K. Kayabali et al., Integrated use of hydrochemistry and resistivity methods in groundwater contamination caused by a recently closed solid waste site, ENVIR GEOL, 36(3-4), 1998, pp. 227-234
In order to investigate the groundwater ies aimed at defining the spatial c
ontamination by solid waste disposal using both ies aimed at defining the s
patial hydrochemical and geophysical methods, the Halkali (Istanbul) solid
waste disposal site which was closed in 1994 was investigated. The disposal
site lies on a ridge between two valleys filed with alluvium. A total of s
ix boreholes were drilled on two lines across the Menekse valley adjacent t
o the Halkali site. Groundwater samples collected from these boreholes were
analyzed for various contaminant parameters. The results indicate that TDS
and chloride concentrations decrease horizontally away from the waste site
whereas they increase with depth. Electrical soundings carried out at 12 l
ocations yielded high resistivity values at the upstream part of Menekse va
lley while lower values were obtained from the locations near the leachate
seepage points.