2.1 Preparation of Oil contaminated Sand
The sample of oil contaminated sand was obtained from Kuwaiti oil lake. In order to enhance the efficiency of measurement efficacy, the process requires the soil to be homogeneous before the washing. 1 kg of sample was screened manually through 13.5 mm sieve for 2 min, to segregate materials finer than gravel coarse aggregate and to separate out the larger clumps of congealed oil residue.