Hyde Marine Names W&O Supply as the Exclusive Distributor of Hyde Guardian® Ballast Water Management Systems in the U.S. and

  Hyde Marine Names W&O Supply as the Exclusive Distributor of Hyde Guardian®
  Ballast Water Management Systems in the U.S. and Canada

OTC 2013

Business Wire

PITTSBURGH -- May 6, 2013

Hyde Marine, Inc., a wholly owned subsidiary of Calgon Carbon Corporation
(NYSE: CCC), announced today that it has named W&O Supply as its exclusive
sales distributor in the U.S. and Canada for Hyde GUARDIAN^® Ballast Water
Treatment Systems (BWTS).

The chemical free Hyde GUARDIAN BWTS 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, the Hyde GUARDIAN BWTS earned the
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.

According to John Platz, President of Hyde Marine, Jacksonville, Florida-based
W&O will begin selling Hyde GUARDIAN BWTS effective immediately.

“We are pleased to partner with W&O because the company has an outstanding
reputation as a premier engineered-solutions provider committed to meeting the
needs of the maritime industry,” said Platz. “We are excited about the
opportunity to work with W&O to continue the growth of the Hyde GUARDIAN
Ballast Water Treatment System business across the U.S. and Canada.”

“Ballast water treatment system regulations are affecting the entire marine
industry, which is why it was essential to find a trusted and reputable
partner we could work with to bring the best solution available to the
market,” said Michael Hume, CEO of W&O. “We are proud to partner with Hyde
Marine, a 148 year old company known for innovation in the marine industry, to
help educate our customers and find the best BWTS solutions for their vessels
and fleets.” Hume added that W&O will represent Hyde GUARDIAN at the upcoming
Offshore Technology Conference in Houston, Texas, May 6-9, 2013, at the W&O
booth, # 1163.

With 16 stocking locations in the U.S. and Canada, two in Europe and one in
South America, W&O Supply serves all segments of the maritime industry,
including commercial shipping, the U.S. Navy, Military Sealift Command, MARAD,
U.S. Coast Guard, cruise lines, barge owners, upstream oil and gas rigs, and
the shipyards that build and repair vessels of all sizes.

“With the recent announcement of AMS approval, Hyde Marine and W&O are in a
unique position to provide shipowners and operators with ballast water
treatment solutions that meet USCG requirements for operation in U.S. waters,”
said Platz.

AMS approval is an interim measure that allows BWTS to be used on vessels for
five years after the vessel is required to comply with the USCG Ballast Water
Discharge Standards. The five-year period is designed to allow the BWTS
manufacturer sufficient time to obtain U.S. Type Approval and ensure the ship
operator’s compliance with U.S. ballast water regulations into the future.

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.

Visit www.hydemarine.com for more information about Hyde Marine’s ballast
water management solutions. For additional background on W&O, visit
www.wosupply.com.

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 235 Hyde GUARDIAN units sold to date for
installation in various ship types and sizes around the world.

About W&O Supply

Founded in 1975, W&O is one of the world’s largest suppliers of valve
automation, engineered solutions and marine pipe, valves and fittings for the
marine and upstream oil and gas industries. Serving a variety of customers
around the world, W&O operates a network of 19 branches throughout North
America, South America and Europe from its corporate headquarters in
Jacksonville, Florida. For more information about W&O, visit www.wosupply.com.

For more information about Calgon Carbon’s leading activated carbon and
ultraviolet technology solutions for municipalities and industries, visit
www.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 changes
in, or delays in the implementation of, regulations that cause a market for
our products, acquisitions, 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.

Contact:

Calgon Carbon Corporation
Gail A. Gerono, 412-787-6795
Vice President – Investor Relations and Communications
ggerono@calgoncarbon-us.com