Due to the growing population and oil-dependent industries, the demand for oil products has risen. The increase in oil production, and consequently the higher consumption rate together with the careless use of oil products have aggravated the contamination of water and soil resources, which in turn has led to serious, and sometimes irreparable, harms to the environment.
The amount of the leached contaminants, the flow path, the contaminants' traveling time in soil and water resources, and the concentration of pollutants in various depths are the main points the policy-makers need to determine.
In this study, the researchers utilized a model called RITZ (Regulatory and Investigative Treatment Zone Model) to model the oil products' leaching into the soil and groundwater resources. This model is used not only to evaluate the leaching process, but it also helps us to locate the contaminated zone and to measure the pollutant's concentration. For the calibration of the model, the output data from the RITZ model were compared with the laboratory data as reported in the previous studies. The obtained high correlations and the other results are shown in different tables and graphs.