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

solinst petroeum fuel formulations downhole geophysical fracture logging verticle hydraulic profiling multilevel sampling verticle solute profiles distribution of contaminants image

G P Wealthall, S F Thornton and D N Lerner
Groundwater Protection and Restoration Group,
University of Sheffield, UK


Site Characteristics

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:

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.