To control foundation seepage and exit gradient, a plastic concrete cut-off wall, a grout curtain, and a set of downstream pressure relief Wells are incorporated in the design.

为了控制基础渗流和出逸坡降，设计采用了塑性混凝土防渗墙、帷幕灌浆以及在下游增设一套减压井相结合的方案。

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Following an eight-year term that has been entirely defined by one of the biggest crisis in the history of the U.S., Nagin says he anticipates his exit with relief.

CNN: Why Nagin's leaving office 'with worse rating than Bush'