Interim Report - Hanford Site

tions of phosphorus are at or below background groundwater concentrations. Thus, the potential for
downgradient transport and potential migration to the river is minimal.
3.2.2.2 Transport
% Removed
100
80
60
40
20
Phosphorus
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Pore Volume
Figure 18. Representative Plot Depicting
the Removal of Phosphorus by Sorption
and Precipitation Reactions
Column experiments were conducted to quantify the
mobility of ortho-, pyro-, and tripolyphosphate,
individually and as a mixed formulation, to evaluate
differences in retardation due to interaction between the
various phosphate compounds and to evaluate the mobility
of calcium to determine the volume of remedy necessary
to treat the desired zone. Saturated column tests were
conducted with the