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A new draft British/International Standard ISO CD 24212 Remediation Techniques Applied at Contaminated Sites has been published for comment.  All comments are to be received by BSI by 22 February 2021 and sent to Jessy Mathew ( If you require a copy for review, please contact Michael Smith directly (

This document provides an overview of principles and characteristics on most commonly used remediation techniques applied on soils (soils as defined under ISO 11074). The scope of this document is restricted to the remediation of contaminated sites, i.e. where soil, soil gas and groundwater are concerned. It provides standard terminology, principles, scope, and key aspects on design/dimensioning and monitoring for each remediation techniques, but also an overview of the known advantages/limitations of each technique (in particular in a sustainable point of view).

This document is therefore intended to inform practitioners and stakeholders about main characteristics of most commonly used remediation techniques. It can also help practioners to select technically feasible approaches within an options evaluation phase, based on the state of the art of remediation technologies.

It is not intended to prescribe which technique use in a specific context. Therefore, it is not a frame that can cover all individual situations.

Note 1: the list of remediation techniques being presented in this document is not exhaustive as the focus is on well-known and mature remediation techniques only. The technique description distinguish which phase/matrix is being targeted by the technique (e.g. liquid, i.e. groundwater, gas, i.e. soil gas or solid, within the unsaturated zone). Thanks to ongoing R&D in the field of remediation technologies, more techniques may be added in future

Note 2: Guidance on the impact of geographical and climatic context is provided for each technique as far as possible.