Quasi-Monte Carlo based global uncertainty and sensitivity analysis in modeling free product migration and recovery from petroleum-contaminated aquifers

► This paper presents a global uncertainty and sensitivity analysis (GUSA) framework. ► GUSA's major advantage lies in alleviation of computational effort. ► Initial free product thickness has the most significant impact on total recovery volume. ► Total recovery volume and recovery rate are sensitive. ► Residual thickness would remain high and almost unchanged after half-year of skimmer-well scheme.