BRAZIL Operations added CRA Brazil – July 2012 ASA Brazil – October 2012 Clients – Vale and Petrobras

Mining Grew 10X in 4 years Grew >50% from FY11 to FY12 13% of Tt business Global Mining Practice with operations in: Canada, U.S., Australia, Chile, and Brazil

fy2012 Revenue 2.7 B 5% Net Revenue 2.0 B 13% EBITDA 222 M 12% US $ ∆ Y/Y Revenue 2.7 B 5% Net Revenue 2.0 B 13% EBITDA 222 M 12% Operating Income 166 M 14% Diluted EPS 1.63 Backlog 2.1 B 10% RECORD

Top five 1st 2nd 3rd CSI 85% IMR 38% TCI 35% MET 14% AAI FSN 13% AMT RANK 1st 2nd 3rd 4th 5th Revenue CSI 85% IMR 38% TCI 35% WUC 25% MMI 22% Operating Income* MET 14% AAI FSN 13% HEI CAA 11% DSOs** AMT 48 (23) ENE 58 (22) BAS 76 (21) MMI 65 (16) NUS 61 (15) BACKLOG CSI 233% TSO 108% TCI 80% MET 38% FSN 33% *Percent of GR **DSO (days reduced)

Clients 1st 2nd 3rd 4th 5th GOVERNMENT 250 USAID 157 U.S. Army 141 RANK 1st 2nd 3rd 4th 5th 6th 7th 8th 9th 10th $M GOVERNMENT 250 USAID 157 U.S. Army 141 U.S. Navy 82 Department of State 78 Environmental Protection Agency 72 Federal Aviation Administration 70 U.S. Air Force 47 Department of Energy (DOE) 35 New Jersey Turnpike Authority 25 U.S. Dept. Homeland Security $M COMMERCIAL 77 Cameco Corporation 51 Marble River 44 Freeport McMoran 42 Fox River 33 Shell 20 BHP Billiton Lockheed 19 Rio Tinto Alcan 17 Suncor 16 General Electric

organized for our business ENGINEERING & CONSULTING SERVICES TECHNICAL SUPPORT SERVICES ENGINEERING & ARCHITECTURE SERVICES REMEDIATION & CONSTRUCTION MANAGEMENT Jim Pagenkopf President Revenue: $1.2B* Staff: 6,800 Ron Chu President Revenue: $1.1B* Staff: 5,400 Frank Gross President Revenue: $622M Staff: 1,200 Water Infrastructure $183M ▪ 950 staff Buildings & Facilities $136M ▪ 650 staff

ORGANIZED For our Business LEAD WITH SCIENCE

systems support systems To support ADD ICONS ACT IT Tools Skills Search Web center Vendor database International Admin Shared Services Tetra Linx Conversion support systems LISTEN Small Business and Partnership Council International Working Council IT Council Small Business and Partnership Council International Working Council IT Council IT Tools Skills Search Web center Vendor database International Admin Shared Services Tetra Linx Conversion ADD ICONS Show how these are underpinning

FOCUS oN EMERGING MARkets china india VIETNAM Sri lanka Brazil chile SOUTH AFRICA Western australia

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