GNGTS 2017 - 36° Convegno Nazionale

616 GNGTS 2017 S essione 3.2 with 6 electrical cables, where 36 stainless steel electrodes spaced 5 cm from each other are placed, to allow an electrical monitoring of the pollution phenomenon. The steel electrodes have been connected to a georesistivimeter through two multichannel cables (Syscal Pro, Iris Instrument) to perform time lapse investigations. LNAPL (one liter of common diesel with a density of about 0.83 g/cm 3 ) spill is simulated using a slotted pipe placed between AB and CD boreholes. Fig. 1 - Sketch of the test site, plan (a) and longitudinal section (b). Fig. 2 - Hydrogeophysical system realized in laboratory.