Localized subsidence induces tensile stresses in geomembranes, which can threaten the final cover integrity. The magnitudes of the tensile stress can be viewed as a function of the dimensions of the subsidence zone and the properties of the cover soil. Allowable tensile stress of a geomembrane is usually known; in order to ensure the stability of final cover, the tensile stress allowable by a geomembrane should exceed the calculated value for tensile stress induced by waste.[2]