Transwestern has expanded its natural gas pipeline system by constructing 25 miles of 36-inch diameter pipeline in New Mexico, 259 miles of 36-inch and 42-inch diameter pipeline in Arizona, and acquiring an interest in the East Valley Lateral.
The FERC issued authorization to Transwestern to commence service on February 20, 2009. Transwestern officially commenced service to its customers on March 1, 2009.
Project Newsletters
- 03-01-09 Phoenix Expansion Project Newsletter
- 01-01-09 Phoenix Expansion Project Newsletter
- 10-01-08 Phoenix Expansion Project Newsletter
- 08-01-08 Phoenix Expansion Project Newsletter
- 07-01-08 Phoenix Expansion Project Newsletter
- 06-01-08 Phoenix Expansion Project Newsletter
- Phoenix Expansion Project Map
- Pipeline route in Yavapai County
- Transwestern Pipeline Company System Map
Federal Energy Regulatory Commission (FERC) and Other Regulatory Agencies
Construction of interstate pipeline facilities is regulated under the Natural Gas Act, and the rules and regulations of the Federal Energy Regulatory Commission (FERC). All interstate pipeline construction projects must be approved by the FERC prior to construction. In early 2005, Transwestern met with potential customers to negotiate agreements that would support the building of a new pipeline into the Phoenix, Arizona area. Transwestern filed its construction application with the FERC on September 15, 2006, in Docket No. CP06-459-000 and received its FERC Order authorizing construction of its Phoenix Expansion Project on November 15, 2007.
In addition to the FERC regulations and construction Order issued for its Phoenix Expansion Project, Transwestern has consulted with other Federal, state, tribal, and local regulatory agencies and has received permits when applicable, including, but not limited to, from the following agencies:
- United States Department of Transportation Pipeline and Hazardous Material Safety Administration, Office of Pipeline Safety
- United States Environmental Protection Agency
- United States Army Corps of Engineers
- United States Department of Interior, The United States Fish and Wildlife Service
- United States Department of the Interior, Bureau of Land Management
- United States Department of the Interior, Bureau of Reclamation
- United States Department of the Interior, Bureau of Indian Affairs
- United States Department of Agriculture, Forest Service, Prescott National Forest
- United States Department of Agriculture, Forest Service, Kaibab National Forest
- Navajo Nation
- Arizona State Land Department
- Arizona Game and Fish Department
- Arizona State Historical Preservation Office
- Arizona Department of Environmental Quality
- Arizona Department of Water Resources
- New Mexico Department of Cultural Affairs
- New Mexico Department of Game and Fish
- New Mexico State Lands Office
Provided below is a link to the FERC web site that provides a diagram of the regulatory process that Transwestern followed to obtain a FERC certificate that authorizes the construction of the Phoenix Expansion Project.
All documents filed with the FERC for Transwestern’s Phoenix Expansion Project under the proceeding Docket No. CP06-459 are included in the public record. These filings are available for review at the FERC in the Public Reference Room or may be viewed on the Commission's website at http://www.ferc.gov using the "eLibrary" link. Enter the docket number excluding the last three digits in the docket number field to access the document. For assistance, please contact FERC Online Support at FERCOnlineSupport@ferc.gov or toll free at (866)208-3676, or for TTY, contact (202) 502-8659.
Living Safely with Natural Gas Pipelines- Landowner and Community Information
- Landowner and Community Information (picture version)
- Emergency Responder Information
- Excavator Information
- Call Before You Dig - It's the Law, State One-Call phone numbers
About Transwestern Pipeline Company
- Transwestern transports gas drawn from the San Juan, Anadarko, and Permian Basins to markets in the Midwest, Texas, Arizona, New Mexico, Nevada, and California via approximately 2,500 miles of pipeline.
- Transwestern’s pipeline system has bi-directional flow capabilities that provides flexibility to rapidly adapt to regional demand
- Transwestern’s mainline capacity flowing west is 1,225 MMcf/day; San Juan Lateral capacity is 1,610 MMcf/day/day
- Transwestern’s system has access to Rocky Mountain production via its San Juan Lateral interconnections with TransColorado and Northwest Pipeline
- Customers include local distribution companies, producers, marketers, electric power generators, and industrial end-users
Contact Us
For Transwestern's directory assistance please call the Houston offices at 281-714-2000.
Call Before You Dig:
Dial 811/ or call
Arizona:
Toll Free: 1-800-782-5348
New Mexico:
Toll Free: 1-800-321-2537
Texas: Toll Free:
1-800-245-4545
Gas Control:
Toll Free: 1-866-999-8975
Shelley Corman
Sr. Vice President, Marketing & Regulatory
711 Louisiana, Suite 6.45
Houston, TX 77002
Phone: (281) 714-2010