Solid and liquid contaminants site risk assessments - Revision history

Designing Buildings at 07:28, 24 November 2020

2020-11-24T07:28:18Z

← Older revision		Revision as of 07:28, 24 November 2020
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	* Environment Agency R & D Technical Report P5-066 Secondary model procedure for the development of appropriate soil sampling strategies for land contamination		* Environment Agency R & D Technical Report P5-066 Secondary model procedure for the development of appropriate soil sampling strategies for land contamination

−	[[Category:~~Health_and_safety_/_CDM~~]] [[Category:~~Regulations~~]] [[Category:DCN_Regulation]]	+	[[Category:DCN_Definition]] [[Category:DCN_Guidance]] [[Category:DCN_Regulation]] [[Category:Health_and_safety_/_CDM]] [[Category:Regulations]]

Designing Buildings at 09:23, 1 January 2020

2020-01-01T09:23:41Z

← Older revision		Revision as of 09:23, 1 January 2020
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	* Deleterious materials.		* Deleterious materials.
	* Designing to reduce the chemical, biological and radiological vulnerability of new buildings (IP 7/15).		* Designing to reduce the chemical, biological and radiological vulnerability of new buildings (IP 7/15).
		+	* Diffuse pollution.
	* Ground conditions.		* Ground conditions.
	* Methane and other gasses from the ground.		* Methane and other gasses from the ground.
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	* Environment Agency R & D Technical Report P5-066 Secondary model procedure for the development of appropriate soil sampling strategies for land contamination		* Environment Agency R & D Technical Report P5-066 Secondary model procedure for the development of appropriate soil sampling strategies for land contamination

−	[[Category:Health_and_safety_/_CDM]] [[Category:Regulations]]	+	[[Category:Health_and_safety_/_CDM]] [[Category:Regulations]] [[Category:DCN_Regulation]]

Designing Buildings at 11:30, 13 December 2018

2018-12-13T11:30:17Z

← Older revision		Revision as of 11:30, 13 December 2018
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	Removal involves the excavation and disposal to of contaminants to licensed landfill sites.		Removal involves the excavation and disposal to of contaminants to licensed landfill sites.

−	~~= Find out more =~~	+	= Related articles on Designing Buildings Wiki =
−		+
−	=== Related articles on Designing Buildings Wiki ===	+

	* Brownfield land.		* Brownfield land.
	* Building on fill.		* Building on fill.
		+	* Conceptual site model.
	* Contaminated land.		* Contaminated land.
	* Cover systems for land regeneration - thickness of cover systems for contaminated land (BR465).		* Cover systems for land regeneration - thickness of cover systems for contaminated land (BR465).
	* Deleterious materials.		* Deleterious materials.
	* Designing to reduce the chemical, biological and radiological vulnerability of new buildings (IP 7/15).		* Designing to reduce the chemical, biological and radiological vulnerability of new buildings (IP 7/15).
−	* Environment Agency.
	* Ground conditions.		* Ground conditions.
−	* Landfill tax.
	* Methane and other gasses from the ground.		* Methane and other gasses from the ground.
	* Pollution.		* Pollution.
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	* Soil survey.		* Soil survey.

−	=== External references ===	+	= External references =

	* Guidelines for combined geoenvironmental and geotechnical investigations, Association of Geotechnical and Geoenvironmental Specialists.		* Guidelines for combined geoenvironmental and geotechnical investigations, Association of Geotechnical and Geoenvironmental Specialists.

Designing Buildings at 07:37, 15 July 2018

2018-07-15T07:37:26Z

← Older revision		Revision as of 07:37, 15 July 2018
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	* Radon.		* Radon.
	* Radon: Guidance on protective measures for new buildings BR 211.		* Radon: Guidance on protective measures for new buildings BR 211.
		+	* Radon protection for new domestic extensions and conservatories with solid concrete ground floors (GG 73 revised).
	* Site appraisal.		* Site appraisal.
	* Site investigation.		* Site investigation.

Designing Buildings at 07:57, 30 July 2017

2017-07-30T07:57:20Z

← Older revision		Revision as of 07:57, 30 July 2017
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	* Cover systems for land regeneration - thickness of cover systems for contaminated land (BR465).		* Cover systems for land regeneration - thickness of cover systems for contaminated land (BR465).
	* Deleterious materials.		* Deleterious materials.
		+	* Designing to reduce the chemical, biological and radiological vulnerability of new buildings (IP 7/15).
	* Environment Agency.		* Environment Agency.
	* Ground conditions.		* Ground conditions.

Designing Buildings at 07:06, 20 May 2017

2017-05-20T07:06:23Z

← Older revision		Revision as of 07:06, 20 May 2017
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	* Building on fill.		* Building on fill.
	* Contaminated land.		* Contaminated land.
		+	* Cover systems for land regeneration - thickness of cover systems for contaminated land (BR465).
	* Deleterious materials.		* Deleterious materials.
	* Environment Agency.		* Environment Agency.

Designing Buildings at 09:02, 6 May 2017

2017-05-06T09:02:23Z

← Older revision		Revision as of 09:02, 6 May 2017
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	* Pollution.		* Pollution.
	* Radon.		* Radon.
		+	* Radon: Guidance on protective measures for new buildings BR 211.
	* Site appraisal.		* Site appraisal.
	* Site investigation.		* Site investigation.

Designing Buildings at 08:28, 20 August 2016

2016-08-20T08:28:56Z

← Older revision		Revision as of 08:28, 20 August 2016
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−
	Contaminated land is land that presents a hazard in the form of material that has the potential for harm. Assessment of the risk of harm is based on the likelihood, frequency and seriousness of the adverse consequences of contaminants. See contaminated land for more information.		Contaminated land is land that presents a hazard in the form of material that has the potential for harm. Assessment of the risk of harm is based on the likelihood, frequency and seriousness of the adverse consequences of contaminants. See contaminated land for more information.

−	Where development sites are affected by solid or liquid contaminants, [http://www.planningportal.gov.uk/buildingregulations/approveddocuments/partc/documentc Approved document C, Site preparation and resistance to contaminants and moisture], suggests that the principles of risk assessment should follow the ‘source–pathway–receptor’ relationship, or 'pollutant linkage', where:~~<br/>~~	+	Where development sites are affected by solid or liquid contaminants, [http://www.planningportal.gov.uk/buildingregulations/approveddocuments/partc/documentc Approved document C, Site preparation and resistance to contaminants and moisture], suggests that the principles of risk assessment should follow the ‘source–pathway–receptor’ relationship, or 'pollutant linkage', where:
−	*‘Sources’ are contaminants in or on the ground.	+
−	*‘Receptors’ are the buildings, building materials, building services and people introduced onto the site.	+	* ‘Sources’ are contaminants in or on the ground.
−	*‘Pathways’ are the pollutant linkages between sources and receptors which must be broken or conditioned so they do not pose a significant risk.	+	* ‘Receptors’ are the buildings, building materials, building services and people introduced onto the site.
		+	* ‘Pathways’ are the pollutant linkages between sources and receptors which must be broken or conditioned so they do not pose a significant risk.

	The approved document suggests that this can be achieved by:		The approved document suggests that this can be achieved by:
−	*Treating the contaminant. The use of physical, chemical or biological processes to eliminate or reduce the contaminant’s toxicity or harmful properties.	+
−	*Blocking or removing the pathway. Isolating the contaminant beneath protective layers or installing barriers to prevent migration.	+	* Treating the contaminant. The use of physical, chemical or biological processes to eliminate or reduce the contaminant’s toxicity or harmful properties.
−	*Protecting or removing the receptor. Changing the form or layout of the development, using appropriately designed building materials.	+	* Blocking or removing the pathway. Isolating the contaminant beneath protective layers or installing barriers to prevent migration.
−	*Removing the contaminant.	+	* Protecting or removing the receptor. Changing the form or layout of the development, using appropriately designed building materials.
		+	* Removing the contaminant.

	The assessment of risk should adopt a tiered approach. A preliminary risk assessment should be undertaken, and depending on the outcome, either a generic quantitative risk assessment (GQRA) or detailed quantitative risk assessment (DQRA), or both, may be necessary.		The assessment of risk should adopt a tiered approach. A preliminary risk assessment should be undertaken, and depending on the outcome, either a generic quantitative risk assessment (GQRA) or detailed quantitative risk assessment (DQRA), or both, may be necessary.

	CLR 11 Model Procedures for the Management of Land Contamination, Defra/Environment Agency, 2004 suggests that the stages of risk assessment should be:		CLR 11 Model Procedures for the Management of Land Contamination, Defra/Environment Agency, 2004 suggests that the stages of risk assessment should be:
−	*Hazard identification (the preliminary site assessment). A desk study and site walkover to establish contaminant sources, pathways and receptors and to design exploratory and detailed ground investigations.	+
−	*Hazard assessment. Identify linkages and the potential for unacceptable risks and undertake exploratory site investigation.	+	* Hazard identification (the preliminary site assessment). A desk study and site walkover to establish contaminant sources, pathways and receptors and to design exploratory and detailed ground investigations.
−	*Risk estimation. Assess the degree of harm that may result to which receptors and undertake detailed ground investigation	+	* Hazard assessment. Identify linkages and the potential for unacceptable risks and undertake exploratory site investigation.
−	*Risk evaluation. Consider whether the risks are acceptable.	+	* Risk estimation. Assess the degree of harm that may result to which receptors and undertake detailed ground investigation
		+	* Risk evaluation. Consider whether the risks are acceptable.

	If unacceptable risks to a receptor are identified, remedial measures must be used to break the pollutant linkages.		If unacceptable risks to a receptor are identified, remedial measures must be used to break the pollutant linkages.

	Depending on the contaminant, three types of remedial measures can be considered:		Depending on the contaminant, three types of remedial measures can be considered:
−	*Treatment.	+
−	*Containment.	+	* Treatment.
−	*Removal.	+	* Containment.
		+	* Removal.

	Treatment may include biological, chemical and physical techniques carried out on or off site to decrease the mass, concentration, mobility, flux or toxicity of contaminants.		Treatment may include biological, chemical and physical techniques carried out on or off site to decrease the mass, concentration, mobility, flux or toxicity of contaminants.
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	=== Related articles on Designing Buildings Wiki ===		=== Related articles on Designing Buildings Wiki ===
−	*Brownfield land.	+
−	*Contaminated land.	+	* Brownfield land.
−	*Deleterious materials.	+	* Building on fill.
−	*Environment Agency.	+	* Contaminated land.
−	*Ground conditions.	+	* Deleterious materials.
−	*Landfill tax.	+	* Environment Agency.
−	*Methane and other gasses from the ground.	+	* Ground conditions.
−	*Pollution.	+	* Landfill tax.
−	*Radon.	+	* Methane and other gasses from the ground.
−	*Site appraisal.	+	* Pollution.
−	*Site investigation.	+	* Radon.
−	*Soil survey.	+	* Site appraisal.
		+	* Site investigation.
		+	* Soil survey.

	=== External references ===		=== External references ===
−	*Guidelines for combined geoenvironmental and geotechnical investigations, Association of Geotechnical and Geoenvironmental Specialists.
−	*BS 5930:1999+A2:2010. Code of practice for site investigations.
−	*BS 10175:2011 Code of practice for investigation of potentially contaminated sites.
−	*Human health toxicological assessment of contaminants in soil (Science report – final SC050021/SR2), Environment Agency.
−	*Updated technical background to the CLEA model (Science Report: SC050021/SR3), Environment Agency.
−	*CLR 11. Model Procedures for the Management of Land Contamination. Defra/Environment Agency, 2004.
−	*Environment Agency R & D Technical Report P5-065 Technical aspects of site investigation, 2000.
−	*Environment Agency R & D Technical Report P5-066 Secondary model procedure for the development of appropriate soil sampling strategies for land contamination

−	[[Category:Health_and_safety_/_CDM]]	+	* Guidelines for combined geoenvironmental and geotechnical investigations, Association of Geotechnical and Geoenvironmental Specialists.
−	[[Category:Regulations]]	+	* BS 5930:1999+A2:2010. Code of practice for site investigations.
		+	* BS 10175:2011 Code of practice for investigation of potentially contaminated sites.
		+	* Human health toxicological assessment of contaminants in soil (Science report – final SC050021/SR2), Environment Agency.
		+	* Updated technical background to the CLEA model (Science Report: SC050021/SR3), Environment Agency.
		+	* CLR 11. Model Procedures for the Management of Land Contamination. Defra/Environment Agency, 2004.
		+	* Environment Agency R & D Technical Report P5-065 Technical aspects of site investigation, 2000.
		+	* Environment Agency R & D Technical Report P5-066 Secondary model procedure for the development of appropriate soil sampling strategies for land contamination
		+
		+	[[Category:Health_and_safety_/_CDM]] [[Category:Regulations]]

Designing Buildings: moved Solid and liquid contaminants risk assessments to Solid and liquid contaminants site risk assessments

2015-10-01T14:33:54Z

moved Solid and liquid contaminants risk assessments to Solid and liquid contaminants site risk assessments

← Older revision

Revision as of 14:33, 1 October 2015

Designing Buildings at 09:31, 26 August 2015

2015-08-26T09:31:55Z

← Older revision		Revision as of 09:31, 26 August 2015
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	*Ground conditions.		*Ground conditions.
	*Landfill tax.		*Landfill tax.
		+	*Methane and other gasses from the ground.
	*Pollution.		*Pollution.
	*Radon.		*Radon.