Geology and Ground Water

Once the site screening criteria of mill location, topography, and hydrology are selected, geological considerations assume a critical role. In particular, site geology affects the foundation of the embankment, seepage rate, and the availability of borrow materials for embankment construction. Soft foundations, for example, may limit the allowable rate of embankment build-up in order to allow for adequate pore pressure dissipation. Sloping foundations and the presence of weak layers in the foundation may contribute to slope failure of the embankment.