Hueco Pipeline WatchEspañol
3D view of the proposed pipeline route over lidar terrain, from milepost 172 to 177. The line runs west, turns north 0.02 mile from Hueco Tanks State Park's southwest corner, then heads northwest. A yellow band shows the 150-ft construction right-of-way.

Desert Southwest Expansion · FERC PF26-9-000 · El Paso & Hudspeth counties

A 48-inch gas line through the Hueco Valley.

Energy Transfer's Transwestern Pipeline plans a new 48-inch natural gas pipeline from the Permian Basin to Arizona. Its own draft filing routes it 0.02 mile from Hueco Tanks State Park. The company says it will file its federal application by Nov. 30, 2026. After that, only people who formally intervene can challenge the decision.

The pipeline

What Transwestern is proposing

48″Mainline diameter. About 525 miles from Loving County, TX, to the Phoenix area (FERC scoping notice).
150 ftConstruction right-of-way width for the mainline (FERC scoping notice).
29.7 miOf mainline in El Paso County, about 14 of them on private land (draft Resource Report 8).
0.02 miDistance from the pipeline to Hueco Tanks State Park & Historic Site, at milepost 173.6 (draft RR 8).
2.3 Bcf/dNatural gas it would carry each day, delivered to customers in New Mexico and Arizona (project site).

Where it stands (from FERC filings)

  1. Apr 3, 2026FERC approves pre-filing (letter)
  2. Jul 9, 2026FERC scoping notice published (Federal Register)
  3. Aug 5, 2026Scoping comments closed; no session was held in Texas
  4. Sept 2026Draft environmental reports filed; FERC staff commenting
  5. By Nov 30, 2026Certificate application expected; intervention window opens
  6. 2027–28Environmental review, then a FERC decision
Transwestern's route map for West Texas: the proposed mainline runs west from Hudspeth County along US 62/180, north of Homestead Meadows South, and crosses into New Mexico near milepost 200.
Detail of Transwestern's route map book, “Issued for Draft FERC Filing,” Aug. 18, 2026. Full map (PDF).

The route

Along US 62/180, past Hueco Tanks

In Texas the line runs west through Hudspeth County, then crosses El Paso County north of Homestead Meadows and enters New Mexico near milepost 200. The numbers below come from the company's own draft land-use report.

Hueco Tanks
“0.02 mile from MP 173.6.” The company says it moved off the existing El Paso Natural Gas corridor to avoid the Park's boundary and the Ysleta del Sur Pueblo trust lands next to it, and says it expects no direct effects on the Park (draft RR 8).
Homes
One residence in Texas within 50 ft of the construction area, at milepost 174.48. It is 36 ft from the pipe (draft RR 8, Table 8.3-8).
Roads crossed
Hueco Tanks Rd, Curley Ave, Hueco Mountain Rd, Woodrow Rd, Quinn Ave, Old Butterfield Trl, Spilsbury Rd, Overland Stage Rd, Soto Dr and Adeline Ave, all between mileposts 172.9 and 175.4. Most paved roads would be bored; the dirt roads and Overland Stage Rd would be open-cut (draft RR 8).
Land
Of 29.74 El Paso County miles: 15.69 on military land, 0.07 state and 13.98 private, which includes 1.29 miles owned by the Ysleta del Sur Pueblo (draft RR 8).
Water
FERC staff asked the company to check for conflict with a planned El Paso Water importation pipeline in Hudspeth County (Oct. 20 staff comments).

Neighbors

In their own words

Shared with permission. Each account is the person’s own.

“I allowed them access to my property for surveys only if they agreed to send me the survey results, including the one looking for archeological artifacts. I never got results from any of the surveys they conducted, even after following up on my request.”

“They had a public input session but they sent the notices via snail mail, so I didn’t get it in time to comment. I’m assuming that to be the same for others as well.”

Ellen AlgerLandowner, Hueco Valley

What to do

Get on the record before the application

The scoping deadline has passed, but the record is still open. Comments filed now go into the docket the company and FERC staff are working from. What matters most is the step after: intervening once the application is filed.

  1. Follow the docket

    Sign up with FERC's free eSubscription for docket PF26-9-000. You'll get an email for every filing, including the notice of application that sets the intervention deadline.

    eSubscription ↗
  2. File a comment now

    Use FERC eComment (name and email only) and cite PF26-9-000. Say who you are, where your land is relative to the route, and what you want studied. Comments filed after Aug. 5 still go into the public docket, though FERC hasn't promised how it will weigh them.

    FERC eComment ↗
  3. Get ready to intervene

    Only intervenors can ask for rehearing and take FERC to court (Natural Gas Act §19). Interventions open when FERC notices the application; the notice sets the deadline. Create a FERC eRegistration account now so you can eFile then.

    eRegistration ↗
  4. Ask FERC for help

    FERC's Office of Public Participation helps landowners take part: (202) 502-6595, OPP@ferc.gov. Problems with the company go to the Landowner Helpline: 1-877-337-2237, LandownerHelp@ferc.gov.

    Office of Public Participation ↗

Your land

Surveys, notices and easements

If the line crosses or comes near your property, here is what the rules say. This is general information, not legal advice.

Survey access
Before FERC issues a certificate, “State or local trespass laws prevail” (FERC landowner pamphlet). Texas law gives some pipeline companies survey rights, so talk to a lawyer before refusing. If you sign a right-of-entry agreement, get its conditions in writing.
Survey results
FERC has companies file cultural-resource material that shows site locations as non-public, privileged information (FERC staff letter, Oct. 20). Don't count on seeing site-level results. If the company promised you its results, keep that promise in writing and raise it in a comment.
Mailed notice
After the application, the company must mail notice within 3 business days to “affected landowners”: land crossed or used, land beside the right-of-way, homes within 50 ft of the work area, and land within ½ mile of a compressor station (18 CFR 157.6(d)). The notice includes the intervention deadline. If you're near the line and don't get one, check the docket yourself.
Eminent domain
If FERC grants a certificate, the company can condemn easements in federal or state court (NGA §7(h)). A judge sets compensation under state law. FERC itself doesn't oversee condemnation.

FAQ

Common questions

Who decides?

The Federal Energy Regulatory Commission (FERC). Interstate gas lines are federal, so the Texas PUC doesn't decide this one. The Railroad Commission's pipeline safety role covers intrastate lines.

I missed the scoping meetings. Is it too late?

No. The closest session was in Chaparral, NM, and there was none in Texas. Comments are still being filed, and there will be more chances to comment: on the application and on the draft environmental review.

Will there be an Environmental Impact Statement?

FERC hasn't decided. Its notice says staff will choose between an EA and an EIS after the application is filed (scoping notice).

What is intervening, and is it hard?

It makes you a party to the case. You file a short motion through eFiling saying who you are and how the project affects you (18 CFR 385.214). It must be filed by the deadline in FERC's notice of application. Late interventions need “good cause.”

Who runs this site?

Hueco Valley neighbors. We aren't lawyers and aren't affiliated with Energy Transfer, Transwestern or FERC. Every fact links to its source; tell us if one is wrong.