ARCADIS Strengthens Belgian Market Position.

ARNHEM, The Netherlands -- ARCADIS (NASDAQ: ARCAF, EURONEXT: ARCAD), the international consultancy, engineering and project management company, announced today that it has acquired 100% of the shares of the Belgian SWK group. SWK is a consulting engineering firm active in infrastructure with offices in Ghent, Antwerp and Oostende. The company has annual gross revenues of EUR 5.9 million and 50 employees. Further financial details were not disclosed.

With the SWK acquisition, ARCADIS strengthens its Belgian activities, as SWK offers specialist knowledge in traffic, mobility, harbours and aquatic engineering. The acquisition also serves to reinforce ARCADIS' regional presence around Ghent and Oostende.

By joining ARCADIS, SWK is able to broaden its service offering and knowledge base. In addition, the multidisciplinary approach and exchange of international expertise within ARCADIS will serve to improve the quality of its services. With this acquisition, ARCADIS now has 535 employees in Belgium with total gross revenues of EUR 48 million in that market.

"ARCADIS has built an excellent reputation and performance in Belgium in recent years," said ARCADIS CEO Harrie Noy. "With this acquisition, ARCADIS strengthens its position as one of the top 3 of engineering companies in the Belgian market, with considerable potential for further growth. The know-how brought in by SWK is a valuable addition in that respect."

ARCADIS is an international company that provides project management, consultancy and engineering services to enhance mobility, sustainability and quality of life. Infrastructure - Environment - Buildings. ARCADIS develops, designs, implements, maintains and operates projects. For companies and governments. With 10,000 employees and EUR 900 million in gross revenue. Present multi-nationally with a close-knit local network. Expertise and experience of international significance. Focused on providing added value to clients. Responsible and involved. Thinking and acting. Result counts.

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 are 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.

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