Line D9 Pipeline Project | Atmos Energy

Line D9 Pipeline Project

Line D9 Replacement Project Overview

Line D9 is part of the pipeline system delivering natural gas to the neighborhoods designated in the map below.  We have been replacing aging underground pipelines as part of our continuing effort to enhance the safety and reliability of our natural gas pipeline system.

Starting in January 2018, we will be in your neighborhood replacing the high-pressure natural gas pipeline, designated by Atmos Energy as Line D9. This will enable us to continue safely serving the growing number of new homes and businesses in your neighborhood and the greater DFW area for generations to come.

Latest Update 

Week of May 14th, 2018

Construction Update

Atmos Energy has selected Watkins Construction as the contractor for the D9 Replacement Project. Watkins Construction will begin construction on Monday, May 14th and will have crews working in the following areas this week:

  • Continue to locate foreign utilities using the hydro vacuum truck
  • Begin work from for the bore from FM 544 to King Arthur
  • Begin stringing pipe and welding for the bore from Rosemeade Parkway to Elizabeth Street
  • Begin stringing pipe and welding for the bore from Branch Hollow Drive to the HOA green space.
  • Begin the stringing pipe and open cut on Cromwell from Barclay to Chesterfield.
  • Begin stringing pipe and the open cut in the Rosemeade Recreation Center.

Neighborhood Logistics

Atmos Energy has placed door tags on front doors concerning updates around neighborhood logistics in the following areas:

  • 3100 Block of Afton
  • Wallingford Ln & King Arthur Blvd.
  • Alley between Derby Run and Kimberly Dr.

The information contained on these door tags pertains to logistics around trash pick and mail pickup locations and specific instructions have been included on the individual door tags.


As a reminder, Atmos Energy will be restoring items within the 50 ft easement (for example, sprinkler systems, grass, etc.) following the completion of construction. If there is something unique that you would like Atmos Energy to be aware of or if you experience damage outside of the 50 ft easement as a result of this project, please follow the damage claim process at here.

Other Updates

As part of this project, Atmos Energy will be removing portions of the abandoned pipeline to facilitate the new construction. Although the abandoned pipeline will no longer have gas in it, it is possible that the smell used in odorizing natural gas may linger in the abandoned pipeline. During the removal process, this smell may be released to atmosphere.

If you smell gas please leave the area immediately and call 911 and Atmos Energy's 24/7 emergency number 866-322-8667.

May 2, 2018

Atmos Energy to Flare Natural Gas in Carrollton

CARROLLTON, Texas (May 2, 2018) - Atmos Energy crews and contractors will oversee a controlled natural gas flaring on May 11th from approximately 7 a..m. to 10 p.m. at the southwest corner of Old Denton Rd and Frankford Rd. The company will be replacing a section of natural gas pipeline in the area.

“Flaring” is a standard industry practice to safely burn natural gas that must be removed from a specific section of pipeline so employees can work on the pipe. People in the area will notice a large, controlled flame and moderate noise during this process. Atmos Energy employees will be on site to monitor the process as natural gas is vented into the atmosphere.

Carrollton City Staff, Fire Department and Police Department are being advised of the flaring prior to the work beginning May 11th.

For an informational video explaining why Atmos Energy performs flaring operations click, here.

PDF icon City of Carrolton Flaring Press Release - 5/11/18

April 6, 2018 

Atmos Energy has completed the pre-construction activities for the Line D9 Replacement Project. Due to the substantial rain over the month of February and into March, the original Pipeline Construction start has been delayed until the middle to end of April. The pipeline Construction completion is still anticipated for November 2018. We will update this website once the start date has been finalized with the contractor.

Over the course of this project, Atmos Energy will utilize this website to update residents on the status of construction and neighborhood logistics as well as any other updates regarding this project. 

Who is Atmos Energy? 

If you have natural gas service in your home, it is very likely that Atmos Energy is your natural gas provider.  Atmos Energy is headquartered in Dallas, and traces its roots in this area back to the early 1900’s as Lone Star Gas.  Today Atmos Energy serves over three million natural gas distribution customers in eight states from the Blue Ridge Mountains in the East to the Rocky Mountains in the West. Atmos Energy also manages one of the largest intrastate natural gas pipeline systems in Texas.

I thought natural gas pipelines were only located in streets and alleys.  How is this pipeline different? 

Pipelines that deliver gas to residences and businesses within city limits are most often smaller diameter “distribution” lines, and these are usually located under streets and alleys.  However, there are also larger diameter “transmission” lines that typically operate at higher pressures and are located in private easements.  This particular pipeline is a transmission line located within a private easement. 

Why is this pipeline being replaced? 

As with all infrastructure, pipeline infrastructure must be replaced from time to time to ensure its safety and to support the growth in the DFW area.  The replacement of this pipeline, originally constructed in 1955, will ensure continued safe and reliable service to our customers.


When will the project begin and how long will it last? 

Engineering is already underway, and detailed survey as well as subsurface utility studies along the right-of-way began in early January 2017.  Right–of-way preparation and preconstruction activities will begin in January 2018, with actual construction beginning in approximately March 2018.  Physical construction is expected to take approximately nine months.  As with all construction projects of this size, it is possible that these dates will change - we will do our best to keep you posted if this occurs.  Also, please note that because of our construction sequencing, some areas along the pipeline will see construction begin sooner than others.

How will my property be affected?

The answer depends on several factors, including the location of your property in relation to the pipeline and the location of any obstacles/encroachments within the right-of-way.  Once the detailed survey and engineering work is complete, affected property owners will be contacted to discuss the impact on their individual properties and any impact on adjacent streets and alleys.  However, you should be aware that along a significant portion of this pipeline replacement project, there will be excavation within the right-of-way.  This will require that all obstacles/encroachments within the right-of-way be removed, at least for the duration of construction.  We will work with individual landowners to determine how this will affect their property and what steps can be taken to minimize any impact.  

I didn’t know about this pipeline until just now - what has Atmos Energy done to make residents aware of this?

The pipeline easement is a publicly recorded document, and pipeline rights-of-way are often shown on subdivision plats.  The pipeline itself is identified by pipeline markers that show the approximate location of the pipeline.  Each pipeline marker contains information that identifies the company that operates the pipeline, the product transported, and a phone number that should be called in the event of an emergency.  Federal law requires these markers to be placed along the right-of-way and also prohibit anyone from tampering with, defacing, damaging or removing a pipeline marker.  The U.S. Department of Transportation’s Office of Pipeline Safety has developed the National Pipeline Mapping System (NPMS) to provide information about gas transmission and liquid transmission operators and their pipelines.  The NPMS web site is searchable by zip code, or by county and state, and can display a county map that is printable.  Please go to for more information.

What is the difference between an easement and a right-of-way?

The easement that affects your property is a written agreement, recorded in the public records, that grants a property right to Atmos Energy or its predecessor to allow it to construct, operate and maintain one or more pipelines across a particular property.  It is a perpetual right that “runs with the land” and is binding on current property owners, even if property was sold or conveyed from the original landowner who granted the easement.  The right-of-way is the specific area identified in the easement within which Atmos Energy can construct, operate and maintain its facilities.  In some cases rights-of-way are defined to a specific distance (for example, fifty (50) or seventy-five (75) feet wide), but can also be undefined (i.e., blanket).  A survey is usually required to see exactly how the right-of-way affects a particular property.  Rights-of-way are sometimes shown on plats with local governments, although they are not always accurate.  The easement itself will tell you the extent of the right-of-way. 

Will you need to clear trees from the pipeline right-of-way? 

Given that excavation will occur within the right-of-way, yes.  Over time, tree growth inhibits Atmos Energy's ability to access the pipeline quickly in the event of an emergency, conduct required right-of-way surveillance and leak surveys, and perform routine maintenance in accordance with required federal/state inspections. In order to perform these critical activities, pipeline maintenance personnel must be able to easily and safely access the pipeline right-of-way, as well as areas on either side of the pipeline.  Keeping trees, shrubs, buildings, fences, and other structures and encroachments well away from the pipelines promotes maintenance of pipeline integrity and safety. In addition, the root systems of many trees and large shrubs can grow against or around pipelines damaging the coating and even denting the pipeline. That type of underground damage can result in leaks and potential harm to the public.  To avoid such damage, Atmos Energy needs to remove trees from the right-of-way.

What will happen to other features such as fences, decks, carports, and landscaping that are located within the right-of-way? 

Each encroachment will be reviewed on a case-by-case basis to evaluate the impact to Atmos Energy's ability to construct this particular project, as well as its ongoing ability to operate, maintain, and repair the new pipeline in the future.  If the encroachment does not pose a risk and does not interfere with the operations, maintenance, and replacement of the pipeline, an Encroachment Agreement will be presented to each landowner. The landowner will be asked to sign the agreement, acknowledging that the encroachment can remain for the time being and ensuring Atmos Energy's right to remove the encroachment in the future, if necessary.  If the encroachment does impede and affect Atmos Energy's ability to carry out operations, maintenance and replacement of the pipeline, the landowner will be given the opportunity to have the encroachment removed.  If the encroachment is not removed in a timely manner, Atmos Energy will remove the encroachment.

How will this affect my neighborhood? 

During the physical construction phase, temporary traffic re-routes may be necessary to accommodate construction equipment.  Work will be performed under local ordinances and standards to minimize disruption.  Work in and immediately adjacent to public schools is anticipated to be performed over the summer months.  Atmos Energy is working with municipal services, such as garbage collection, to help ensure there are no disruptions to these services.

Have the City of Carrollton, the Denton County Fresh Water Supply District and Denton County officials been notified of this work? 

Yes. Both staff and elected officials have been informed about the project. Atmos Energy will be closely coordinating such work as project plans are finalized.

Are there other issues about the pipeline right-of-way that I should be aware of?

Yes. Keeping trees, shrubs, fences and buildings off of the right-of-way are essential for effective monitoring.  Even temporary buildings can inhibit inspection of the pipeline.

The following plants are allowed on Atmos Energy’s right of way. These plants have less than 4’ growth potential and a non-intrusive root system. They are also local to the North Texas climate. 

PDF iconAtmos Energy Approved Vegetation


PerennialOrnamental GrassShrub 

Autumn Salvia 

Berkeley's SedgeAgave 
Asian Jasmine


Gulf MuhlyAmerican BeautyBerry 
Creeping Juiper

Blackfoot Daisy 

Hameln's FountainBarberry 
Creeping Rosemary

Blue Mealy Sage 

Mexican FeatherCast Iron Plant 

Lirope, regular or giant 


Color Guard Yucca 

Mondo Grass 

Cone Flower 

Compact Nandina 

Purple Euonymus 

Creeping Lantana 

Drift Rose 


Dwarf Boxwood 

Dwarf Mexican Petunia 

Dwarf Chinese Holly 

Flame Acanthus 

Dwarf Indian Hawthorn 

Garden Phlox 

Dwarf Spiera 


Dwarf Variegated 

Holly Fern 

Dwarf Yaupon Holly 

Lamb’s Ear 

Flirt Nandina 

Wood Fern 

Harbor Dwarf Nandina 
Miniature Crape Myrtle 
Rose Creek Abelia 
Spreading Yew 
Variegated Abelia 
Wheeler’s Dwarf 

Atmos Energy to Replace High-Pressure Pipeline Through Castle Hills in 2018

 This letter is a follow-up to our January 2017 letter regarding the replacement of a natural gas transmission pipeline.  This pipeline is part of the pipeline system delivering natural gas to the gas utility serving your neighborhood.  We have been replacing aging underground pipelines as part of our continuing effort to enhance the safety and reliability of our natural gas pipeline system.  This pipeline, originally constructed in 1955, is located in a private easement and is well marked throughout the neighborhood.  Atmos Energy has been working with District 1-A, County and State officials to advise them of the project.

 As with all infrastructure, pipelines and related facilities must be updated periodically to assure safety and to support the growth in the DFW area.  Pipeline transportation is one of the safest and most cost-effective ways to transport natural gas. To remain safe and reliable, and to meet increasing energy demands, Atmos Energy is continually monitoring its system and upgrading facilities across its areas of operation. 

We want to ensure that these facility improvements are effectively managed to enhance safety for those living or working near them and to minimize disruption that often accompanies such projects.  For example, work through the school property will be conducted in summer to minimize traffic disruptions.


Post Engineering Communication with
Regulatory, Community, and Property Owners  

February 1, 2018 – June 2018
Resolution to Encroachment related issuesFebruary 1, 2018 – May 1, 2018
Preconstruction Activities including Right-of-Way Preparation February 1, 2018 – May 1, 2018  
Pipeline Construction Start DateApril 1, 2018 – August 31, 2018
Pipeline Construction CompletionNovember 2018 

When we get to your immediate area, some neighborhood services might be affected depending on your location. We will communicate with you directly if that may occur.

Trash Pickup
If your trash pickup is impacted, we will leave a door hanger notifying you of any changes to your regular trash pickup.

If mail delivery service is impacted, a bank of mailboxes will be installed to collect and distribute mail, pending additional instructions from the city and postal authorities.

Emergency Services
Emergency services have been notified of the construction plan.

Parking Information
Parking may be interrupted during construction to ensure the safety of workers and homeowners.

School Bus Routes
Potential changes to school bus routes will be coordinated through the school district.  

General Damage Claim Process

The process for addressing potential damage claims related to Atmos Energy’s Line D-9 replacement project is set out below.  Please note that many of the items damaged during construction inside the 50’ easement area (for example, sprinkler systems and grass) will be restored following completion of construction.  There is no need to process those damages as a “claim” because they will be addressed post-construction.  However, if there is something unique that you would like Atmos Energy to be aware of, or if you experience damage outside of the 50’ easement, then please consider that a “claim” and follow the steps set out below.  Your point of contact to initiate this process (or for questions) will be your designated ROW Agent. 

General Damage Claim Process.pdf