The untreated soil contained lead totals of 3,740 mg/kg that was leaching at 5.63 mg/L, and total zinc concentration of 8,570 mg/kg leaching at 49.8 mg/L. A dosage rate of 2% EnviroMag Coarse reduced the lead leachability to 0.90 mg/L (TCLP standard of 5.0 mg/L for lead, cleanup criteria of 5.0 mg/L for zinc). This was a 28% reduction in leachable lead and a 26% reduction in leachable zinc.
