Part 2A investigation of Vapour Intrusion from Chlorinated Solvents

12 March 2024 at 1-2pm, Webinar

This CPD-certified webinar is a case study presentation, which covers a Part 2A investigation into contamination of the soils and groundwater at a former dry-cleaners in Ross-on-Wye. The case study won Best Project Preparatory Work at the 2023 Brownfield Awards.

The predominant pollutant pathway was associated with vapours from the chlorinated solvent plume which had migrated off site beneath existing residential buildings. The investigation comprised multi-level boreholes, vapour wells, surface water sampling and in-house vapour sampling, both in-house and sub slab. The investigation needed to account for fractured bedrock, potential vapour flow through the unsaturated zone, topographic falls across the wider area, consideration of preferential pathways (sewers) and background solvent concentrations.

It also included a detailed communication strategy with emphasis on the off-site residents to enable entry to their properties.

Meet the speaker

Simon Burr, Partner, Campbell Reith Simon is a Partner at CampbellReith and responsible for the Land Quality department in London. He has been working in the environmental consultancy field since 1993, with specialisation in contaminated land risk assessment, investigation, and  remediation. He is a registered Specialist in Land Condition (SiLC) and a Suitably Qualified Person. He is a member of CL:AIRE’s Technical Research Group, providing scientific reviews of industry guidance on issues relating to the sustainable reuse of contaminated land. He is a Qualified Person as defined in the industry’s Definition of Waste Code of Practice (DoWCoP) and is currently involved in the stakeholder discussions for Version 3. He is currently a member of SoBRA’s ground gas and radon sub-committees and was a member of their sub-committee which developed the accreditation scheme for contaminated land risk assessors.