September 19, 2023
Thomas V. Wooden, Jr.
Vice President, Engineering and Asset Management
Enbridge, Inc.
5400 Westheimer Court
Houston, Texas 77056
Re: Docket No. PHMSA-2021-0052
Special Permit from September 19, 2023, to September 19, 2033
Dear Mr. Wooden:
On April 5, 2021, pursuant to the 49 Code of Federal Regulations (CFR) § 190.341, Sabal Trail Transmission, LLC (STT)1 applied to the Pipeline and Hazardous Materials Safety Administration (PHMSA) for a special permit to waive compliance with 49 CFR § 192.611 for Class 1 to Class 3 location changes of approximately 10.13 miles of the 36-inch diameter Line 1 pipeline (Pipeline) located in Sumter County, Florida. A gas transmission pipeline operator is required by 49 CFR § 192.611 to confirm or revise the maximum allowable operating pressure (MAOP) of a pipeline segment where the class location has changed as defined in 49 CFR § 192.5.
On August 26, 2021, PHMSA published a Federal Register notice (86 FR 47734), announcing the Special Permit Request. The Special Permit Request letter, Final Environmental Assessment (FEA) and Finding of No Significant Impact (FONSI), Special Permit Analysis and Findings (SPAF), and all other pertinent documents for this special permit are available in Docket No. PHMSA-2021-0052 in the Federal Docket Management System located at www.regulations.gov.2
PHMSA grants this special permit (enclosed) based on the information provided by STT and the findings set forth in the SPAF, FEA, and FONSI. This special permit permits STT to operate the 36-inch diameter Line 1 from the outlet of Dunnellon compressor station (Mile Post (MP) 395.73) to the inlet of the Reunion compressor station (MP 482.3) at or below a MAOP of 1,355 pounds per square inch gauge (psig). STT is required to comply with conditions and limitations designed to maintain pipeline safety as defined in the special permit. If STT elects not to implement the special permit conditions, STT must notify PHMSA within 60 days and comply with 49 CFR § 192.611 within 18 months of the date of this letter.
My staff is available to discuss this special permit or any other regulatory matter with you. Mary L. McDaniel, Acting Director of PHMSA Engineering and Research Division, may be contacted at (713) 272-2847, on technical matters, and Greg Ochs, Director, Office of Pipeline Safety, Central Region may be contacted at (816) 329-3814, for operational matters specific to this special permit.
Sincerely,
Alan K. Mayberry
Associate Administrator for Pipeline Safety
Enclosure: Special Permit – PHMSA-2021-0052
1. Sabal Trail Transmission, LLC is a subsidiary of Enbridge, Inc.
2. https://www.regulations.gov/docket?D=PHMSA-2021-0052.