Environmental management – collection

Land contamination: technical guidance

Technical guidance on the management of contaminated land including how to investigate, assess and manage the risks.

A general introduction to this topic is provided on the contaminated land page.

Where land has been affected by contamination it may present a risk to humans, ecosystems, water quality and property. This page lists technical guidance covering many aspects of the management of contaminated land, including how to investigate and assess risks and decide how to manage them.

These documents are organised under headings in the ‘Information Map’ in part III of ‘Model Procedures for the Management of Land Contamination (CLR11)’.

This page focuses on some of the most popular guidance issued by the Environment Agency and in some cases other government departments on land contamination. Other relevant documents are available on GOV.UK and from the archived Environment Agency page. Other documents referenced in CLR11 published by other organisations should be accessed through their web sites directly. This list is not exhaustive and for any particular case you must check that you use the tools and guidance appropriately.

Related information:

Facts and figures about land contamination

  1. Contaminated land reports

    • Policy paper
  2. Indicators for land contamination

    • Research and analysis

Risk assessment: the water environment

‘ConSim’ is a tool for assessing the risk that is posed to groundwater by leaching contaminants. Get the software from www.consim.co.uk.

  1. Groundwater protection: principles and practice GP3

    • Guidance
  2. Land contamination: remedial targets methodology (RTM)

    • Research and analysis
  3. An illustrated handbook of Dense Non-Aqueous Phase Liquids (DNAPL) transport and fate in the subsurface

    • Research and analysis

Risk assessment: human health - general guidance

For category 4 screening levels (C4SL), please see Defra’s research project Development of Category 4 Screening Levels for assessment of land affected by contamination - SP1010.

  1. Human health toxicological assessment of contaminants in soil (SR2)

    • Research and analysis
  2. Updated technical background to the CLEA model (SR3)

    • Research and analysis
  3. Contaminated land exposure assessment (CLEA) tool

    • Guidance
  4. Review of building parameters for development of a soil vapour intrusion model

    • Research and analysis
  5. Data for priority organic pollutants for soil guideline values (SGVs)

    • Research and analysis

Risk assessment: human health - tox reports

Toxicological (tox) reports from 2009 onwards.

  1. Contaminants in soil: toxicological data and intake values for humans

    • Research and analysis

Risk assessment: human health - soil guideline values (SGV)

  1. Land contamination: soil guideline values (SGVs)

    • Research and analysis
  2. Land contamination: using soil guideline values (SGVs)

    • Guidance

Options appraisal: detailed evaluation of remediation options and developing the remediation strategy

  1. Costs and benefits associated with groundwater remediation

    • Research and analysis
  2. Cost benefit analysis for remediation of land contamination

    • Research and analysis

Implementation of the remediation strategy

  1. Land contamination: verification of remediation

    • Research and analysis

Site characterisation: general

  1. Technical aspects of site investigation in relation to land contamination

    • Research and analysis

Site characterisation: sampling design

  1. Secondary model procedure for the development of appropriate soil sampling strategies

    • Research and analysis