To limit the probability that the presence of water within the area to be waterproofed will lead to an improperly prepared surface, which could lead to an inadequate substrate, which could lead to improper application of the waterproofing, which could lead to discontinuity in the waterproofing, which could lead to an inadequate resistance to moisture transfer from the ground, under hydrostatic pressure, which could lead to the ingress of moisture from the ground, which could lead to deterioration, which could lead to compromised structural integrity of elements supported or protected by the walls, which could lead to harm to persons.