Geoelectrical Monitoring of a Decommissioned Landfill in Thessaloniki (N. Greece)

In this work we present an ERT monitoring case study in the Derveni Landfill (Thessaloniki, N. Greece). The landfill was subjected to reclamation in 2006, but recently, leakage of water polluted with leachate was observed. In order to investigate the problem a dense network of 2D ERT measurements was carried out at larger scales. In this work the results of the time-lapse ERT measurements obtained over this area are presented. Despite the lack of permanent monitoring installation the repeated time-lapse ERT data illustrate that, even at relatively sparse time intervals, they can provide high value and low cost information which is valuable for evaluating the overall progress of the remediation process.