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Uncertainty in Human Health Risk Assessment

2015 Summer Workshops

Date: 15th July 2015

Venue: North East Institute of Mining & Mechanical Engineering, Newcastle-upon-Tyne. NE1 1SY

The aim of the workshop was to identify, characterise and address key areas of uncertainty with a focus on developing improved approaches that can be applied to specific aspects of human health risk assessment. The workshop consisted of a series of presentations in the morning followed by discussion in the afternoon. The topics covered in the breakout sessions included:

  • Conceptual Site Model
  • Site Investigation
  • Bioaccessibility
  • Exposure

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Programme & Links to presentations (* required login)

9:30 am Registration, tea and coffee

9:45 am Chair’s Introduction – Christopher Taylor

9:55 am Uncertainty in general terms* – Andy Hart (FERA)
View of different approaches to uncertainty; developing methods for the analysis of risk and uncertainty

10:25 am Uncertainty in site investigation and the conceptual site model* – Jonathan Welsh (Aecom)
Identifying and minimising uncertainties in the CSM; optimising sampling strategies; modelling and statistical methods to estimate uncertainty; deciding how much uncertainty is acceptable

10:55 am Exposure parameters* – Simon Firth (Firth Consultants)
Review of exposure parameters within DQRA

11:25 am Refreshment Break

11:45 am Bioaccessibility* – Mark Cave (British Geological Survey)
Appropriate use of bioaccessibility in risk assessment; pros and cons of bioaccessibility

12:15 am Toxicology evaluation and uncertainty- where science and society meet – a case study on Trichloroethylene* – Camilla Pease
A case study to highlight how assessment factors and uncertainty can be factored into the overall tox evaulation of a specific contaminant.

12:45 pm Introduction to afternoon workshops

1:00 pm Lunch

1:45 pm Workshops
Delegates will be divided into groups to undertake workshops.
Refreshments will be available during the workshops. Each group will have a facilitator.

  • Group 1: Conceptual site model
  • Group 2: Site investigation
  • Group 3: Bioaccessibility
  • Group 4: Exposure parameters

3:25 pm Refreshment break

3:45 pm Workshop Groups report to meeting

4:30 pm Round up of the day and meeting close – Christopher Taylor