solinst site characteristics aquifer systems mtbe plumes btex plumes tame plumes level specific characterisation contaminant spatial distribution image
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solinst site characteristics aquifer systems mtbe plumes btex plumes tame plumes level specific characterisation contaminant spatial distribution image

Assessing the transport and fate of MTBE
amended petroleum hydrocarbons in the UK Chalk aquifer

G P Wealthall, S F Thornton and D N Lerner
Groundwater Protection and Restoration Group, University of Sheffield, UK
www.sheffield.ac.uk/gprg
solinst site characteristics aquifer systems mtbe plumes btex plumes tame plumes level specific characterisation contaminant spatial distribution image
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solinst site characteristics aquifer systems mtbe plumes btex plumes tame plumes level specific characterisation contaminant spatial distribution image
solinst site characteristics aquifer systems mtbe plumes btex plumes tame plumes level specific characterisation contaminant spatial distribution image

| 1. Intoduction | 2. Site Characteristics | 3. The Chalk Aquifer | 4. Fracture Network Characteristics |
| 5. Hydrogeology | Source Term | 6. Dissolved Phase Plume | 7. Conclusions | Full Paper |
solinst site characteristics aquifer systems mtbe plumes btex plumes tame plumes level specific characterisation contaminant spatial distribution image
solinst site characteristics aquifer systems mtbe plumes btex plumes tame plumes level specific characterisation contaminant spatial distribution image

Exploded diagram of a sampling port in the Solinst® CMT monitoring system
The site is an urban retail petroleum filling station in southern England and overlies the Chalk aquifer, the most important aquifer system in the UK. The site characterisation programme involved the design and installation of multilevel groundwater sampling devices at three borehole locations:
  • Upgradient of the site to determine ‘baseline’ characteristics of the Chalk aquifer
  • 30 m downgradient in the complex BTEX and MTBE/TAME plume
  • 115 m downgradient in the MTBE/TAME-only plume
The boreholes were instrumented with the recently developed continuous multi-channel tubing (CMT) system which has allowed detailed level-specific characterisation of contaminant spatial distribution from seven discrete intervals in a single well.
solinst site characteristics aquifer systems mtbe plumes btex plumes tame plumes level specific characterisation contaminant spatial distribution image
solinst site characteristics aquifer systems mtbe plumes btex plumes tame plumes level specific characterisation contaminant spatial distribution image
.