GROUNDWATER MODELING & VISUALIZATION


Figure 5. Playlist and models used to create mass flux transects for contaminants within flood deposits.


9. Converting the K Model to a BPI Model: The K mod- el was truncated above by a MHWL grid model and then - gies with K-values less than 0.005 were converted to zero while voxels equal to or above 0.005 were set to 1.0.


10. Extracting Connected Geobodies:    was applied to the BPI model to identify contiguous vox- els with the same G-values. The largest geobody (Figure     - quent geochemical modeling because it corresponds to the point source for the TCE contamination. In other words, it was assumed there is no hydraulic communica- tion with the other permeable geobodies.


11. Creating Time-Based Geochemical Models: The geo- body BPI model (Figure 4G) was used to constrain the time-based geochemical model interpolation (Figure 4H).


www.aipg.org


This modeling was based on an anisotropic inverse-dis- tance weighting algorithm.


12. Creating Time-Based Animations: The quarterly an- nual geochemical models were combined into a 30-second video that includes an animation of the TCE contamina- tion as it migrates and dilutes from May through No- vember of 2018. These animations use a morphing tech- nique that interpolates hundreds of transitional models between each quarterly model to minimize the jerkiness. This video can be viewed at https://youtu.be/FSzdiAXj_ Cg.


Strategy #3 – Groundwater Contamination Within a Flood Deposit


In this example, TCE and Research Department Explosive (RDX) contamination data from 43 boreholes along with hy-


Oct.Nov.Dec 2022 • TPG 11


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