2 workers in the center of a barge with a drill on the hudson with buildings in the background

Hudson River, New Jersey & New York

Amtrak Hudson River Tunnel

Improving Public Transit Capacity in NY/NJ

During the initial Access to the Region Core (ARC) Project and continuing the current iteration, Matrix is providing environmental services for the preliminary engineering phases of the Hudson River Tunnel Project. The purpose of the project is to expand and improve public transit capacity in the trans-Hudson midtown Manhattan corridor by building a new rail tunnel under the Hudson River and associated infrastructure in both New Jersey and New York, including new tracks and platforms near Penn Station New York. The project’s goals remain to enhance the capacity in the trans-Hudson midtown corridor; to support growth for commuting opportunities from New Jersey and Orange and Rockland counties to Manhattan; to support the economic development of west midtown; to relieve congestion on all trans-Hudson transportation modes; to improve reliability for rail commuters; and (post Superstorm Sandy) to provide an alternative to the existing Amtrak North River Tunnel as to allow closure and rehabilitation efforts.

Matrix is responsible for performing all environmental investigation activities along the entire alignment corridor, including performance of Preliminary Assessments/Phase I Environmental Assessments, Site Investigations, and Remedial Investigations of properties, preparation of sampling and analysis plans, preparation of Preliminary Assessment/Phase I Environmental Assessment and Site Investigation Reports, Remedial Action Workplans, and assistance in the preparation of Property Acquisition Environmental Cost Estimating Reports for properties to be acquired along the right-of-way. Areas to be impacted or acquired as part of this project have a long history of commercial, industrial, and transportation use and have the potential to be impacted by contaminants related to prior uses and historic fill. Other activities included environmental oversight and sampling during geotechnical investigations along the project corridor and within the Hudson River and the performance of hazardous materials surveys at properties to be acquired as part of the project.

Improving Public Transit Capacity

The Gateway Program will increase resiliency and rail capacity along a 10-mile stretch of the Northeast Corridor – the most heavily used rail line in the U.S. carrying 200,000 riders per day. Matrix serves as a vital member of the owner’s representative team supporting Gateway Development Corp. for the initial $15B+ Amtrak Hudson River Tunnel Program, which includes project work for the Portal North Bridge, a New Hudson River Tunnel, rehabilitation of the existing tunnel damaged during superstorm Sandy, and associated infrastructure in both New Jersey and New York. Matrix is providing environmental services during the planning and preliminary engineering phases, design support services during final design and construction, and construction compliance/materials management services during the numerous construction packages to be delivered over the next 10+ years.

Services Provided:

  • Environmental Engineering 
  • Hazardous Materials Surveys
  • Program Management