Risk Assessment of Petroleum Hydrocarbons in Groundwater

2012 Summer Workshops



Petroleum hydrocarbons are hazardous substances under the Groundwater Regulations and one of most the most common and problematic contaminants impacting groundwater resources. The workshop aims were to:

  • Give the background on analytical and forensic methodologies for petroleum hydrocarbons and discuss how to take the most appropriate samples in site investigation;
  • Examine the key issues in risk assessment modelling and vapour risk assessment; and
  • Present developments in policy covering Groundwater Regulations, Part 2a and ongoing initiatives. The workshop followed the same format as previous SoBRA summer workshops with thought-provoking presentations in the morning followed by an afternoon of break-out session discussion groups.


Programme & Links to presentations (*requires login)

9:30 am Registration, tea and coffee

9:50 am Chair’s Introduction – Simon Firth (Firth Consultants)

10:00 am Analysis of petroleum hydrocarbons and environmental forensics* – Hazel Davidson (Derwentside Environmental Testing Services)

10:35 am Site Investigation and Sampling, CSMs & Data Quality Objectives* – Jon Parry (SLR Consulting)

11:05 am Refreshment Break

11:25 am Policy issues for hydrocarbon contamination in groundwater* – Trevor Howard (Environment Agency)

11:55 pm Risk assessment modelling for petroleum hydrocarbons in groundwater* – Dr Mike Carey (AMEC)

12:30 pm Report from SoBRA vapour risk sub-group* – Simon Clennell-Jones (WSP Environment & Energy)

12:45 pm Recent developments to improve the evaluation of vapour intrusion of petroleum hydrocarbons from groundwater* – Robert Ettinger (Geosyntec Consultants)

13:10 pm Lunch

14:00 pm Workshops – Delegates will be divided into groups to undertake workshops.
Refreshments will be made available during the workshops. Each group will have a facilitator.

  • Group 1: Site investigation and sampling
  • Group 2: Laboratory analysis and environmental forensics
  • Group 3: Groundwater risk assessment modelling & developing guidance
  • Group 4: Assessment of vapour risk

15:45 pm Workshop Groups report to meeting

16:30 pm Round up of the day and meeting close – Simon Firth (Firth Consultants)