It can be seen from the two figures that the soil pollution rang above the water table is mainly
concentrated within the range of 40m around the leakage point, the pollutant concentration reaches the
maximum in the leakage point, and declines along both sides. In Figure 4, the measured soil concentration
under the surface of 1~2m in borehole ZK09、ZK10、ZK11 is higher, this is mainly caused by excavated
soil stacking and the pollutants moving down after the accident.