Chlorinated solvents were used for a number of years at a former manufacturing facility in Italy. This has resulted in contamination of the groundwater underlying a large proportion of this 6ha site. Groundwater concentrations of up to 155,000 μg/L TCE presented an unacceptable risk to both on- and off-site receptors and it was determined that active remediation was required. A remediation approach was designed based on targeted excavation of highly impacted soils, plume treatment through Enhanced Reductive Dechlorination (ERD) and the installation of a down-gradient treatment zone to prevent further contamination of the river beyond the site boundary.