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Technology-Based Solutions for the Environment

Remediation Beneath Residential Housing Estate in Marlow, UK

Treatment of chlorinated solvent contamination within chalk aquifer


Significant chlorinated solvent groundwater contamination (PCE up to 30,000 μg/L) were discovered following the completion of the redevelopment of a former laundry site into a residential housing development.

An in situ remedial method was the only viable option to treat the contamination present beneath the buildings.

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Application works were undertaken using a portable Direct-Push injection rig. In total, 19,000 kg of 3-D Micoemulsion was applied to 15 No. injection points. Remedial works were completed within one week.

What’s Special?

  • Monitoring data 10 weeks post application, demonstrated that ambient geochemical parameters suitable for reductive dechlorination conditions had been established.
  • The parent compound PCE had been reduced to 8,500 μg/L and daughter products, which had previously been at non-detect, were now being recorded; further demonstrating that contamination was being degraded.