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Independent regulatory commissions

Tennessee Gas Pipeline Company Submits Revised Abandonment Plan

Strategic Insights

— 1 min read

Tennessee Gas Pipeline Company, L.L.C. has submitted a revised plan for the abandonment of its 507G Line, a 46.66-mile section of pipeline that spans across four parishes in Louisiana. The company proposed to abandon approximately 87.22 miles of pipeline, with 67.42 miles to be abandoned in-place and 19.80 miles to be abandoned by removal. The revised plan corrects a discrepancy in the original proposal, which stated that Tennessee would abandon 4.07 miles in-place and 0.17 mile by removal, totaling 4.24 miles.

Key Takeaways:

  • The Tennessee Gas Pipeline Company's revised abandonment plan proposes to abandon approximately 87.22 miles of pipeline.
  • The company plans to abandon 67.42 miles of pipeline in-place and 19.80 miles by removal.
  • The revised plan corrects a discrepancy in the original proposal, which stated that Tennessee would abandon 4.07 miles in-place and 0.17 mile by removal, totaling 4.24 miles.
  • The proposed abandonment activities include disconnecting and removing aboveground facilities at 23 separate locations.
  • The company will relocate a pigging facility to MLV 507G-103A (507G-103A MP 0.00) as part of the abandonment plan.
  • Two contractor yards will be used on a temporary basis during Project abandonment activities for staging materials and equipment.

Statistics:

  • Total pipeline length to be abandoned: 87.22 miles
  • Pipeline length to be abandoned in-place: 67.42 miles
  • Pipeline length to be abandoned by removal: 19.80 miles
  • Total aboveground facilities to be removed: 23
  • Total pipeline markers to be removed: 39
  • Length of 16-inch diameter pipeline to be abandoned: 64 miles
  • Length of 12-inch diameter pipeline to be abandoned: 9.05 miles

Sources:

  • Tennessee Gas Pipeline Company, L.L.C. 507G Line Abandonment Project, Docket No. CP24-529-000 (Response to June 10, 2025 Environmental Information Request)
  • Federal Energy Regulatory Commission, June 10, 2025 Environmental Information Request
  • Tennessee Gas Pipeline Company, L.L.C. (Letter to FERC Secretary, September 30, 2024)

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