1. Quarterly Journal of Engineering Geology and Hydrogeology
Real-world uncertainties during a site assessment of vapour migration into a residential house from soil and groundwater
by Tom Parker, Hannah White, Gareth Taylor, Frank Evans, and Matthew Pearce
Quarterly Journal of Engineering Geology and Hydrogeology
Volume 50(3):
August 1, 2017
© 2017 National Grid and Atkins Ltd

2. Site plan, investigation and cross-section locations.
Tom Parker et al. Quarterly Journal of Engineering Geology and Hydrogeology 2017;50:
© 2017 National Grid and Atkins Ltd

3. (a) Schematic cross-section A–A′ (north–south).
(a) Schematic cross-section A–A′ (north–south). (b) Schematic cross-section B–B′ (west–east).
Tom Parker et al. Quarterly Journal of Engineering Geology and Hydrogeology 2017;50:
© 2017 National Grid and Atkins Ltd

4. Vapour well installation next to house showing granular made ground and natural sand and gravel deposits.
Vapour well installation next to house showing granular made ground and natural sand and gravel deposits.
Tom Parker et al. Quarterly Journal of Engineering Geology and Hydrogeology 2017;50:
© 2017 National Grid and Atkins Ltd

5. (a) Vapour well and groundwater well installation detail.
(a) Vapour well and groundwater well installation detail. VP4 vapour well ground conditions. (b) Groundwater well BH4 installation detail. ES, Soil Sample; PID, Photo Ionization Detector reading.
Tom Parker et al. Quarterly Journal of Engineering Geology and Hydrogeology 2017;50:
© 2017 National Grid and Atkins Ltd

6. Groundwater and vapour variation over time in BH4 and VP4.
Tom Parker et al. Quarterly Journal of Engineering Geology and Hydrogeology 2017;50:
© 2017 National Grid and Atkins Ltd

7. Biotrap. Biotrap. QuantArray® petroleum study.
Tom Parker et al. Quarterly Journal of Engineering Geology and Hydrogeology 2017;50:
© 2017 National Grid and Atkins Ltd