Water permeability of the substrate (environmental atlas)

Thickness of the highly to medium water-permeable layer from the surface to a depth of 5.0 m below the upper edge of the terrain and between a depth of 1.0 to 5.0 m below the upper edge of the terrain. Information aid for leaching operations, it does not release the obligation for individual projects to demonstrate the hydraulic site conditions for leaching plants by prospecting or drilling on site.本数据集包含高至中等透水层（highly to medium water-permeable layer）的厚度数据，该透水层分布于地形上缘下方1.0米至5.0米的深度区间内，厚度统计范围为地表（即地形上缘）至地形上缘下方5.0米处。本数据仅作为浸出作业的参考信息，并不免除单个项目需通过现场勘探或钻探以验证浸出厂所需场地水文地质条件的义务。