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FERC Staff Protests Transwestern Pipeline Blanket Certificate Activity

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Summary

FERC staff filed a protest on April 13, 2026 against Transwestern Pipeline Company's blanket certificate filing for the Green Chile Project in Doña Ana County, New Mexico. The protest cites missing documentation required under the National Historic Preservation Act, specifically a finding by the New Mexico State Historic Preservation Office. Unless the protest is withdrawn within 30 days, the filing will be treated as a full case-specific application under NGA Section 7.

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What changed

FERC staff filed a protest on April 13, 2026 against Transwestern Pipeline Company's blanket certificate filing for the Green Chile Project. The protest was filed under Part 157, subpart F of FERC's regulations. FERC staff cited Transwestern's failure to provide documentation from the New Mexico State Historic Preservation Office demonstrating compliance with the National Historic Preservation Act.

Under FERC's regulations, a protested prior notice filing is treated as a case-specific application under NGA Section 7 unless the protest is withdrawn within 30 days. This means the Green Chile Project will face a more rigorous and time-consuming review process. Transwestern must now either provide the required historic preservation documentation or risk having the project subjected to full case-specific review, which could delay or prevent approval.

Archived snapshot

Apr 17, 2026

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Content

Federal Energy Regulatory Commission (FERC or Commission) staff (Protestor) hereby protests the prior notice request filed
under the provisions of the Commission's regulations at Part 157, subpart F, by Transwestern Pipeline Company, LLC (Transwestern)
on January 29, 2026, in the above-referenced docket. Pursuant to its Part 157, subpart F, blanket certificate authority, Transwestern
proposes to construct and operate approximately a 17.77-mile-long, 24-inch-diameter, natural gas transmission pipeline lateral,
two metering facilities, and appurtenances for the Green Chile Project (Project), in Doña Ana County, New Mexico. Section
157.205(f) provides that a protested prior notice filing shall be treated as though it had filed a case-specific application
under NGA section 7, unless, pursuant to section 157.205(g), the protestor withdraws its protest within 30 days after protests
were due.

Protestor notes that Transwestern did not provide a copy of a finding by the New Mexico State Historic Preservation Office
of “no historic properties” or “no historic properties affected.” This documentation is necessary to demonstrate the Project's
compliance with the National Historic Preservation Act, as required under the Commission's regulations at sections 157.206(b)(3)(ii)
and 157.208(c)(9) and Appendix II of subpart F. Without this documentation, the environmental concerns cannot be adequately
addressed before the protest period expires on April 13, 2026.

Authority: 18 CFR 2.1.

Dated: April 13, 2026. Debbie-Anne A. Reese, Secretary. [FR Doc. 2026-07448 Filed 4-15-26; 8:45 am] BILLING CODE 6717-01-P

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CFR references

18 CFR 2.1 18 CFR Part 157, Subpart F 18 CFR 157.206(b)(3)(ii) 18 CFR 157.208(c)(9)

Named provisions

Part 157, Subpart F Section 7 of the Natural Gas Act Section 157.205

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Last updated

Classification

Agency
FERC
Published
April 13th, 2026
Instrument
Notice
Legal weight
Non-binding
Stage
Final
Change scope
Substantive
Document ID
FR Doc. 2026-07448
Docket
FERC-2026-2182-0001

Who this affects

Applies to
Energy companies
Industry sector
2111 Oil & Gas Extraction
Activity scope
Pipeline certificate protests Environmental compliance reviews Natural gas transmission infrastructure
Geographic scope
United States US

Taxonomy

Primary area
Energy
Operational domain
Regulatory Affairs
Topics
Environmental Protection

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