The Finished Excavation, circa 1968

GEORGE TAMARO: We excavated down to depths of 70 feet for three reasons. First, it was important to carry the foundations down to bedrock, so that there would be substantial supporting material to carry the loads of the towers. Secondly, it was necessary to completely expose the old PATH tubes and to eventually redirect them within the bathtub. Lastly, the station for the PATH system was moved to the lower elevation of the PATH trains, so the bottom of the excavation had to be carried down at least to the level of the tunnels, if not below, for a new station which was located on the eastern edge of the slurry wall, within the bathtub. Directly east of the Greenwich Street slurry wall is the 1 and 9 subway train, approximately 20 to 30 feet below street level.

<< 3 of 4 >>