Sunoco Pipeline Information


September, 2020

Uwchlan Township issued Sunoco a Noise Violation notice on September 10th for the work being completed at the Herman-O West drill site. That notice can be found by Clicking Here.

August, 2020

The Uwchlan Township Board of Supervisors have issued a letter to Governor Wolf in response to Sunoco's August 10 Marsh Creek incident. Click Here to view this letter.

July, 2020

Uwchlan Township issued Sunoco a Noise Violation notice on July 14th for the work being completed at the Whitford Road drill site. That notice can be found by Clicking Here.

May, 2020

Uwchlan Township has been informed by Sunoco that construction activities and drilling operations within the Township are scheduled to resume on the following dates:

* Monday May 4, 2020 - Drill Site HDD 350 N. Whitford
Road to Devon Drive in Marchwood

* Saturday May 9, 2020 - Drill Site HDD 320 Eagleview
Boulevard to Herman O West Drive to Wharton Boulevard

Sunoco has informed the Township that construction crews will be implementing CDC and Pennsylvania Department of Health safety measures at all of their worksites. Any updates to this timeline will be posted on the Township Website. 

October, 2019

Update regarding Horizontal Directional Drill (HDD) from Devon Drive in Uwchlan Township to Shoen Road in West Whiteland.

Sunoco is currently preparing the site off of Devon Drive for the mobilization of a drill rig and associated equipment. Tentatively, the drill and equipment will be mobilized during the week of October 7th, with drilling operations starting the week of October 14th. Schedules are subject to change due to weather, contractor schedules and equipment availability.

Drilling operations are anticipated to occur from both the Devon Drive work area and the Shoen Road work area. The length of time for the drill operation is not known at this time.

For questions or concerns, property owners that own land in which Sunoco has an easement on should contact their Sunoco assigned Land Agent. Others can contact the Sunoco Pipeline Community Affairs team at (855) 430-4491.

June, 2019

Sunoco Pipeline, an Energy Transfer Partnership, as part of their Mariner East Pipeline Project, has reported that notification has been made to the Pipeline and Hazardous Materials Safety Administration (PHMSA) on or about June 22, 2018, that they intend to use an existing pipeline to transport Natural Gas Liquids (NGLs).                                  

Sunoco advised that it completed a refurbishing of this line in 2016 and the pipe is currently active and being used by Sunoco Pipeline to transport other petroleum products. Sunoco is required to provide PHSMA a 60-day notice that they intend to start transporting NGLs in the existing pipeline. It is expected that there will be little to no above ground activity and or construction involved in the changeover.

The changeover is currently expected to occur by the end of September.  Sunoco has provided the Pennsylvania Utility Commission (PUC) and PA Department of Environmental Protection (PA DEP) courtesy notification of this change over. A map depicting the location of this pipeline can be found by Clicking Here. 

Mariner East 1 

The Mariner East 1 project involved repurposing an existing pipeline that previously carried products from the former oil refinery located at Marcus Hook in Delaware County, PA to markets in the west. The pipeline was refurbished, as the Mariner East Project, to carry 70,000 barrels daily of natural gas liquids (liquid propane and ethane) from Western Pennsylvania to Marcus Hook for both domestic distribution and export. Mariner East 1 utilizes mostly existing 8-inch diameter steel pipeline, except for a portion of the line, located in western Pennsylvania that was increased to 12-inch diameter steel pipe. The Mariner East 1 project was completed in late 2014 and is shipping both ethane and propane.

Mariner East 2 

Sunoco Logistics is proposing to expand the existing Mariner East pipeline system through the construction of the Mariner East 2 (PA Pipeline Project) project.  When constructed, this project will transport natural gas liquids from Ohio and the Pittsburgh area to the Marcus Hook facility for both domestic distribution and export. The Mariner East 2 pipeline, proposes approximately 350 miles of pipe, spanning Pennsylvania, West Virginia and Ohio.  Mariner East 2 will have an initial capacity of approximately 275,000 barrels a day of natural gas liquids using a 20" diameter pipeline.  The length of the project through Chester County is approximately 23.6 miles and in Delaware County, 11.4 miles.  Approximately 80% of the Mariner East 2/PA Pipeline Project is to be located within existing right-of-ways.

On February 13, 2017, the PA DEP issued the necessary Chapter 105 (Water Obstruction and Encroachment) permits for each county the project will cross and the Chapter 102 (Erosion and Sediment Control) permits for each PA DEP region the project will cross.  Sunoco anticipates that construction of the project will begin in late winter/early spring 2017 and that it will be completed by the end of the third quarter of 2017. Sunoco has also  determined that, in addition to the 20" ME2 pipeline, a second 16" pipeline  will be added to the Mariner East project easement.  Sunoco anticipates  that this pipeline project will be completed in mid- to late 2018.

With  the commencement of construction, Sunoco has provided DEP with a 24 hotline  number for the Pennsylvania Pipeline Project, also known as Mariner East II  (ME2).  This number is: 1(855)-430-4491.  This hotline allows for  inquiries and concerns to be directed to Sunoco during construction.  If  there are concerns related to erosion and sedimentation and site restoration,  residents can contact the Chester County Conservation District (CCCD) at (610) 925-4920.   If there are questions or concerns regarding stream or wetland crossings,  residents can call DEP directly at (484) 250-5900.

Contact Information 

Organization and Phone Number
  • Pennsylvania Public Utility Commission: 1 (800) 692-7380
  • PHMSA Pipeline Safety - Eastern Region Office (609) 771- 7800
  • Chester County Conservation District: (610) 925-4920
  • Sunoco Logistics Non-emergency Hotline: 1(855) 430-4491



ReadyChesco is a system that helps County and Local officials send emergency text alerts and voice calls to you quickly. ReadyChesco can send these to your cell phone, home phone, office phone, pager, and/or E-mail account.  

You can learn more about this program by Clicking Here, or by visiting

Reporting a Potential Well Impact to DEP

If you live in Southeast Pennsylvania and believe Sunoco/ETP/Mariner work has impacted your drinking water, you should:

  1. Call Virginia Cain with the DEP at  (484) 250-5991
  2. Leave a message that you are reporting a potential well being impacted.
  3. Give Virginia time to call you back
  4. Call the Sunoco Hotline:  1(855) 430-4491

Sunoco Pipeline Easements

The Chester County Bar Association provides a lawyer referral service. Click on the link above, then check the box for "Find a Lawyer" and then click “Real Estate Litigation” and someone from the Bar Association will contact you.