Evaluation of Spread and Mounding

Figure 12.

Typical STFATE model results showing concentration above back-

ground of clay (mg/l) (from Johnson 1992)

Typical STFATE model results showing total volume (ft3/grid

Figure 13.

square) of new material (from Johnson 1992)

Evaluation of Spread and Mounding

The mound or deposit geometry, including contaminated material and

cap, will influence the design of the cap and volume of capping material

required. The smaller the footprint is of the contaminated material as

placed, the less volume of capping material will be required to achieve a

given cap thickness.

Chapter 6 Sediment Dispersion and Mound Development and Site Geometry During Placement