Sterling Geophysical Surveys are able to detect and delineate voids using non-intrusive geophysical techniques.

Subsurface voids can include issues such as washouts or settlement gaps beneath roadways or floor slabs, un-grouted masonry cells, bubbles in concrete pours, tunnels, mine workings, vaults, natural limestone (karst) caves or solution cavities, and incipient sinkholes or soil pipes.

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