POST IN-SITU SOIL RECLAMATION WITH A BOMAG RECYCLER

As a result of contamination from a smelter near the surveyed property, detailed mapping and field observations were used to determine why some areas had elevated lead and arsenic levels. Areas where surface soil was left mostly undisturbed showed a marked higher level of contaminants only in the top three inches. Areas that were subject to regional changes such as storm drainage, areas where clean fill was added, or roads revealed a more uneven distribution of contamination. Subsequent depth sampling revealed that downward advection of lead and arsenic is minimal. When assuming a depth of tilling, one can predict the final concentration with calculated averages of concentrations and compare them with field screening. The results of this effort makes for a robust template for future activity. By better analysis of all the data, cost of soil mitigation can be greatly reduced!