Located in Massachusetts Bay, approximately 13 miles offshore in U.S. federal waters, the Northeast Gateway Energy Bridge Deepwater Port consists of two subsea Submerged Turret Loading™ buoys to support the docking of specially designed Energy Bridge™ Regasification Vessels, each capable of transporting approximately 2.9 billion cubic feet of natural gas condensed to 4.9 million cubic feet of Liquefied Natural Gas (LNG). A subsea pipeline laterally connects to a main submarine gas transmission line. Tetra Tech has provided siting, permitting, licensing, and environmental compliance services to this important offshore infrastructure.

Tetra Tech developed the location siting and alternatives analysis and impact analysis for the port, and prepared environmental reports, permit applications, and filings with the United States Department of Transportation Maritimes Administration; the U.S. Coast Guard; and other federal, state, and local agencies. Tetra Tech also supervised the outreach efforts to Gloucester and Salem, Massachusetts, and other North Shore communities, and is responsible for managing environmental compliance and monitoring in support of port operations.

The port is now operational, and Tetra Tech is managing all of the environmental monitoring programs, including air, water quality, marine mammals, and marine biological resources. We provide field monitoring during port calls to ensure compliance with air emissions, water discharges, and impingement/entrainment as required by the U.S. Environmental Protection Agency and National Oceanic and Atmospheric Administration (NOAA) National Marine Fisheries Service regulations. Tetra Tech has developed and implemented a successful NOAA-approved marine mammal and sea turtle identification, monitoring, and avoidance training program to educate vessel crew and mitigate the potential for ship strike of whales, especially the critically endangered North Atlantic right whale.