The Bergen Basin on the northwestern edge of John F. Kennedy International Airport is considered one of the most polluted bodies of water in New York City, as after heavy rainfall untreated sewage is discharged into it from overloaded sewers. New York's Department of Environmental Protection therefore ordered the construction of additional pipeline capacities so the wastewater could be reliably carried to the treatment plant.
For three pipe jacking sections the contractor used AVN technology from Herrenknecht to safely handle the challenging ground conditions. Particularly tricky was the crossing of the Belt Parkway, one of the vital traffic arteries for the inhabitants of Brooklyn and Queens. An existing sewer line had to be passed safely at a distance of only 25 centimeters.
The two AVN machines from Herrenknecht proved themselves with their 90 and 2 x 105 meter drives 3 – 4.5 meters below the water table in partially sandy ground. In December 2016 the last of the three drives was successfully completed.