الفهرس 
INTODUCTIONOnly 14 pages are availabe for public view
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Abstract
Tenth of Ramadan city is a leading industry city that was constructed on the desert edges of the east Nile Delta area, Egypt. It is located on the southern part of East Nile Delta on the Cairo-Ismailia desert road at kilometer 46 of the Cairo and covering an area ~ 42 km2. The city suffers from many environmental and geotechnical problems, which are presented by raised soil water level in the central part of the city, increasing groundwater salinity in some drilled wells and existing of clay layer in lenses form that may act as a geological barrier in the city. A large quantity of wastewater is collected in three oxidation ponds raising serious environmental concern in the east of Tenth of Ramadan city and extended to Cairo-Ismailia desert road. Since 1980, the domestic and industrial wastewater of the city have been collected and disposed in these ponds. Surface wastewater seepages are observed on large swathes at the study area, which represent areas of seriousness on the subsurface layers and the groundwater. In the present work, the DC resistivity method in the form of 1D and 2D was applied for wastewater percolation monitoring in the area around the oxidation ponds. The resistivity measurements were integrated with laboratory studies of soil samples to estimate grain size, porosity, clay contents and degree of saturation. According to the former Schlumberger sounding survey, six 2D resistivity profiles were measured closed to the ponds. Wenner beta (WB) and pole-dipole (PD) electrode arrays were selected for 2D resistivity imaging based on prior synthetic modelling. A conventional derivative-based inversion with cell-model provides valuable constraints to interpret the 2D resistivity measurements.