ARCADIS Appoints Theo Dilissen as CEO/Delegated Director of Arcadis Belgium

ARNHEM, The Netherlands, June 1, 2010 - ARCADIS (EURONEXT: ARCAD), the international design, consulting,
engineering and management services company, announced today that Theo
Dilissen has been appointed CEO of the Belgian activities of ARCADIS. Mr
Dilissen succeeds Marc van Put, who will pursue his career at ARCADIS in
Belgium as Commercial Director. The changes come into effect as of June 1,
2010.

Mr Dilissen is a sociology graduate of Antwerp University and has gained
an MBA from the Flanders Business School. After occupying various sales and
marketing roles in the pharmaceutical sector, he worked in a number of
management positions for ISS - a fast-growing, international, listed company
- of which his final position was as Chief Operating Officer. In the period
2000-2004, he was CEO and Managing Director of Real Software, which is one of
the leading software companies in Belgium. Subsequently, he was CEO and
Chairman of Aviapartner (airport handling business) between 2005 and 2009.
Currently, he is a non-Executive Director of the Supervisory Board of
Belgacom, the largest telecommunications company in Belgium.

"The extensive experience of Mr Dilissen in managing organizations in
fast-growing service sectors is extremely beneficial for ARCADIS," comments
Harrie Noy, CEO of ARCADIS NV. "The fact that he has spent the vast part of
his career working for international organizations complements the profile
for this function. We expect that Theo Dilissen is in a good position to
further expand the successes of our Belgian activities."

For more information please contact Joost Slooten: at +31-263778604 - or
outside office hours at +31 627061880 or via email joost.slooten@arcadis.com.

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.

PRN NLD

ARCADIS NV, Nieuwe Stationsstraat 10, P.O. Box 33, 6800 LE Arnhem- The
Netherlands- Tel +31-26-3778-292, Fax +31-26-4438-381