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Wilbur Smith Associates, Columbia, S.C., contracted with the Metropolitan Knoxville Airport Authority in Knoxville, Tenn., to update the McGhee Tyson Airport’s master plan. The master plan will encompass airside and landside facilities, passenger and operations forecasts, pavement-management, security, offairport property land use, a possible new interchange, utilities, grading, and the airport’s GIS program.

Philadelphia-based Urban Engineers, Inc. was selected by the Pennsylvania Turnpike Commission to lead a team that will prepare preliminary designs and environmental documents for widening and reconstructing the Northeast Extension of the turnpike. The $180- million, six-year project includes widening the roadway from four to six lanes, widening the median from 4 feet to 26 feet, replacing bridges, adjusting side roads to accommodate the bridges, extending culverts, and constructing retaining and noise walls.

Parsons Brinckerhoff, New York, was awarded a $50-million contract by the Florida Department of Transportation to design improvements for a six-mile section of I-75 in Tampa. Improvements include adding a lane in each direction, reconstructing two large bridges, and widening 12 bridges.

J.L. Patterson & Associates, Inc., Orange, Calif., was awarded a three-year contract by the Southern California Regional Rail Authority to provide on-call engineering services for the entire Metrolink Commuter Rail System. The contract is potentially worth $9 million.

London-based AMEC won a contract to prepare an environmental impact statement for the Tar Ponds and Coke Ovens clean up in Sydney, Nova Scotia. The clean up is expected to take 10 years and cost $400 million. Cleanup plans include excavating and destroying the worst contaminants, treating remaining contaminants in place, constructing an engineered containment system, and landscaping the site. AMEC has been involved at the site during the past five years, conducting air monitoring and a peer review and quality assurance program for a soil quality study.

The U.S. Agency for International Development selected a joint venture of International Resources Group (IRG) and Tetra Tech, Inc., for a $2-billion ceiling, fiveyear contract to provide technical assistance and engineering services for water and coastal management projects in developing countries.

Projects include providing clean water supplies for city and rural areas, developing sustainable fisheries and aquaculture, protecting coral reefs, controlling pollution, and managing irrigation and wastewater systems.

Black & Veatch, Kansas City, Kan., was awarded a contract by the Washington (D.C.) Suburban Sanitary Commission to perform an alignment study and design for the Bi-County Water Supply Main project. The 30,000-footlong, 84-inch-diameter main will help supply water to Prince George’s County, Md., and provide reliable system pressure in Montgomery County, Md. The study area comprises a suburban residential area and an urban park. Construction alternatives include cut-and-cover, hard-rock tunnel, and a combination of methods.