ARCADIS (NASDAQ: ARCAF; EURONEXT: ARCAD), the international consulting and engineering company, today confirmed that the company's listing on NASDAQ will automatically be terminated after the stock market close on June 7, 2007. The Company will continue to be listed on the Euronext stock exchange in Amsterdam. After the NASDAQ delisting becomes effective, U.S. shareholders can also trade in the United States in the over-the-counter (OTC) market.

ARCADIS has offered to cover conversion fees and expenses for a period of 6 months following delisting for those shareholders that decide to convert their shares from New York registry shares to shares, which are eligible for trading on Euronext. After that period, shareholders will have to pay the charges if they convert their shares. After June 7, 2007, shares will no longer be eligible for conversion to New York registry shares. ARCADIS shareholders holders are strongly urged to consult their own tax advisors as to the tax consequences of the conversion of their shares from New York registry shares to shares which are eligible for trading on Euronext, including state, local and foreign tax consequences.

Shareholders who have not yet traded in shares listed on Euronext have been advised to contact their broker for more details. Several market makers, including Hudson Securities, Knight Equity Markets and later also ABN AMRO, have enlisted as market makers in the over-the-counter market (also called the Pink Sheets) for ARCADIS shares. As a result of delisting from NASDAQ, the Company expects the liquidity of share trading in the U.S. to be reduced substantially, allowing for a deregistration with the Securities and Exchange Commission on or about June 8, 2008.

The Company remains committed to the U.S. market and to U.S. shareholders and only takes this step because in view of the low trading volume at the NASDAQ, the costs of a U.S. listing outweigh the benefits.

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, the risk that our delisting from NASDAQ and subsequent deregistration with the SEC will not become effective as currently anticipated, 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.