1. Press conference August 15, 2000 Comments to the results of the second quarter and first half of 2000 by Harrie Noy, chairman Executive Board ARCADIS NV

2. Net income 2nd quarter 2000: EUR 5,6 mln Gross revenue Net revenue Operating income Net income 1999 163 116 7.7 4.7 2000 205 143 10.2 5.6 Growth 26% 23% 32% 19%

3. Net income 1st half 2000: EUR 8,8 mln Gross revenue Net revenue Operating income Net income 1999 300 219 13,1 7,3 2000 371 266 16,3 8,8 Growth 24% 22% 24% 21%

4. Development operating income 21% 20%8%4%24%

5. Gross revenu : Market segments Environment +22% 70 75 80 85 90 95 100 19992000 Buildings +55% - 10 20 30 40 50 60 70 80 19992000 Real estate/Telecom +21% 30 35 40 45 50 55 60 19992000 Infrastructure +14% 100 110 120 130 140 150 19992000

6. Geographic breakdown First half 2000 First half 1999

7. Gross revenue: Regions Netherlands Consulting +13% 60 70 80 90 100 110 120 19992000 Europe rest -/-5% - 20 40 60 80 19992000 Asia, Africa, Latin America +69% - 10 20 30 40 19992000 United States +71% 60 80 100 120 140 19992000 Netherlands Contracting -/-10% - 10 20 30 40 50 19992000

8. Prospects 2000 Increase in operating income equal to first half Result NCC lower than 1999 Tax level slightly higher Net income: +12 tot 15%

9. Strategic review Presentation press conference 15 August 2000

10. ARCADIS has strongly expanded internationally North America AG&M POH Giffels Europe Germany Spain Belgium France Poland U.K. Netherlands South America Geotecnica Logos

11. Strategic motives Multinational clients One stop shopping Home market positions One firm concept Global network … …based on strong local positions

12. Good results achieved Europe top 3 / world wide no. 9 Stable growth of gross revenue and net income Acquisition of leading, innovative companies Successfully integrated in network One firm concept implemented Strongest international network in our business

13. No reason to be complacent Positive developments not reflected in share price Organic growth limited Image needs strengthening New team in Executive Board Conclusion: strategic review

14. Stronger focus on shareholder value Profitable growth essential –Organic growth of activities –Better margins –Acquisitions Concentrations on home markets –No further geographic expansion Higher share price improves growth potential

15. Acceleration profitable growth through: Making better use of network –Public transportation –Telecom –Partnering Broadening scope of services for multinational clients –Global account management –Services for site management New types of services –Temping –E-business Acquisitions to strengthen portfolio