A series of wells are to be used to dewater a construction site. An aquifer 30 m (98 ft) thick is located below the site. The aquifer consists of alternating layers of loose sand and loose clay (see Table 9.4). The total thickness of the sand layers is 10 0 m (32.8 ft), and the total thickness of the clay layers is 20.0 m (65.6 ft). During construction, the piezometric surface of the aquifer will be lowered 7.6 m (25.0 ft). Estimate the subsidence caused by the project.
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