Because the Final Report Foundation Works Investigation about whether the Granite rock layers are at 4 m depth is not consistent with the fact that the Granite rock layers are at 0.5 m depth level.
The Final Report Foundation Investigation Works stating that the shale at a depth of 4 meters Granite is not consistent with the reality on the ground floor Granite rocks at a depth of 0.5 meters.
Because Final Report Foundation Investigation Works stated that rock Granite is at a depth 4 meters. Not consistent with the fact that rock Granite is at a depth 0.5 meters.