During in situ remediation of contaminated groundwater, a treatment solution is often injected into the contaminated region to initiate reactions that degrade the contaminant. Degradation reactions only occur where the treatment solution and the contaminated groundwater are close enough that mixing will bring them together. Degradation is enhanced when the treatment solution is spread into the ...

The size of the contaminant is about 30 mm, and there appear to be parts that are transparent and parts that are brown in color. We conducted analysis at 2 sites that were different in color. The spectra obtained from these sites are shown in overlaid fashion in Fig. 3. Since this contaminant was found in a riceball, there is a possibility of it being an ingredient of the riceball that was adhe...

[1] The goal of groundwater contaminant plume interpolation is to provide an accurate representation of the spatial distribution of the plume given the data limitations associated with sparse monitoring networks with irregular geometries. Currently available methods for plume estimation cannot fully take advantage of prior knowledge of flow and transport information or the location of a contami...

Heterogeneity of contaminants in soils can vary spatially over a range of scales, causing uncertainty in environmental measurements of contaminant concentrations. Sampling designs may aim to reduce the impact of on-site heterogeneity, by using composite sampling, increased sample mass and offsite homogenisation, yet they could overlook the small scale heterogeneity that can have significant imp...