When undertaking generic quantitative risk assessments for soil-borne contaminants, primarily under the Planning Regime, the contaminated land industry uses what are termed generic assessment criteria or soil assessment criteria to assess the potential risks from contaminants in soil to human health under a variety of land uses, for example, residential, allotments and public open spaces.
In 2014, Defra published the outputs of its project to develop Category 4 Screening Levels (C4SL) for use in contaminated land risk assessment based on a novel approach to risk assessment. C4SLs for contaminants in soil relate to a certain level of risk and combine data on human health toxicology, exposure assessments and the properties of the contaminants. The aim of developing C4SLs was to help address historically overcautious decision making and often-costly unnecessary remediation while ensuring that the risks to homeowners and the general public remain acceptably low.
Phase 2 of the project has started and the RSK geosciences team and CEA are proud to announce their joint involvement in this collaborative industry initiative. SAGTA is providing the project lead and central coordination for Phase 2 of this project, which will take place over the next 18 months.
“Geosciences is really excited to be involved,” comments RSK principal consultant Jo Wilding, who has been appointed as one of the Tier 2 toxicologists. “It gives us a great opportunity to work with our new colleagues at CEA as part of this industry-wide initiative.”
Further information on the project and the contaminants for which C4SLs will be derived is available on the Contaminated Land: Applications in Real Environments (CL:AIRE) website.