Results 2001 and First Quarter 2002 Explanation by Harrie L.J. Noy, Chairman Executive Board

1. Results 2001 and First Quarter 2002 Explanation by Harrie L.J. Noy, Chairman Executive Board General Meeting of Shareholders Arnhem, the Netherlands, May 16, 2002

2. ARCADIS is on course • Income per share 2001: +10% • In line with financial goals • Good progress in implementing strategy • New initiatives in stead of telecom • Net income Q1 2002: +9% • Continued growth infra and environment • Outlook 2002: net income +5 to 10% • Despite economic uncertainty

3. ARCADIS continues profit growth 2001: +12% Gross revenue Operating income Net income (excl. extraordinary, excl. goodwill) EPS (excl. extraordinary, excl. goodwill) Extraodinary income Net income (incl. extraordinary, incl. goodwill*) EPS (incl. extraordinary, incl. goodwill*) *) Goodwill: € 0.1 mln 2001 797 38.8 23.2 1.14 2.0 25.1 1.24 2000 776 35.2 20.7 1.04 - 20.7 1.04 Growth 3% 11% 12% 10% 21% 19%

4. Sources of growth 2001 Gross revenue • Total • Autonomous • Acquisitions • Currency-effect • *)Excluding effect real estate valuation 2001 3% 3% 0% 0% 2001 adj.* 5% 5% 0% 0%

5. Results versus goals • 1 Growth gross revenue • Autonomous • Acquisitions • Currency-effect • 2 Margin • EBIT/net revenue • 3 EPS growth • *)Excluding effect property valuations (Netherlands) Goal 13% 6.5% 6.5% - In 2005 8% 15% 2000 18% 7% 6% 5% 6.4% 16% 2001 5%* 5%* 0% 0% 6.9% 10% 1995-99 13% 3% 7% 3% 1999 6.1% 8%

6. Important developments • Netherlands: good results infrastructure outweighed for strong decline in property valuations • U.S.: growth in infrastructure and environment compensates for decline in buildings and telecom • Growth telecom substantially lags expectations • Further decline in less profitable activities - Reduction in buildings segment Germany, Netherlands • Sale of composting activities Netherlands • Integration Netherlands operations • Sale of 35%-stake in SAGEOS France

7. Development operating income In millions of euros +19% +4% +2% +26% +11%

8. Development net income and EPS (excl. extraordinary and excl. goodwill) In mln euro In euro 1.50 1.25 1.00 1.14 1.04 0.90 0.75 0.81 0.77 0.50 0.25 0.00 Net income +15% +6% +14% +18% +12%

9. Cash flow In millions of euros 1999 2000 2001

10. Balance sheet and returns Return on invested capital

11. Gross revenue by market segment

12. Infrastructure +13% Major projects Netherlands Strong growth United States Wind energy Germany Recovery Chile: synergy

13. Environment +8% GRiPTM successful in the U.S. MNC program works well Composting sold Acquisition Hidro Ambiente Brazil

14. Buildings –20% Strong decline United States NL: higher value added Outsourcing in Belgium Turnkey in Spain

15. Communications –12% Telecom: strong decline U.S. in Q4 Telecom: growth Germany First mile in the Netherlands GIS market grows well

16. Gross revenue by region NL consulting 0% (+11% excluding property valuations)

17. EBITA by region

18. Geographical spread 2000 2001

19. Strong growth in specific segments • Expansion of • services • to industry Organic growth in existing core activities Enhanced profit growth Acquisitions Strategy: more focus on value creation

20. Organic profit growth in existing core activities Better utilization of network • Leveraging expertise and client contacts • Investments in web enabling Margin improvement • Reduction/sale less profitable activities - buildings, composting, Euroconsult • Integration Netherlands operations • Outsourcing detailed engineering

21. Strong growth in specific segments Infrastructure • Strong market in Europe, U.S. and Latin America Telecommunications • Growth lags expectations New growth-initiatives • New business initiatives (DBFO) • Program to strengthen commercial skills • New local growth impulses

22. Expansion of services to industry • Account management • MNC program successful • Broadening services towards existing client base • Outsourcing offers opportunities • Facilities Management started - Grabs strong attention in the market place - Developing alliances - First assignments

23. Acquisitions • 2001: focus on margin improvement • 2002: acquisitions high priority • Goal: • Strengthening portfolio • Additional growth through network • Priority for expansion in the United States • in infrastructure market • Goal: improve client mix and portfolio • Targeted acquisitions in Europe

24. Implementation • Measurement and steering drives strategy - Balanced score cards per opco • Financial performance • Contribution to strategic initiatives • Human resources management • Value creation initiatives • Option plan and bonus program • Employee participation w/ Lovinklaan Found. - Netherlands: 700 participants - Per July 2002 in United States, Germany and Belgium • Intensifying investor relations

25. Net income Q1- 2002: EUR 3.9 mln

26. Headlines Q1-2002 • Growth was mainly organic • Infrastructure strong globally • Environment mainly growth in U.S. • Buildings/communications at level Q4-2001 • Geographically strong: Spain, Belgium, Latin-America • Net income lower than EBITA through: • Higher taxes, larger minority interest, lower contribution NCC’s

27. Market outlook • Infrastructure • Stable growth, possible shift in priorities • Need for investments remains high • Environment • Growth in market share • GRiPTM also for DOD • Buildings • Recovery U.S. second half • Outsourcing to improve competitive position • Telecommunications • Recovery takes time, long term prospects good • Short term opportunities for niche growth

28. Outlook 2002 • Further growth infrastructure and environment • Additional growth initiatives • Also priority for acquisitions • Further margin improvement • Net income 5-10% higher (excluding extraordinary) • Barring: • Unforeseen circumstances Excluding new acquisitions

29. Peer group: EBITA-margin

30. Peer group: Stock Price Developments