ARCADIS Results First Quarter 2009 Available Live Via Webcast

AMSTERDAM - Scheduled for Thursday, 7 May, 2008 11:00 AM (Eastern Time)

AMSTERDAM, April 28 /PRNewswire/ –

ARCADIS (Euronext: ARCAD) intends to release its first quarter 2009 results on Thursday, May 7, 2009 before the opening of the Euronext Amsterdam exchange. On the same day, ARCADIS will hold a conference call (starting time 11.00 AM Eastern time; 5 PM Central European Time). The event will be broadcast live via webcast. During these events, CEO Harrie Noy and CFO Ben van der Klift will provide insight into the results.

Viewers and listeners can access the events through a link in the investor relations section of ARCADIS’ website at www.arcadis-global.com/investors. Please allow 15 minutes prior to the event to visit the website to download and install any necessary software. An archived edition of the webcast will be available on the ARCADIS website.

ARCADIS is an international company providing consultancy, design, engineering and management services in the field 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 more than 14,000 employees and more than EUR 1.7 billion in gross revenue, the company has an extensive international network that is supported by strong local market positions.

PRN NLD

Source: ARCADIS NV

For more information, contact: Joost Slooten of ARCADIS NV at +31-26-3778604 outside regular office hours please call +31-6-2706-1880; email: j.slooten at arcadis.nl