Cut-off walls (water intrusion) involve the insertion of tubularochette (hollow tube) into the earth in a strategic grid pattern. Chemical grout is injected throughout the effective water intrusion area through the hollow tube. Thus, permeating through the soil and chemically reacting (expanding) when in contact with water, and providing a barrier to restrict water intrusion.

Cut-off walls (water intrusion) involve the insertion of tubularochette (hollow tube) into the earth in a strategic grid pattern. Chemical grout is injected throughout the effective water intrusion area through the hollow tube. Thus, permeating through the soil and chemically reacting (expanding) when in contact with water, and providing a barrier to restrict water intrusion.