ARCADIS Aids Hurricane Relief through Habitat for Humanity.

DENVER -- ARCADIS (NASDAQ: ARCAF)(EURONEXT: ARCAD), the international consultancy and engineering company, announced today that in the wake of the devastation from Hurricanes Katrina and Rita, and in lieu of holiday cards and gifts, ARCADIS has made a $25,000 donation on behalf the firm's clients to Habitat for Humanity (www.habitat.org). Each client will receive a postcard thanking them for providing ARCADIS with the opportunity to work with them and informing them of the donation made on their behalf.

ARCADIS is also aiding in the reconstruction of infrastructure in affected areas by providing catastrophe emergency response, recovery, and restoration services for homes and industrial facilities roads, bridges, railways, water systems, and other infrastructure.

ARCADIS announced in addition that corporate commitment to aid and assist the victims of the hurricanes through a company-wide program in the U.S. to match employee donations to the American Red Cross has been very successful. ARCADIS employees generously donated over $25,000 of which $25,000 was matched dollar for dollar by the firm for a total of more than $50,000. ARCADIS NV is also making an additional contribution: The company and the Lovinklaan Foundation, the firm's largest shareholder, are making a combined donation of $50,000 to the American Red Cross in support of relief work in areas devastated by Hurricanes Katrina and Rita for a total corporate donation of over $100,000.

About Habitat for Humanity International 

Habitat for Humanity International, based in Americus, Ga., is an ecumenical Christian ministry that welcomes to its work all people dedicated to the cause of eliminating poverty housing. Since 1976, Habitat has built more than 200,000 houses in nearly 100 countries, providing simple, decent and affordable shelter for one million people. Operation Home Delivery is the emergency effort that was recently launched after Hurricane Katrina to help families in the affected areas recover and rebuild. www.habitat.org.

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 $1.1 billion 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.