In the user interface, press the "Read Geo File" button and select the initial_soil_investigation_subsite.geo file as shown below.

Choose Accept All Current Values in Krig_3D_Geology.
Delete the connection between Krig 3D Geology and the viewer module.
Instance geologic_surface under Krig_3D_Geology.
Connect the output data port (blue gray green) on the Krig 3D Geology to the same colored input port on geologic_surface.
Connect the red output port of geologic_surface to the viewer module.

The image we see below is the image of our surface on our shaped to our grid. The colors indicate the elevations of our data points at those locations.