Figure 8
From: Imaging LNAPL distribution at a former chemical plant with time-domain induced polarization

Averaged inversion results between 2 m bgs to 6 m bgs for all six profiles in (a) conductivity, (b) phase, (c) normalized chargeability. Conductivity less 5 mS/m interprets contaminated area enclosed with black dashed lines, and orange dashed lines indicate source zone with normalized chargeability below 80 mS/m, which corresponds to a phase below 20 mrad. The red dots represent the contaminated sampling locations between 2 m bgs to 6 m bgs, and the blue dots represent non-contaminated sampling locations.