ARCADIS To Help Corus Adjust Belgian Production.

ARNHEM, Netherlands -- ARCADIS (NASDAQ: ARCAF, EURONEXT: ARCAD), the international consultancy and engineering company, announced today that it has been selected to assist Corus Aluminium in Duffel, Belgium. The project has a duration of 2.5 years and represents a value of e1/4 2 million for ARCADIS. Aleris Group, of which Corus Aluminium has been part since August 2006, is one of the multinational clients of ARCADIS for which the company is performing projects in multiple countries.

At the location in Duffel, Corus produces semi-finished aluminium materials (rolled sheets and extruded materials), which are used in car manufacturing, aerospace applications, hydraulics and pneumatics. For these products, Corus Aluminium is an international market leader. To further strengthen its market position the company is running a major investment program (more than e1/4 30 million). As part of this program, sections of the current machinery will be moved, while new machinery will be added. ARCADIS will provide coordination for both the project and the master plan for Corus Aluminium, and will prepare engineering design work, coordination of installations as well as provide on site project management.

Michiel Jaski, member of the ARCADIS Executive Board commented about the project: "We won this assignment on the basis of a combination of solid global client contacts and a strong local presence in Belgium. Increasingly this is proving a winning combination in getting projects from multinational clients."

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 10,000 employees and over e1/4 1 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 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.