Washington Group International Energy & Environment Unit names Stephen F. Piccolo to lead Washington team at Hanford

Aiken, SC, Feb. 7, 2003 — The Energy & Environment Unit of Washington Group International, Inc. on Friday announced it has named Stephen F. Piccolo Manager of Operations for the Hanford Waste Treatment Plant (WTP), which is now under construction in southeastern Washington state.

Washington Group is principle subcontractor to Bechtel National Inc., which has a 10-year, $5 billion contract with the U.S. Department of Energy to design, build and commission the world largest radioactive waste treatment plant. Washington Group’s expertise is being utilized on the project in the areas of research and technology, process operations, startup and commissioning.

Piccolo was previously a Vice President and General Manager for the Westinghouse Savannah River Company. There he was responsible for the site’s high level waste facilities including the Defense Waste Processing Facility.

“His experience will definitely compliment the Hanford Team working with Bechtel National, Inc. to build the world’s largest Waste Treatment Plant, a sister facility to the one at the Savannah River site,” said Dr. Ralph R. DiSibio, President of Washington Energy & Environment.

Piccolo has more than 25 years’ experience in both commercial and government nuclear programs. Before joining Washington Group International, he spent eight years with Bechtel Power Corporation. During his nine years at the Savannah River Site, Piccolo held numerous management positions including K Reactor Restart Manager, Defense Waste Processing Facility Startup Manager and Engineering Director, and High Level Waste Vice President and General Manger.

Piccolo holds a Bachelor of Science in Mechanical Engineering and Applied Mechanics from the University of Rhode Island and a Masters of Interdisciplinary Technology from Eastern Michigan University.

About Washington Group International

Washington Group International, Inc. (OTC BB: WGII) is a international engineering, construction and environmental firm. With more than 30,000 employees at work in over 40 states and more than 30 countries, the company offers a full life-cycle of services as a preferred provider of premier science, engineering, construction, operations, maintenance, program management and development services in 14 major markets. Those markets are: energy, environmental, government, heavy-civil, industrial, mining, nuclear-services, operations and maintenance, petroleum and chemicals, process, pulp and paper, telecommunications, transportation, and water-resources.