10 stories below ground, price tag soars

NEW YORK – New York City’s Department of Environmental Protection is building one of the largest water filtration plants in the world in a 10-story-deep hole it blasted out of bedrock in the Bronx. When completed in 2012, the plant, capable of purifying 300 million gallons of water a day, will be buried there.

But even as construction moves forward, questions about soaring costs and delays continue to plague the project.

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Source : New York Times