Press Release

Calgon Carbon Previews Third Quarter Earnings

PITTSBURGH, PA  –  09/17/2002

Calgon Carbon Corporation (NYSE: CCC) announced today that it expects sales and earnings for the third quarter of 2002 to show a slight improvement over the third quarter of 2001. For the third quarter of 2001, the company reported sales of $64.7 million and earnings per share of $0.04. However, the company announced that earnings per share for the third quarter of 2002 are not expected to meet securities analysts’ consensus estimate of $0.08.

Commenting on the announcement, Jim Cederna, Calgon Carbon’s chairman and chief executive officer, said, «We are making progress in this challenging economic environment. We will likely improve third quarter operating results year-over-year, but not to the level that our shareholders expected. We anticipate continued improvement in the fourth quarter as compared to the fourth quarter of 2001.»

Calgon Carbon will announce third quarter earnings on Thursday, October 24, and will schedule a conference call and webcast for October 25. Details will be announced in October.

Calgon Carbon Corporation, headquartered in Pittsburgh, Pennsylvania, is a global leader in services and solutions for making air and water cleaner and safer. The company employs approximately 1,000 people at 13 operating facilities and 11 sales and service centers worldwide.

The Private Securities Litigation Reform Act of 1995 provides a «safe harbor» for forward-looking statements. This document contains certain statements that are forward-looking relative to the company’s future strategy and performance. 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.

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For more information, please contact Gail Gerono (412) 787-6795