ARCADIS Subsidiary Malcolm Pirnie Involved in Worldwide Environmental Remediation Contract of U.S. Army

ARNHEM, The Netherlands, February 24, 2010 - ARCADIS (EURONEXT: ARCAD), the international consultancy, design,
engineering and management services company, announced today that a joint
venture of Malcolm Pirnie and its partner PIKA has been awarded a Worldwide
Environmental Services (WERS) contract by the U.S Army Engineering and
Support Center, Huntsville. Since July 2009, Malcolm Pirnie is a wholly owned
subsidiary of ARCADIS. The Contract, to support munitions response,
hazardous, toxic and radioactive waste remediation services, has a shared
capacity of $1.1 billion.

The PIKA-Pirnie joint venture is one of seven companies that were awarded
this Small Business Set-Aside 5-year indefinite delivery/indefinite quantity
contract. The WERS contract will be used for investigation through
remediation of Active and Base Realignment and Closure (BRAC) of military
installations and Formerly Used Defense Sites (FUDS) with munitions and/or
hazardous waste.

Steve Blake, member of the Executive Board of ARCADIS and CEO for its
U.S. business said: "Munitions and explosives of concern on former and
operational ranges is an issue that touches every state and many overseas
locations. Performing remediation on these types of sites is a core specialty
of Malcolm Pirnie and one that strengthens our ability to perform work for
the federal government. We expect to see a lot more synergy with Malcolm
Pirnie in this area with the help of our global footprint. We will fully
support the joint venture in the execution of this important contract."

About ARCADIS:

ARCADIS is an international company providing consultancy, design,
engineering and management services in 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 more than 15,000 employees and over EUR 2.0 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.com

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For more information please contact: Joost Slooten of ARCADIS at +31-26-3778604 or outside office hours at +31-6-27061880, or e-mail at joost.slooten at arcadis.com.