Algonquin Gas Transmission, LLC Submits Sakonnet River Replacement Project Weekly Report #43

Strategic Insights -

The Sakonnet River Replacement Project, initiated by Algonquin Gas Transmission, LLC, involves the replacement of approximately 1.6 miles of existing 6-inch diameter piping on the G-2 System with 12-inch diameter piping. The project, spanning from the Sakonnet River to an existing Algonquin Meter and Regulation (M&R) Station in Portsmouth, Rhode Island, aims to improve the natural gas supply for homes and businesses on Aquidneck Island. As of May 25, 2025, the project has achieved 100% completion of various phases, including mobilization, site preparation, and hydrostatic testing.

Key Takeaways:

  • The Sakonnet River Replacement Project involves the replacement of approximately 1.6 miles of existing 6-inch diameter piping with 12-inch diameter piping using horizontal direction drilling (HDD) and open-cut excavation methods.
  • The project includes the installation of aboveground launcher and receiver traps for inline inspection (ILI) tools to test the pipeline integrity in the future.
  • The Project Limits extend from the east side of the Sakonnet River, in the town of Little Compton, Rhode Island, to the existing Algonquin Meter and Regulation (M&R) Station 00013 in the town of Portsmouth, Rhode Island.
  • The project has achieved 100% completion of various phases, including mobilization, site preparation, noise mitigation controls, erosion/sedimentation controls, and dewatering infrastructure.
  • Erosion control devices (ECDs) have been monitored and maintained as needed, with some ECDs removed where no longer necessary.
  • Stormwater drainage issues persist at the cul-de-sac for Swan Drive, but are associated with nearby construction on a private property unrelated to the project.

Statistics:

  • 1.6 miles of existing 6-inch diameter piping will be replaced with 12-inch diameter piping.
  • 100% completion of mobilization, site preparation, noise mitigation controls, erosion/sedimentation controls, and dewatering infrastructure.
  • 100% completion of horizontal direction drilling (HDD) and open-cut excavation methods.
  • 72% completion of Upland Final Restoration.
  • 45% completion of Wetland Final Restoration.

Sources:

  • [1] Ms. Debbie-Anne Reese, Secretary Federal Energy Regulatory Commission, 888 First Street, NE, Washington, D.C. 20426.
  • [2] Algonquin Gas Transmission, LLC, Sakonnet River Replacement Project, Docket No. CP24-49-000.
  • [3] The Sakonnet River G-2 Replacement Weekly Report #43.