Waste dumped on the surface or buried in shallow trenches can contaminate the surrounding rock and soil. The shear-wave velocity is sensitive to changes in soil properties and can be used to map structures that affect containment of the waste. A three dimensional mapping of shear-wave velocity can assist in evaluations of contaminated sites, in addition to locating buried trenches. The sensitivity of shear-wave velocity to fluid content makes it useful for identification of zones of saturated waste fluids and for tracking fluid movement with time. This research demonstrates that it is possible to generate images of shallow shear-wave structure from measurements of surface-wave group-velocity tomography. Images at test sites confirm the presence of anomalous structures.

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