of Chino has taken proactive steps to remedy the problem in their area.”

“With the installation of GAC adsorption systems, our client, the City of Chino, intends to be fully prepared to meet the new MCL,” said Robert Foster, President and CEO of RC Foster Corporation. “Protecting the customers’ health is the City’s highest priority and we are pleased to partner with Calgon Carbon, a leader in activated carbon treatment technologies and contaminant removal.”

Pure Water. Clean Air. Better World.

Calgon Carbon Corporation (NYSE:CCC) is a global leader in innovative solutions, high quality products and reliable services designed to protect human health and the environment from harmful contaminants in water and air. As a leading manufacturer of activated carbon, with broad capabilities in ultraviolet light disinfection, the Company provides purification solutions for drinking water, wastewater, pollution abatement, and a variety of industrial and commercial manufacturing processes.

Calgon Carbon is the world’s largest producer of granular activated carbon and supplies more than 100 types of activated carbon products – in granular, powdered, pelletized and cloth form – for more than 700 distinct applications.

With the recent acquisition of complementary wood-based activated carbon and filtration media capabilities located in Europe, Calgon Carbon becomes an even more global and diverse industry leader in activated carbon, reactivation, and filtration media in the form of diatomaceous earth and perlites.

Headquartered in Pittsburgh, Pennsylvania, the Company employs approximately 1,400 people and operates 20 manufacturing, reactivation, innovation and equipment fabrication facilities in the U.S., Asia, and in Europe, where Calgon Carbon is known as Chemviron.

For more information about Calgon Carbon’s leading activated carbon, filtration media, and ultraviolet technology solutions, visit www.calgoncarbon.com.

This news release may contain 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 are included herein 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. Any forward-looking statement speaks only as of the date on which such statement is made and the Company does not intend to correct or update any forward-looking statements, whether as a result of new information, future events or otherwise, unless required to do so by the Federal securities laws of the United States.