Columbia Gas Transmission, LLC D74 Booster Compressor Project Update

Columbia Gas Transmission, LLC has provided a weekly construction status report to the Federal Energy Regulatory Commission for the D74 Booster Compressor Project. The report highlights the progress made by the contractor during the reporting period of August 11-17, 2025. The project, which commenced construction on May 6, 2025, has obtained all necessary federal authorizations and is making steady progress with excavation activities, welding, and wiring installation.

Key Takeaways:

  • The contractor has continued with excavation activities, receiving construction materials, performing welding activities, and installing wiring.
  • The contractor has installed concrete forms and will continue assembling the engine, installing wiring, and performing welding activities in the next reporting period.
  • No streams will be crossed during the project, and no problem areas or instances of non-compliance were observed during the reporting period.
  • There were no landowner/resident complaints during this reporting period, and no non-compliances were observed at the time of inspection, resulting in no correspondence with other federal, state, or local agencies regarding compliance with Columbia's environmental plans and permit.

Statistics:

  • 18 C.F.R. SS 157.208(c)(10) of the Commission's regulations: This section governs the Prior Notice of Blanket Certificate Activity and the filing of a weekly Environmental Inspector report.
  • May 6, 2025: The date when Columbia was authorized to commence construction activities on the D74 Booster Compressor Project.
  • August 11-17, 2025: The reporting period covered in the latest construction status report.
  • 100%: The percentage of federal authorizations obtained for the project.

Sources:

  • Federal Energy Regulatory Commission (FERC)
  • Columbia Gas Transmission, LLC D74 Booster Compressor Project Docket No. CP25-83-000
  • 18 C.F.R. SS 157.208(c)(10)
  • Columbia Gas Transmission, LLC (www.tcenergy.com)