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Subsidence, the gradual downward movement of a building or structure, can damage buildings. Keller can apply releveling techniques to bring buildings back to their correct levels, strengthen any weak ground under and around the foundations, and avoid recurring sinking issues.

Liquefaction is a common problem in earthquake-prone areas where soils lose strength due to the ground motion and behave like a viscous liquid, damaging overlying structures. Keller can find the optimal solution for liquefaction mitigation.

Groundwater control (also known as seepage control) involves the creation of barriers in soil, rock, or below-grade structures to restrict water movement. Keller provides the optimal solution to tackle each difficult groundwater control challenge.

Weak, compressible soils may require structural elements that transfer loads to underlying competent soils or rock, specifically deep foundations (also known as heavy foundations). Keller can provide the optimal deep foundation solution on an open site or inside an existing structure.

Underpinning supports existing foundations that cannot safely support existing or future loads. Keller can provide the optimal repair or solution to remediate the structure.

Slope stabilization is often required to retain soil in natural, unstable slopes or man-made excavations. Keller draws on its extensive experience with the full range of techniques to provide optimal slope stabilization solutions for various projects.

Soils often need treatment to support the weight of a building or to withstand the loads imposed by a piece of infrastructure. This can mean ground improvement or installing foundations to transfer the loads to deeper, more competent layers.

Environmental remediation encompasses a broad spectrum of services, multiple techniques, and markets. It includes removing or containing hazardous waste or subsurface contaminants produced by or located at coal power plants, mines, and former or operational industrial or manufacturing sites.