| Title: |
Benzo[a]pyrene– Use of Excess Lifetime Cancer Risk Estimates
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| Resource Type: |
document --> guidance / decision support
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| Country: |
United Kingdom
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| Year: |
2008 |
| Availability: |
Contaminated Land Clarification Note – No. 1 HPA-CLCN-1
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| Author 1/Producer: |
Health Protection Agency
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| Author / Producer Type: |
Agency, regulator or other governmental or inter-governmental body
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EUGRIS Keyword(s): |
Contaminated land-->Contaminants-->PAH
Contaminated land-->Risk assessment-->Receptor: Human health
Diffuse pollution-->Contaminants-->Persistent Organic Pollutants
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| Short description: |
EXTRACTS:
Benzo[a]pyrene (B[a]P) is a polycyclic aromatic hydrocarbon (PAH) that is the product of both
natural and anthropogenic processes. In addition, it is environmentally persistent and is therefore
a common soil contaminant.
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| Long description: |
When calculating site assessment criteria for contaminated land, it has become common practice
among some contaminated land consultants to state that the index dose represents a categorical
risk of 1x10-5 (1 additional cancer per 100000 people), and then set a separate benchmark for
unacceptable risk at 1x10-4 (1 additional cancer per 10000 people). The index dose is then
multiplied by 10, so that it nominally represents that level of risk. However, given uncertainties in
techniques used to produce ELCR values as well as the position of COC, the HPA cannot
support this approach or any deviation from the authoritative index dose which is defined for
B[a]P in TOX2 (see: http://www.eugris.info/displayresource.asp?ResourceID=3751&Cat=document).
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Submitted By:
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Professor Paul Bardos WhoDoesWhat?
Last update: 30/10/2008
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