The excellent anti-seepage effect of geomembrane produced by geomembrane manufacturers plays a very important role in improving "toxic soil". Geomembrane is a kind of anti-seepage material made of high molecular polymer as the basic raw material, which can not only prevent liquid leakage, but also prevent gas volatilization. In terms of the function of geomembrane, such as tensile strength, tear resistance, bursting resistance and other physical and mechanical functions, the products have high performance It is characterized by high strength, good elongation function, large deformation modulus, acid and alkali resistance, corrosion resistance, aging resistance, and good anti-seepage function. Therefore, the geomembrane is an indispensable material for pavement. The biggest characteristic of this kind of geomembrane is that it has a large variability span and can carry forward infinite effect within the range of waterproof.

If the non-agricultural land is converted into agricultural land, the environmental quality assessment of soil and groundwater shall be carried out. Only when it meets the environmental quality standards for agricultural land and groundwater can it be used for agricultural production. Soil pollution is hidden, and the intervention of "toxic land" is likely to be delayed. Therefore, prevention in advance has become the focus of soil pollution control, and comprehensive and timely understanding of pollution information through "normalization" monitoring has become the top priority. Therefore, the Regulation establishes a monitoring and evaluation mechanism of soil pollution combining government investigation with enterprise monitoring. First of all, environmental protection departments should regularly carry out soil environmental quality investigation and pollution source investigation. Secondly, hazardous waste disposal enterprises and other units shall, in accordance with the provisions of the state and this Municipality, regularly monitor the soil and groundwater, and report the monitoring results to the environmental protection department. Finally, the environmental quality assessment of soil and groundwater should be carried out before the transfer, transfer, lease and recovery of industrial land.