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
- Low flow groundwater sampling – a misunderstood methodology. Part 1: Evolution of technical guidance.
- Low flow groundwater sampling – a misunderstood methodology. Part 2: Inconsistent Guidance
- New research proposes changes to low flow guidance
©Peter Dumble 2019