Investigators have found large disparities in the capacities and public perceptions of two water treatment plants built by the same contractor as part of the Iraq reconstruction program. A report released on Oct. 28 by the Special Inspector General for Iraq Reconstruction (SIGIR) evaluates the Nassiriya water treatment plant and Ifraz water treatment plant. The Coalition Provisional Authority (CPA) awarded two separate task orders in April 2004 to a joint venture of Fluor Corp., Irving, Texas, and London-based AMEC to construct the Nassiriya plant for $277 million and the Ifraz plant for $185 million. The projects were completed in September
Arch dams, classically curved monoliths situated in narrow valleys, are not as common as other types of dams, such as embankment dams and gravity dams. ENR takes a look at some of the biggest arch dams in the world, both completed and under construction.