Conceptual modeling

Highlights
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Conceptual model development The setup of the conceptual model for the Akacievej field site is going to be explained. Geologic model Setup of a geologic model based on larger scale geology, borehole information, borehole cores, geophysical measurements etc. Geology at the Akacievej site Flow field To evaluate, where contaminants may migrate, it is important to have knowledge about the local flow field. At the Akacievej site, a measurement campaign with to determine groundwater flow field in the larger plume area was done. Therefore, the hydraulic heads in a larger area around the Akacievej site were leveled on the same day. An extent of the measurement area larger than the plume is beneficial, so flow models with little influence of the boundaries on the flow field can be setup. Further, often there are too few boreholes in the vicinity, which makes it difficult to make a local isopotential map. Flow field at Akacievej determined by head measurements. Determination of aquifer parameters A combination of measures was tested and used to determine the aquifer parameters at the site. A long-term pumping test, short-term pump tests and packer tests, a series of slug tests, a packer test, head measurements of the remediation system and at neighboring waterworks gave information about the hydraulic conditions at the site. A synchronous well sounding round in the larger area allowed to determine the overall groundwater flow field. At the Akacievej site, the remediation system was turned off and on several times while measuring the head changes in the remediation well and in observation wells in the area. The groundwater flow field with the remedial pumping and without could be determined. Tracer tests, information from outcrops etc. Contaminant distribution and dynamics PCE concentration measurements before, during and after the pumping test, combined with previous investigations. Modeling interpretations and conceptual model of the plume propagation. PCE distribution at Akacievej during remediation Return to Content