Notice2026-18148
MountainWest Overthrust Pipeline, LLC; Notice of Scoping Period Requesting Comments on Environmental Issues for the Proposed Green River West Expansion Project
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Published
September 4, 2026
Issuing agencies
Energy DepartmentFederal Energy Regulatory Commission
Full Text
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<title>Federal Register, Volume 91 Issue 171 (Friday, September 4, 2026)</title>
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[Federal Register Volume 91, Number 171 (Friday, September 4, 2026)]
[Notices]
[Pages 56877-56879]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2026-18148]
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DEPARTMENT OF ENERGY
Federal Energy Regulatory Commission
[Docket No. CP26-550-000]
MountainWest Overthrust Pipeline, LLC; Notice of Scoping Period
Requesting Comments on Environmental Issues for the Proposed Green
River West Expansion Project
The staff of the Federal Energy Regulatory Commission (FERC or
Commission) will prepare an environmental document that will discuss
the environmental effects of the Green River West Expansion Project
involving construction and operation of facilities by MountainWest
Overthrust Pipeline, LLC (Overthrust) in Sweetwater County, Wyoming.
The Commission will use this environmental document in its decision-
making process to determine whether the project is in the public
convenience and necessity.
This notice announces the opening of the scoping process the
Commission will use to gather input from the public and interested
agencies regarding the project. As part of the National Environmental
Policy Act (NEPA) review process, the Commission takes into account
concerns the public may have about proposals and the environmental
effects that could result from its action whenever it considers the
issuance of a Certificate of Public Convenience and Necessity. This
gathering of public input is referred to as ``scoping.'' The main goal
of the scoping process is to focus the analysis in the environmental
document on the important environmental issues. Additional information
about the Commission's NEPA process is described below in the NEPA
Process and Environmental Document section of this notice.
By this notice, the Commission requests public comments on the
scope of issues to address in the environmental document. To ensure
that your comments are timely and properly recorded, please submit your
comments so that the Commission receives them in Washington, DC on or
before 5:00 p.m. Eastern Time on October 1, 2026. Comments may be
submitted in written form. Further details on how to submit comments
are provided in the Public Participation section of this notice.
Your comments should focus on the potential environmental effects,
reasonable alternatives, and measures to avoid or lessen environmental
effects. Your input will help the Commission staff determine what
issues they need to evaluate in the environmental document. Commission
staff will consider all written comments during the preparation of the
environmental document.
If you submitted comments on this project to the Commission before
the opening of this docket on July 1, 2026, you will need to file those
comments in Docket No. CP26-550-000 to ensure they are considered as
part of this proceeding.
This notice is being sent to the Commission's current environmental
mailing list for this project. State and local government
representatives should notify their constituents of this proposed
project and encourage them to comment on their areas of concern.
If you are a landowner receiving this notice, a pipeline company
representative may contact you about the acquisition of an easement to
construct, operate, and maintain the proposed facilities. The company
would seek to negotiate a mutually acceptable easement agreement. You
are not required to enter into an agreement. However, if the Commission
approves the project, the Natural Gas Act conveys the right of eminent
domain to the company. Therefore, if you and the company do not reach
an easement agreement, the pipeline company could initiate condemnation
proceedings in court. In such instances, compensation would be
determined by a judge in accordance with state law. The Commission does
not subsequently grant, exercise, or oversee the exercise of that
eminent domain authority. The courts have exclusive authority to handle
eminent domain cases; the Commission has no jurisdiction over these
matters.
Overthrust provided landowners with a fact sheet prepared by the
FERC entitled ``An Interstate Natural Gas Facility On My Land? What Do
I Need To Know?'' which addresses typically asked questions, including
the use of eminent domain and how to participate in the Commission's
proceedings. This fact sheet along with other landowner topics of
interest are available for viewing on the FERC website (<a href="http://www.ferc.gov">www.ferc.gov</a>)
under the Natural Gas, Landowner Topics link.
Public Participation
There are three methods you can use to submit your comments to the
Commission. Please carefully follow these instructions so that your
comments are properly recorded. The Commission encourages electronic
filing of comments and has staff available to assist you at (866) 208-
3676 or <a href="/cdn-cgi/l/email-protection#c284a7b0a18dacaeabaca791b7b2b2adb0b682a4a7b0a1eca5adb4"><span class="__cf_email__" data-cfemail="edab889f8ea28381848388be989d9d829f99ad8b889f8ec38a829b">[email protected]</span></a>.
(1) You can file your comments electronically using the eComment
feature, which is located on the Commission's website (<a href="http://www.ferc.gov">www.ferc.gov</a>)
under the link to FERC Online. Using eComment is an easy method for
submitting brief, text-only comments on a project;
(2) You can file your comments electronically by using the eFiling
feature, which is also on the Commission's website (<a href="http://www.ferc.gov">www.ferc.gov</a>) under
the link to FERC Online. 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; a comment on a particular project is considered a ``Comment on
a Filing''; or
(3) You can file a paper copy of your comments by mailing them to
the Commission. Be sure to reference the project docket number (CP26-
550-000) on your letter. Submissions sent via the U.S. Postal Service
must be addressed to: Debbie-Anne A. Reese, Secretary, Federal Energy
Regulatory Commission, 888 First Street NE, Room 1A, Washington, DC
20426. Submissions sent via any other carrier must be addressed to:
Debbie-Anne A. Reese, Secretary, Federal Energy Regulatory Commission,
12225 Wilkins Avenue, Rockville, MD 20852.
Additionally, the Commission offers a free service called
eSubscription which makes it easy to stay informed of all issuances and
submittals regarding the dockets/projects to which you subscribe. These
instant email notifications are the fastest way to receive notification
and provide a link to the document files which can reduce the amount of
time you spend researching proceedings. Go to <a href="https://www.ferc.gov/ferc-online/overview">https://www.ferc.gov/ferc-online/overview</a> to register for eSubscription.
For public inquiries and assistance with making filings such as
interventions, comments, or requests for rehearing, contact the Office
of Public Participation at (202)502-6595 or <a href="/cdn-cgi/l/email-protection#a0eff0f0e0c6c5d2c38ec7cfd6"><span class="__cf_email__" data-cfemail="3c736c6c7c5a594e5f125b534a">[email protected]</span></a>.
[[Page 56878]]
Summary of the Proposed Project
Overthrust states its Green River West Expansion Project would
allow the delivery of up to 64,000 dekatherms per day of firm natural
gas transportation service from receipt points near Opal, Wyoming, to
the new WE Soda delivery meter station. Overthrust asserts the
incremental gas made available by the project would be used primarily
to replace coal currently used in boilers and may also be used to
supplement existing natural gas-powered calcining operations.
The Green River West Expansion Project would consist of the
following facilities, all of which would be in Sweetwater County,
Wyoming:
<bullet> two new 12-inch delivery taps, one on Overthrust's
existing mainline 116 and one on its existing mainline 133, to provide
WE Soda with a dual feed option \1\;
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\1\ A delivery tap is a connection point on a large natural gas
pipeline that allows gas to be safely transferred to another
pipeline or facility.
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<bullet> a 12-inch diameter jurisdictional tap line (JTL150) that
would extend 6.78 miles north from the new taps to the Westvaco Plant;
and
<bullet> a new Metering and Regulating Station,\2\ including
appurtenances, called the JTL150 Meter Station, being constructed by
Overthrust at the existing Westvaco Plant site.
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\2\ A metering and regulating station is a facility that
measures how much gas is delivered and controls its pressure to
ensure safe and steady flow.
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The general location of the project facilities is shown in appendix
1.\3\
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\3\ The appendices referenced in this notice will not appear in
the Federal Register. Copies of the appendices were sent to all
those receiving this notice in the mail and are available at
<a href="http://www.ferc.gov">www.ferc.gov</a> using the link called ``eLibrary.'' For instructions on
connecting to eLibrary, refer to the last page of this notice. For
assistance, contact FERC at <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="43050611000c2d2f2a2d26103633332c313703252631206d242c35">[email protected]</a> or call toll
free, (886) 208-3676 or TTY (202) 502-8659.
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Land Requirements for Construction
Construction of the proposed facilities would disturb about 114
acres of land for the aboveground facilities and the pipeline.
Following construction, Overthrust would maintain about 44 acres for
permanent operation of the project's facilities; the remaining acreage
would be restored and revert to former uses.
NEPA Process and the Environmental Document
Any environmental document issued by the Commission will discuss
effects that could occur as a result of the construction and operation
of the proposed project under the relevant general resource areas:
<bullet> geology and soils;
<bullet> water resources and wetlands;
<bullet> vegetation and wildlife;
<bullet> threatened and endangered species;
<bullet> cultural resources;
<bullet> land use;
<bullet> air quality and noise; and
<bullet> reliability and safety.
Commission staff will also evaluate reasonable alternatives to the
proposed project or portions of the project and make recommendations on
how to lessen or avoid effects on the various resource areas. Your
comments will help Commission staff identify and focus on the issues
that might have an effect on the human environment and potentially
eliminate others from further study and discussion in the environmental
document.
Following this scoping period, Commission staff will determine
whether to prepare an Environmental Assessment (EA) or an Environmental
Impact Statement (EIS). The EA or the EIS will present Commission
staff's independent analysis of the issues. If Commission staff
prepares an EA, a Notice of Schedule for the Preparation of an
Environmental Assessment will be issued. The EA may be issued for an
allotted public comment period. The Commission would consider timely
comments on the EA before making its decision regarding the proposed
project. If Commission staff prepares an EIS, a Notice of Intent to
Prepare an EIS/Notice of Schedule will be issued, which will open up an
additional comment period. Staff will then prepare a draft EIS which
will be issued for public comment. Commission staff will consider all
timely comments received during the comment period on the draft EIS and
revise the document, as necessary, before issuing a final EIS. Any EA
or draft and final EIS will be available in electronic format in the
public record through eLibrary \4\ and the Commission's natural gas
environmental documents web page (<a href="https://www.ferc.gov/industries-data/natural-gas/environment/environmental-documents">https://www.ferc.gov/industries-data/natural-gas/environment/environmental-documents</a>). If eSubscribed, you
will receive instant email notification when the environmental document
is issued.
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\4\ For instructions on connecting to eLibrary, refer to the
last page of this notice.
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With this notice, the Commission is asking agencies with
jurisdiction by law and/or special expertise with respect to the
environmental issues of this project to formally cooperate in the
preparation of the environmental document.\5\ Agencies that would like
to request cooperating agency status should follow the instructions for
filing comments provided under the Public Participation section of this
notice.
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\5\ Cooperating agency responsibilities are addressed in Section
107(a)(3) of NEPA (42 U.S.C. 4336(a)(3)).
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Consultation Under Section 106 of the National Historic Preservation
Act
In accordance with the Advisory Council on Historic Preservation's
implementing regulations for section 106 of the National Historic
Preservation Act, the Commission is using this notice to initiate
consultation with the applicable State Historic Preservation Office,
and to solicit their views and those of other government agencies,
interested Indian tribes, and the public on the project's potential
effects on historic properties.\6\ The environmental document for this
project will document findings on the impacts on historic properties
and summarize the status of consultations under section 106.
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\6\ The Advisory Council on Historic Preservation's regulations
are at Title 36, Code of Federal Regulations, Part 800. Those
regulations define historic properties as any prehistoric or
historic district, site, building, structure, or object included in
or eligible for inclusion in the National Register of Historic
Places.
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Environmental Mailing List
The environmental mailing list includes: federal, state, and local
government representatives and agencies; elected officials; Native
American Tribes; environmental and public interest groups; other
interested parties; and local libraries and media outlets. This list
also includes all affected landowners (as defined in the Commission's
regulations) who are potential right-of-way grantors, whose property
may be used temporarily for project purposes, or who own homes within
certain distances of aboveground facilities, and anyone who submits
comments on the project and includes a mailing address with their
comments. Commission staff will update the environmental mailing list
as the analysis proceeds to ensure that Commission notices related to
this environmental review are sent to all individuals, organizations,
and government entities interested in and/or potentially affected by
the proposed project.
If you need to make changes to your name/address, or if you would
like to remove your name from the mailing list, please complete one of
the following steps:
(1) Send an email to <a href="/cdn-cgi/l/email-protection#a3e4c2d0f3d1ccc9c6c0d7e2c7c7d1c6d0d0e0cbc2cdc4c6e3c5c6d1c08dc4ccd5"><span class="__cf_email__" data-cfemail="edaa8c9ebd9f8287888e99ac89899f889e9eae858c838a88ad8b889f8ec38a829b">[email protected]</span></a> stating your
request. You must include the docket number CP26-550-000 in your
request. If you are requesting a
[[Page 56879]]
change to your address, please be sure to include your name and the
correct address. If you are requesting to delete your address from the
mailing list, please include your name and address as it appeared on
this notice. This email address is unable to accept comments.
OR
(2) Return the attached ``Mailing List Update Form'' (appendix 2).
Additional Information
Additional information about the project is available from the FERC
website at <a href="http://www.ferc.gov">www.ferc.gov</a> using the eLibrary link. Click on the eLibrary
link, click on ``General Search'' and enter the docket number in the
``Docket Number'' field. Be sure you have selected an appropriate date
range. For assistance, please contact FERC Online Support at
<a href="/cdn-cgi/l/email-protection#f6b0938495b9989a9f9893a5838686998482b690938495d8919980"><span class="__cf_email__" data-cfemail="7a3c1f081935141613141f290f0a0a15080e3a1c1f0819541d150c">[email protected]</span></a> or (866) 208-3676, or for TTY, contact (202)
502-8659. The eLibrary link also provides access to the texts of all
formal documents issued by the Commission, such as orders, notices, and
rulemakings.
Public sessions or site visits will be posted on the Commission's
calendar located at <a href="https://www.ferc.gov/news-events/events">https://www.ferc.gov/news-events/events</a> along with
other related information.
(Authority: 18 CFR 2.1)
Dated: September 1, 2026.
Carlos D. Clay,
Deputy Secretary.
[FR Doc. 2026-18148 Filed 9-3-26; 8:45 am]
BILLING CODE 6717-01-P
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