The council said specialist consultants will carry out a survey on the ground early in the new year.

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Virginia Burkett is the scientist at the U.S. Geological Survey who has analyzed the ground-based measurement of subsidence.

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In 2004, he conducted an electromagnetic survey of the site with the help of Dr Adam Booth, then of the University of Leeds, along with a further ground-penetrating radar survey.

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The purpose of this survey is to build more awareness of the on-the-ground realities of Chinese enterprises in the United States, and to provide insight on what it takes for a Chinese enterprise to succeed in the United States.

FORBES: Chinese Companies Upbeat About U.S.

But mortgage interest payments are not included in the CPI, nor are a variety of other costs, such as house depreciation, buildings insurance and ground rent, and house transaction costs such as estate agents' fees, survey costs and conveyancing charges.

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One survey carried out during the summer suggested that a majority of New Yorkers wanted it to be at ground level so it is easier to cross the site and reach the planned transportation hub, shops and office buildings.

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