Canal Side Remediation Scheme

A leading construction company commissioned REC to review the remediation requirements of a contaminated site with a long industrial history in north-west London.

REC formulated a strategy to fully define the contamination distribution and based upon this prepare a revised, zoned remediation strategy.

• Targeted further site investigation to determine the contamination distribution within the soils across the site and delineation of a hydrocarbon contaminant plume within the groundwater.

• Zoned risk assessment based upon the contaminant distribution and the proposed land end usage.

• Design of a revised, more selective, remediation strategy based upon the zoned risk assessment.

• Preparation of a Remediation Method Statement and submission to the regulatory authorities for approval.

• On site pre-treatment of contaminated materials prior to removal to landfill to reduce the disposal costs.

• Due to the proximity of a canal all site works and the remediation strategy had to accommodate a buffer zone to protect the physical and chemical integrity of the canal wall.

• Validation of the remediation works was undertaken and reports submitted to the regulatory authorities for approval.

The targeted remediation work and on site pre-treatment of contaminated material significantly reduced the remediation costs as compared with a more generic approach.

Japanese Knotweed

In addition to the chemical contamination arising from the historic site usage Japanese Knotweed was also discovered at the site. REC was able to provide a remediation strategy and supervision and documentation of the works.