Sampling Groundwater in a DNAPL Source Zone

Managing Uncertainty when Low-Flow Sampling

At this year’s Land Remediation Expo at the NEC in Birmingham, September 11-12, 2019, I am presenting a summary of practical findings arising from research at the University of Birmingham related to the complexity of sampling groundwater in a DNAPL Source Zone.

In earlier blogs I’ve looked at how guidance for low-flow sampling has evolved, how low-flow guidance and practice are inconsistent, and why “screen volume” could provide a guiding metric to improve confidence in the interpretation of a groundwater sample collected, particularly in areas of complex contaminant distribution.

Here are a few slides from the draft presentation to give a flavor of the material being covered and some of the outcomes and conclusions.



I look forward to welcoming some of you to the seminar in Birmingham in September.

Graphics are from the original paper:

McMillan, L.A., Rivett, M.O., Wealthall, G.P., Zeeb P. & Dumble P, 2018. Monitoring well utility in a heterogenous DNAPL source zone area: Insights from proximal multilevel sampler wells and sampling capture-zone modelling. Journal of Contaminant Hydrology 2018, V210, 15-30. https://doi.org/10.1016/j.jconhyd.2014.05.0015

 

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©Peter Dumble 2019
Peter.Dumble@pdhydrogeology.com