Arcadis Financial Dates 2010

AMSTERDAM - Below please find the provisional financial publication dates for ARCADIS NV (Euronext: ARCAD) in 2010. Please include these dates in your financial calendar.

Annual Results 2009

March 8, 2010 - Press release, press conference, analyst meeting & live webcast

April 9, 2010 - Issue date Annual Report

May 12, 2010 - Annual General Meeting of Shareholders

May 14, 2010 - Ex-dividend date

May 26, 2010 - Dividend payment

First quarter 2010

May 7, 2010 - Press release, analyst call & live webcast

Second quarter 2010

August 4, 2010 - Press release, press conference, analyst meeting & live webcast

Third quarter 2010

November 11, 2010 - Press release, analyst call & live webcast

About us:

ARCADIS is an international company providing consultancy, design, engineering, and management services in the fields of infrastructure, environment, and buildings. We aim to enhance mobility, sustainability, and quality of life by creating balance in the built and natural environment. ARCADIS develops, designs, implements, maintains and operates projects for companies and governments. With 15,000 employees and EUR 2 billion in revenues, the company has an extensive international network that is supported by strong local market positions. Visit us on the internet at: www.arcadis-global.com

PRN NLD.

Source: ARCADIS NV

For more information, contact: Joost Slooten of ARCADIS NV at +31-26-377-8604; outside regular office hours please call +31-6-2706-1880 or email: j.slooten at arcadis.nl