“…The consequences of human activities finally end up in the deterioration of groundwater quality and quantity. Groundwater has been reported to be contaminated by chlorinated hydrocarbons, petroleum hydrocarbons (TPH), polycyclic aromatic hydrocarbons (PAHs), benzene–toluene–ethylbenzene and xylene (BTEX), energetic chemicals, pesticides, heavy metals, nitrobenzene and mine drainage (Ahmad et al, 2009; Interstate Technology and Regulatory Council, 2011; Newell, 2008; Rasmussen et al, 2002). Various treatment schemes such as bioremediation, chemical oxidation, soil flushing and permeable reactive barriers (PRBs) have been applied as single or combined techniques.…”