(Re)appointments at ARCADIS

ARNHEM, The Netherlands, May 12, 2010 - ARCADIS (EURONEXT: ARCAD), the international design, consulting,
engineering and management services company, announced today that during the
Annual General Meeting of Shareholders that was held today a number of
reappointments and appointments have been approved. The reappointments are
those of Mr. Rijhard van Tets, Chairman of the Supervisory Board, for a new
term of four years and Mr. Friedrich Schneider, member of the Executive
Board, also for a four year term. New appointments are the previously
announced addition to the Executive Board of Mr. Renier Vree in the position
of Chief Financial Officer, and the appointment of Mr. Ian Grice to the
Supervisory Board, both for a period of four years.

Renier Vree (45) joined Royal Philips Electronics NV in 1987. In several
positions, he gained extensive international financial management experience.
He was also responsible for a sizable number of acquisitions. From 1994
through 2002 he worked as financial director/CFO of several business units in
the United States and Asia. Subsequently, he led global efficiency
improvement programs for Philips. As of 2004 he was CFO of Philips Lighting.

Mr. Grice (57) is a civil engineer and through his career was mainly
active in the infrastructure and buildings section. From 1981-1995 he worked
at John Mowlem plc on establishing and developing the management contracting
business, the continental European business and the successful facilities
management activities of Mowlem in the U.K. From 1995-2003 he was the
Executive Board Director and from 2003-2008 Chief Executive Officer of Alfred
McAlpine plc, a UK based Support Services Group. He was also responsible for
the international activities in Asia and the Middle East. Under his
leadership the first PFI (Private Financed Initiatives) projects for roads
and hospitals were gained.

About ARCADIS:

ARCADIS is an international company providing consultancy, design,
engineering and management services in infrastructure, water, environment and
buildings. We 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 1.8 billion in revenues, the
company has an extensive international network supported by strong local
market positions. ARCADIS supports UN-HABITAT with knowledge and expertise to
improve the quality of life in rapidly growing cities around the world. Visit
us at: www.arcadis.com

For more information please contact Joost Slooten at +31-26-3778604 or outside office hours at +31-6-2706-1880 or via email joost.slooten at arcadis.com.