MountainWest Overthrust Pipeline Motion to Vacate Certificate for Cabin 31 Facilities
Summary
FERC published notice that MountainWest Overthrust Pipeline, LLC filed a motion on March 11, 2026 to vacate the portion of its certificate authorizing the Cabin 31 pig launcher facilities. The company has completed most project facilities creating 325,000 dekatherms/day of capacity but cites delays in obtaining a BLM right-of-way grant and a private landowner agreement as reasons it has not begun construction at Cabin 31. The company states the facilities are auxiliary and unnecessary for full project capacity. FERC seeks comments and interventions by April 28, 2026.
What changed
MountainWest Overthrust Pipeline filed a motion to vacate the portion of its October 2024 certificate authorizing the Cabin 31 pig launcher facilities. The company reports it has constructed most of the Westbound Compression Expansion Project facilities and received authorization to place them in service, providing full 325,000 dekatherms/day capacity without the Cabin 31 facilities. The motion cites delays in obtaining a revised BLM right-of-way grant and failure to reach agreement with a private landowner as preventing construction at Cabin 31.\n\nAffected parties and interested stakeholders may file comments protesting the motion or file to intervene in the proceeding by April 28, 2026. The Cabin 31 facilities remain auxiliary and not necessary for current operational capacity, though the company commits to pursuing installation at a later date for future maintenance and safety purposes.
What to do next
- File motion to intervene by 5:00 p.m. Eastern Time on April 28, 2026
- Submit comments on the motion via FERC eLibrary
- Contact Nicole M. Turpen at (346) 415-5242 or nicole.turpen@williams.com for application details
Archived snapshot
Apr 14, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Content
Take notice that on March 11, 2026, MountainWest Overthrust Pipeline, LLC (Overthrust), 650 South Main Street, Suite 300,
Salt Lake City, Utah 84101, filed in the above-referenced docket a motion to vacate a portion of the certificate authority
granted by the Commission on October 17, 2024. (1) In the Certificate Order, the Commission granted Overthrust a certificate of public convenience and necessity to construct
the Westbound Compression Expansion Project (Project) located in Lincoln and Sweetwater Counties, Wyoming. The Project created
325,000 dekatherms per day of incremental firm transportation capacity from Overthrust's existing Wamsutter Interconnect to
a new Kern River Gas Transmission Company (Kern River) delivery point near Overthrust's existing Roberson Compressor Station.
In its motion, Overthrust states that it has constructed most of the certificated facilities, with the exception of a pig
launcher at its existing Cabin 31 Interconnect Pipeline Facility (Cabin 31). On November 13, 2025, Commission staff authorized
Overthrust to place the completed facilities into service, noting that Overthrust reported that it would be able to provide
the full project capacity without completion of the pig launcher. Overthrust states that, due to a delay in receiving the
revised right-of-way grant from the Kemmerer Bureau of Land Management and not yet reaching agreement with a private landowner,
Overthrust has not begun construction at Cabin 31. Overthrust explains that these facilities are auxiliary and not necessary
to provide the full capacity, but that it will continue efforts to install the Cabin 31 facilities at a later time for future
maintenance and safety of the pipeline. Therefore, Overthrust requests that the Commission vacate the portion of the certificate
for the project that authorizes the Cabin 31 facilities.
In addition to publishing the full text of this document in the
Federal Register
, the Commission provides all interested persons an opportunity to view and/or print the contents of this document via the
internet through the Commission's Home Page (http://www.ferc.gov). From the Commission's Home Page on the internet, this information is available on eLibrary. The full text of this document
is available on eLibrary in PDF and Microsoft Word format for viewing, printing, and/or downloading. To access this document
in eLibrary, type the docket number excluding the last three digits of this document in the docket number field.
User assistance is available for eLibrary and the Commission's website during normal business hours from FERC Online Support
at (202) 502-6652 (toll free at 1-866-208-3676) or email at ferconlinesupport@ferc.gov, or the Public Reference Room at (202) 502-8371, TTY (202) 502-8659. Email the Public Reference Room at public.referenceroom@ferc.gov.
Any questions regarding the application should be directed to Nicole M. Turpen, Senior Counsel, MountainWest Overthrust Pipeline,
LLC, P.O. Box 1396, Houston, Texas 77251-1396, by phone at (346) 415-5242, or by email at nicole.turpen@williams.com.
Public Participation
There are three ways to become involved in the Commission's review of Overthrust's request: you can file comments on the application,
you can protest the filing, and you can file a motion to intervene in the proceeding. There is no fee or cost for filing comments
or intervening. The deadline for filing a motion to intervene is 5:00 p.m. Eastern Time on April 28, 2026. How to file protests,
motions to intervene, and comments is explained below.
For public inquiries and assistance with making filings such as interventions, comments, or requests for rehearing, contact
the Office of Public Participation (OPP) at (202) 502-6595 or OPP@ferc.gov.
Comments
Any person wishing to comment on the application may do so. Comments may include statements of support or objections, to the
application as a whole or specific aspects of the application. The more specific your comments, the more useful they will
be.
Protests
Pursuant to sections 157.10(a)(4) (2) and 385.211 (3) of the Commission's regulations under the NGA, any person (4) may file a protest to the application. Protests must comply with the requirements specified in section 385.2001 (5) of the Commission's regulations. A protest may also serve as a motion to intervene so long as the protestor states it also
seeks to be an intervenor.
To ensure that your comments or protests are timely and properly recorded, please submit your comments on or before 5:00 p.m.
Eastern Time on April 28, 2026.
There are three methods you can use to submit your comments or protests to the Commission. In all instances, please reference
the Project docket number CP24-13-000 in your submission.
(1) You may file your comments electronically by using the eComment feature, which is located on the Commission's website
at www.ferc.gov under the link to Documents and Filings. Using eComment is an easy method for interested persons to submit brief, text-only
comments on a project;
(2) You may file your comments or protests electronically by using the eFiling feature, which is located on the Commission's
website (www.ferc.gov) under the link to Documents and Filings. With eFiling, you can provide comments in a variety of formats by attaching them
as a file with your submission. New eFiling users must first create an account by clicking on “eRegister.” You will be asked
to select the type of filing you are making; first select “General” and then select “Comment on a Filing”; or
(3) You can file a paper copy of your comments or protests by mailing them to the following address below. Your written comments
must reference the Project docket number (CP24-13-000).
To file via USPS: Debbie-Anne A. Reese, Secretary, Federal Energy Regulatory Commission, 888 First Street NE, Washington, DC 20426.
To file via any other courier: Debbie-Anne A. Reese, Secretary, Federal Energy Regulatory Commission, 12225 Wilkins Avenue, Rockville, Maryland 20852.
The Commission encourages electronic filing of comments (options 1 and 2 above) and has eFiling staff available to assist
you at (202) 502-8258 or FercOnlineSupport@ferc.gov.
The Commission considers all comments received about the project in determining the appropriate action to be taken. However,
the filing of a comment alone will not serve to make the filer a party to the proceeding. To become a party, you must intervene
in the proceeding. For instructions on how to intervene, see below.
Interventions
Any person, which includes individuals, organizations, businesses, municipalities, and other entities, (6) has the option to file a motion to intervene in this proceeding. Only intervenors have the right to request rehearing of Commission
orders issued in this proceeding and to subsequently challenge the Commission's orders in the U.S. Circuit Courts of Appeal.
To intervene, you must submit a motion to intervene to the Commission in accordance with Rule 214 of the Commission's Rules
of Practice and Procedure (7) and the regulations under the NGA (8) by the intervention deadline for the project, which is 5:00 p.m. Eastern Time on April 28, 2026. As described further in Rule
214, your motion to intervene must state, to the extent known, your position regarding the proceeding, as well as your interest
in the proceeding. For an individual, this could include your status as a landowner, ratepayer, resident of an impacted community,
or recreationist. You do not need to have property directly impacted by the project in order to intervene. For more information
about motions to intervene, refer to the FERC website at https://www.ferc.gov/resources/guides/how-to/intervene.asp.
There are two ways to submit your motion to intervene. In both instances, please reference the Project docket number CP24-13-000
in your submission.
(1) You may file your motion to intervene by using the Commission's eFiling feature, which is located on the Commission's
website (www.ferc.gov) under the link to Documents and Filings. New eFiling users must first create an account by clicking on “eRegister.” You
will be asked to select the type of filing you are making; first select “General” and then select “Intervention.” The eFiling
feature includes a document-less intervention option; for more information, visit https://www.ferc.gov/docs-filing/efiling/document-less-intervention.pdf.; or
(2) You can file a paper copy of your motion to intervene, along with three
copies, by mailing the documents to the address below. Your motion to intervene must reference the Project docket number CP24-13-000.
To file via USPS: Debbie-Anne A. Reese, Secretary, Federal Energy Regulatory Commission, 888 First Street NE, Washington, DC 20426.
To file via any other courier: Debbie-Anne A. Reese, Secretary, Federal Energy Regulatory Commission, 12225 Wilkins Avenue, Rockville, Maryland 20852.
The Commission encourages electronic filing of motions to intervene (option 1 above) and has eFiling staff available to assist
you at (202) 502-8258 or FercOnlineSupport@ferc.gov.
Protests and motions to intervene must be served on the applicant either by mail at: Nicole M. Turpen, Senior Counsel, MountainWest
Overthrust Pipeline, LLC, P.O. Box 1396, Houston, Texas 77251-1396, or by email (with a link to the document) at nicole.turpen@williams.com..
Any subsequent submissions by an intervenor must be served on the applicant and all other parties to the proceeding. Contact
information for parties can be downloaded from the service list at the eService link on FERC Online. Service can be via email
with a link to the document.
All timely, unopposed (9) motions to intervene are automatically granted by operation of Rule 214(c)(1). (10) Motions to intervene that are filed after the intervention deadline are untimely, and may be denied. Any late-filed motion
to intervene must show good cause for being late and must explain why the time limitation should be waived and provide justification
by reference to factors set forth in Rule 214(d) of the Commission's Rules and Regulations. (11) A person obtaining party status will be placed on the service list maintained by the Secretary of the Commission and will
receive copies (paper or electronic) of all documents filed by the applicant and by all other parties.
Tracking the Proceeding
Throughout the proceeding, additional information about the project will be available from OPP at (202) 502-6595 or on the
FERC website at www.ferc.gov using the “eLibrary” link as described above. The eLibrary link also provides access to the texts of all formal documents
issued by the Commission, such as orders, notices, and rulemakings.
In addition, the Commission offers a free service called eSubscription which allows you to keep track of all formal issuances
and submittals in specific dockets. This can reduce the amount of time you spend researching proceedings by automatically
providing you with notification of these filings, document summaries, and direct links to the documents. For more information
and to register, go to www.ferc.gov/docs-filing/esubscription.asp.
Intervention Deadline: 5:00 p.m. Eastern Time on April 28, 2026.
(Authority: 18 CFR 2.1)
Dated: April 7, 2026. Debbie-Anne A. Reese, Secretary. [FR Doc. 2026-07123 Filed 4-10-26; 8:45 am] BILLING CODE 6717-01-P
Footnotes
(1) MountainWest Overthrust Pipeline, LLC, 189 FERC ¶ 61,046 (2024) (Certificate Order).
(2) 18 CFR 157.10(a)(4).
(3) 18 CFR 385.211.
(4) Persons include individuals, organizations, businesses, municipalities, and other entities. 18 CFR 385.102(d).
(5) 18 CFR 385.2001.
(6) 18 CFR 385.102(d).
(7) 18 CFR 385.214.
(8) 18 CFR 157.10.
(9) The applicant has 15 days from the submittal of a motion to intervene to file a written objection to the intervention.
(10) 18 CFR 385.214(c)(1).
(11) 18 CFR 385.214(b)(3) and (d).
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