With the exception of RW-5 and RW-7, the RWs demonstrated fractional flux reductions

from 0.46 to 0.78. The average MLS values ranged from 0.49 to 0.99 with the exception of

MLS-5 which showed large increases in PCE concentration as depth increased. This could be an

indication of PCE mobilization into the flow zone between IW-3 and MLS-5/RW-5. Generally,

flux reductions decreased with depth increase in the MLS results. However, in MLS-7 the flux

increased at 8.69 m bgs. In the mid to lower-middle depths, MLS-1 and MLS-3 showed less

reduction in PCE concentration than other wells. For the entire data set, there was a weak

correlation between flux reduction and initial PCE saturation, unlike fractional NAPL removal

(Figure 2-15). Furthermore, there was no relationship of initial PCE aqueous concentration to

FFR.

 The results of the fractional NAPL removal and fractional flux reductions will be further

assessed in Chapter 4 in section 4.3, the benefits of ethanol flushing.