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Clean-up act

Piling and foundations

Ground at a former timber treatment works contaminated with hydrocarbons and heavy metals has benefited from a chemical slurry injection to make it fit for development.

E-Clay, a chemical slurry designed by contaminated ground remediation specialist Envirotreat, was injected by Miller Piling into the ground via a hollow-stem soil-mixing tool, combining the treatment reagents with the soils.

Interlocking 3.5m deep columns of soil/slurry mixture were installed, forming a barrier through which the groundwater can pass. As the water flows through the barrier, the contaminants are immobilised.

The work was completed using a Casagrande B125 continuous flight auger rig in less than two weeks.

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