Case Study of PRB Application for the Remediation of Groundwater - Permeable Reactive Barrier: Sustainable Groundwater Remediation - page 260

FIGURE 12.6
Installing granular iron from 1 tonne bulk bags (note dust masks and the excavated sand in the
background). (From Orica Ltd.)
4 m bgs. Some of the bulk bags had an inner plastic liner. After two
of these liners inadvertently slipped into the excavation while dis-
charging the iron (and could not be recovered), reinforcement mesh
was installed on top of the excavation to capture other liners (see
Figure 12.7).
6. The excavation was filled to the surface with clean sand (see Figure
12.8). The excavated sand was not reused to avoid complicating
results from the trial with possible contamination in the excavated
material.
FIGURE 12.7
Installing granular iron into the excavation. (From Orica Ltd.)