The untreated soil contained lead totals of 31,300 mg/kg that was leaching at 368 mg/L. A dosage rate of 4% EnviroMag Coarse reduced the lead leachability to 0.90 mg/L (TCLP standard of 5.0 mg/L). This was a 400% reduction in leachable lead. Client selected a 3% dosage rate for this site.
