摘要：A combination of electrical resistivity and induced polarization methods were applied to a solid waste landll in Alice, Eastern Cape,
South Africa to delineate the lithologic layers and locate possible leachate plumes. Resistivity and IP data were collected along six
proles; VES on two and the dipole-dipole conguration was used in the rest four. e result shows a 4-layered earth system with
a shallow depth to the top of the bedrock (<10 m). Contaminants ranging from unsaturated waste with high ion content to dense
aqueous phase liquid contaminants, characterized by low resistivity (34–80 Ohm-m) and low chargeability values (0.05–5.75 ms).
e contamination was interpreted based on resistivity/IP anomalies considering the background geology. e shallow bedrock
indicated a low risk to groundwater contamination because of its competent nature from its geology, and characteristic high resistivity
values (≥1000 Ohm-m). However, the steep nature of the landll terrain due to its location at the foot of a vertical slope favours the
rapid migration of the contaminants into the immediate vicinity of the landll. e construction of containment structures such as
waste cells will help in enhancing eective waste management practices in the landll.
