Hydrogeo-chemical impacts of air sparging remediation on a semi-confined aquifer: Evidences from field monitoring and modeling

► AS' physical perturbation on aquifer was revealed in field for the first time. ► Temperature, DO and groundwater table were used to determine ZOI in field. ► Original math modeling shows minor water lateral movement within ZOI. ► Groundwater mounding was featured by blocked dissipation and continuous up-lift. ► AS' hydro-chemical impacts are mainly on pH, Eh, TDS and HCO3-.