Arcadis NV — Board/Management Information 2007

Apr 26, 2007

PRESS RELEASE

NEW DIRECTOR HEALTH & SAFETY FOR ARCADIS

ARNHEM, THE NETHERLANDS – April 26, 2007 – ARCADIS (NASDAQ: ARCAF, EURONEXT: ARCAD), the international consulting and engineering company, today announced that Mr. Bryan West has been appointed as of April 16, 2007 to the position of Director of Health & Safety (H&S) for ARCADIS. The appointment is a logical next step after the introduction of a global H&S policy in the Company last year.

Mr. West has extensive experience in H&S matters in the United States as well as ìn Europe. He has worked on the development and management of H&S programs for smaller and larger American companies on domestic sites and locations abroad. His last employer was Whirlpool Corporation, where he was a Director for Global Health & Safety for a number of years.

"Our goal is that no one gets hurt. To realize this, health and safety have been given the same priority as our other core values and are an integral part of the solutions we provide to our clients," according to ARCADIS Executive Board member Michiel Jaski. "Among other things, Bryan West will ensure that a state of the art H&S system will be implemented in the different ARCADIS companies, connected with existing quality systems in these operations. This step allows us to also meet changing client demands in this area."

ARCADIS is an international company providing consultancy, engineering and management services in infrastructure, environment and facilities, to enhance mobility, sustainability and quality of life. ARCADIS develops, designs, implements, maintains and operates projects for companies and governments. With more than 11,000 employees and over €1.2 billion in gross revenue, the company has an extensive international network that is supported by strong local market positions.

Except for historical information contained herein, the statements in this release are forward-looking statements that are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Forward-looking statements involve known and unknown risks and uncertainties that may cause the company's actual results in future periods to differ materially from forecasted results. Those risks include, among others, risks associated with possible changes in environmental legislation and risks with regard to the Company's ability to acquire and execute projects. These and other risks are described in ARCADIS' filings with the Securities and Exchange Commission over the last 12 months, copies of which will be available from the SEC or may be obtained upon request from the Company.

For more information contact: Joost Slooten of ARCADIS at *31-26-3778604 or e-mail at jslooten@arcadis.nl. Visit us on the internet: www.arcadis-global.com

ARCADIS NV Nieuwe Stationsstraat 10 P.O. Box 33 6800 LE Arnhem The Netherlands Tel +31 26 3778 292 Fax +3126 4438 381 www.arcadis-global.com