<< Click to Display Table of Contents >> Navigation:  Chapter 4 Models > Editing a Model > Editing a Horizontal Migration Model > Source and Hydraulic Heads

To edit the source and hydraulic head data for a model click on the Source and Hydraulic Heads tab on the left side of the model form.

 

 

The source parameters are the same as those for a Primary Landfill Model and are described in that section.

 

Hydraulic Heads

 

Infiltration in to Attenuation Layer: This is the downward infiltration due to precipitation in the attenuation layer (aquitard). The infiltration will have the effect of removing contaminant by acting as a passive sink with inflow. To avoid this effect set the infiltration into the attenuation layer to zero.

 

Head in the Waste: This is the head in the waste, relative to the same datum (depth) as the head in the attenuation layer (aquitard).

 

Head in the Aquitard: This is the head in the aquitard (attenuation layer) at a location outside of the barrier (liner system).

 

Distance between Head Measurements: This is the horizontal distance between the two head measurements above.