WITHDRAWN - Monitoring of Pollutant Movement Along a Line of Transect within the Freshwater Field of Umm Al-Aish, Kuwait
From an analysis of the data, it has been suggested that the salts derived from seawater and HCs moved together. The concentrations of the total dissolved solids (TDS) and HCs in the groundwater samples along the line of transect have, in general, increased over time though local variations in this trend have been observed. The concentrations of the pollutants, however, show a decreasing trend as one moves away from the oil lake along the line of transect. A reducing condition prevails in the locations where hydrocarbon pollution is significant. The periodic addition of the contaminants by the infiltration of run-off during the rainy season and mostly recalcitrant nature of the hydrocarbon contaminants are the possible reasons for the lack of overall attenuation of the pollution.
The presence of a source of pollutants (e.g., a non-aqueous phase petroleum liquid/NAPL) within the aquifer in the neighborhood of the wells P33U/P-33UA/P-33UB has been suggested on the basis of the depth distribution of pollutants at this site. The decrease in pollutant concentration with distance from these wells and the oil lake is, in all probability, due to dilution through mixing with uncontaminated water.