The Huizhou, Guangdong landfill project covers an area of 90,000 square meters. The landfill is currently operational, equipped with a double-layer 2.0mm polyethylene geomembrane for impermeability. Integrity testing of the impermeable lining is conducted using the high-density resistivity method. Analysis of subsequent data indicates that the landfill's impermeability system is in good condition, with no leakage points detected.