The first row of Table 4 shows TCLP leachable concentrations of Cd, Cu, Ni, Pb, and
Zn after stabilization with 10% of CaHPO4 on days 7 and 14. Generally, the leachable
concentrations on the 14th day were lower than on 7th day, except for Ni, which did not
show significant change. This indicated that the stabilization reaction was effective for more
than seven days.