Pipeline Seeks Public Input on Desert Expansion
Published Date: 7/9/2026
Notice
Summary
Transwestern Pipeline Company plans to expand its pipeline in Texas, New Mexico, and Arizona, and the government wants your thoughts on how this might affect the environment. They’re asking for public comments by August 5, 2026, to help decide if the project should move forward. This is your chance to speak up about possible changes and how they might impact local communities and nature.
Analyzed Economic Effects
6 provisions identified: 3 benefits, 3 costs, 0 mixed.
Landowners: Easements and Eminent Domain Risk
If you own land near the planned route, Transwestern may contact you to negotiate an easement to build and operate the pipeline. You do not have to agree, but if the Commission approves the project the company could start court condemnation (eminent domain) proceedings and a judge would determine compensation under state law.
Large Construction Footprint Across Three States
The project would build a 48-inch mainline stretching 526.5 miles plus 181.5 miles of laterals, new compressor stations, and meter stations, using a 150-foot-wide construction right-of-way for the mainline and 75–90 feet for laterals. Construction will require temporary construction workspace and some permanent right-of-way in Texas, New Mexico, and Arizona.
Possible Environmental Effects to Local Areas
FERC will study environmental effects the project could cause, including water use and effects on aquifers, safety and emergency response, light pollution, impacts to wilderness areas and the San Pedro River Valley, threatened and endangered species and migratory birds, and cultural resources. These are the issues FERC staff explicitly identified for analysis in the environmental review.
More Natural Gas Capacity to NM and AZ
Transwestern says the expansion would provide firm transportation of up to 2.3 billion cubic feet per day (Bcf/d) of natural gas from the Permian Basin to customers in New Mexico and Arizona and would upgrade the Phoenix Lateral for bi-directional flow. The company states the project is meant to serve growing demand for gas-fired electric generation and deliveries to local distribution companies.
You Can Comment — Deadline and Scoping Sessions
The public can submit written or oral comments to FERC; comments must be received by 5:00 p.m. Eastern Time on August 5, 2026. In-person scoping sessions are scheduled July 21–30, 2026 at listed Arizona and New Mexico locations, and virtual sessions are scheduled July 30, 2026 (6:00–8:00 p.m. MDT) and August 3, 2026 (12:00–2:00 p.m. MDT).
Right to Intervene After Formal Application
Once Transwestern files a formal application, members of the public may seek intervenor status. Only intervenors are official parties who can request rehearing of FERC’s decision and be heard in court on appeals of the Commission’s final ruling.
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