Transcription of Chapter 3: Construction Methods and Activities - Hudson …
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Chapter 3: Construction Methods and Activities - Hudson …
Draft EIS and Draft Section 4(f) Evaluation 3-1 June 2017 Chapter 3: Construction Methods and Activities INTRODUCTION This Chapter describes the Construction Methods and Activities for the Hudson Tunnel Project s Preferred Alternative. The Preferred Alternative has two overarching components: (1) the Construction of a new trans- Hudson tunnel (the Hudson River Tunnel) and associated surface and rail system improvements; and (2) the rehabilitation of the existing North River Tunnel. To ensure that the passenger rail system continues to operate at existing service levels during Construction , the new tunnel would be constructed and put into operation before the rehabilitation of the North River Tunnel occurs. The Project Sponsor that will advance the Project through final design and Construction , including compliance with mitigation measures, has not yet been identified.
the Hudson River to the Manhattan bulkhead, the tunnel would be constructed underground through various types of rock and mixedface ground conditions. East of the Manhattan - bulkhead, the tunnel would be constructed though mixed-face soils, some of which would require stabilization for the excavation, to the Manhattan shaft site.
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