Sunoco Pipeline — Mariner East

On April 28, 2017, Sunoco Logistics Partners and Energy Transfer Partners announced the completion of their merger. As a result, Sunoco Logistics content has been migrated to Energy Transfer's website. Visit Website

Overview of Mariner East Project

mapMariner East 1 (completed)

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. For additional information on the PaDEP permits, view the DEP permit information near the bottom of this page. 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: 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.

For more information on the Mariner East project:

Sunoco Mariner East 2 Newsletter

Sunoco periodically provides a community newsletter to assist residents in staying current with the construction status of the Mariner East 2 project. The newsletter provides updates, by segment, on the progress of the project. Any questions regarding the Mariner East 2 project can be directed to the Sunoco Pipeline Community Affairs team at 855-430-4491. Calls are answered 24 hours a day and are logged for responses.

November/December 2018

newslettersPrevious Newsletters

Mariner East Mapping

Chesco and Delco Maps

Sunoco Mariner East 2 Municipal Maps

Sunoco Logistics has distributed a series of maps for the effected municipalities in Chester County that have the Mariner East 2 line proposed to run through them.  These maps show the proposed route of the pipeline, the type of method that is proposed for installation (either horizontal directional drilling (HDD) or open cut method), the areas where the HDD will be staged, as well as the existing Mariner East 1 Pipeline.  You can view the maps here:

* The installation of proposed ME2 pipelines in West Whiteland Township, from Shoen Road to Lincoln Highway, were originally proposed to be installed via Horizontal Directional Drilling (HDD). Open trench construction method is now being considered with the exception of roadway crossings and other environmentally sensitive areas where the pipelines will be bored.

Project Activity

Chester County Commissioners request assistance from PUC and PEMA regarding ME2

On December 11, 2018, the Chester County Board of Commissioners wrote to the Pennsylvania Public Utilities Commission and the Pennsylvania Emergency Management Agency requesting assistance from both agencies to review and provide observations of Sunoco's Hazard and Risk analysis, as well as to conduct a review of municipal and school emergency plans for those municipalities affected by the Mariner East 2 pipeline.

PUC Response to area school districts

On October 23, 2018, West Chester Area School District, Downingtown Area School District and Rose Tree Media School District sent a joint letter to the Manager of Gas Safety at the PA PUC requesting safety information and a safety assessment on the 12-inch Sunoco Pipeline. 

Full Mariner East pipeline risk assessment report released

On October 19, 2018, the Quest Consultants Quantitative Risk Analysis for the Mariner East Pipeline Project was released online. The study was completed with funding raised by a combined group of citizen advocacy groups and townships. View the report

DEP announces 61 watershed restoration and stormwater projects funded by landmark penalty against Sunoco

On October 16, 2018, PA DEP released the listing of projects that will be funded as a result of a $12.6M fine to Sunoco. Chester County projects are receiving over $1.8M. View listing.

DEP completes review, accepts permit modification Requests for ME2 in West Whiteland Township

On August 16, 2018, the Pennsylvania Department of Environmental Protection announced via press release that they had completed their review for permit modifications to Chapter 102 and Chapter 105 permits submitted by Sunoco Pipeline, specifically related to two sites in West Whiteland Township. Sunoco still needs approval from the PA PUC before construction can resume, after a shutdown of more than two months. More detailed information regarding the permits, public comments and response documents can be found on DEP's Mariner East 2 webpage.

PA PUC votes to restart ME2 construction in Chester County of Chester

On August 2, 2018, the Pennsylvania Public Utilities Commission voted to allow the restart of construction on the Mariner East 2 pipeline at eight locations in West Whiteland Township. Injunctions on four remaining sites are still continued, where necessary permits have not been issued. The PUC indicated that while these actions address emergency injunctions, the PUC Office of Administrative Law Judge has an initial prehearing conference scheduled for late-August to address a "broad complaint" and various procedural issues.

Sunoco Releases Fact Sheet Regarding Service Change of 12-inch Line

On July 19, 2018, Sunoco released a fact sheet regarding the planned change of service on a section of 12-inch refined products pipeline to address client demand for Mariner East 2. The segment is known as the Point Breeze to Montello line. A 60-day notification to the Pipeline Hazardous Materials Safety Administration has occurred, and the change in product and direction is planned to begin mid-August. The fact sheet includes information related to the upgrading of the pipeline, integrity management, and regulatory notification requirements. View the Fact Sheet.

PUC Judge's Decision on West Goshen Settlement Agreement

On July 19, 2018, PUC Administrative Law Judge Elizabeth Barnes issued her decision  regarding whether Sunoco was acting in violation of the 2014 Settlement Agreement with West Goshen Township. Judge Barnes' decision was based on filings made in June by both West Goshen Township and Sunoco Pipeline. 

DEP Reaches Agreement with Environmental Groups Over Mariner East 2 Permits

On July 27, 2018, PA DEP issued a press release indicating that they had reached an agreement with environmental groups, related to Mariner East 2 permits. The Clean Air Council, Mountain Watershed Association, and the Delaware Riverkeeper Network settled their appeal of 20 permits issued to Sunoco for the Mariner East 2 pipeline project. In the settlement DEP committed to continue to develop and implement procedures for environmental protection associated with the construction of natural gas pipelines in Pennsylvania in collaboration with the appellants.

County Commissioners Request PA PUC to uphold Mariner East Suspension

On June 5, 2018 the Chester County Commissioners sent a letter to the Secretary of the Pennsylvania Public Utilities Commission encouraging the secretary to uphold the suspension of the Mariner East pipeline project. View the Letter

PUC Administrative Law Judge Suspends Mariner East 1 Service; Mariner East 2 Construction in West Whiteland Township

On May 21, 2018, a Pennsylvania Public Utilities Commission administrative law judge issued an emergency order to immediately suspend service on the Mariner East 1 line and construction of the Mariner East 2 line in West Whiteland Township. This order was issued in response to a complaint from State Senator Andy Dinniman regarding the safety of construction in West Whiteland Township. View Order

DEP Announces new grant funding for water quality improvements along the ME2 pipeline corridor

The Wolf Administration announced the creation of a new grant program to be funded by Sunoco’s  $12.6M penalty for permit violations.  Grants will be awarded for projects that will reduce or minimize pollution and protect clean water in the 85 municipalities that the pipeline corridor traverses.  Those eligible to apply include the municipalities, county conservation districts, incorporated watershed associations, educational institutions and non-profit organizations located along the length of the Mariner East 2 pipeline route.  The grant application round will open on May 7, 2018 and run for 45-days.  Awardees will be announced in the summer of 2018.  Examples of eligible projects are listed on the DEP website for the grant announcement.

DEP to hold public hearing for ME2 drilling method changes in West Whiteland

On April 30, 2018, the Pennsylvania Department of Environmental Protection will hold a public hearing on two proposed changes to Sunoco's permit for the Mariner East 2 pipeline. The hearing will deal with Sunoco's request to change pipeline construction techniques at two drilling sites in West Whiteland Township. The hearing is scheduled for Monday, April 30 from 6:30 p.m. to 9:30 p.m. at E.N. Peirce Middle School located at 1314 Burke Road in West Chester. View the news article.

DEP Authorizes Restart  of Mariner East 2 Construction

On February 8, 2018, the Pennsylvania Department of Environmental Protection reached an agreement to lift the January 3rd order that suspended construction activity.  The Consent Order and Agreement included a civil penalty ($12.6M) and resolved violations that were outlined in the January order, in addition to those discovered in the course of the DEP review of the project.

DEP Suspends Mariner East 2 Construction Permits

On January 3, 2018, the Pennsylvania Department of Environmental Protection issued an order suspending all construction activities associated with the Sunoco Mariner East 2 project. This order was issued in response to a series of spills, unauthorized horizontal directional drilling, and other violations of state laws.

Construction on ME2 resumes after temporary suspension of activity

On August 9, 2017, the Pennsylvania Department of Environmental Protection reached an agreement with the Clean Air Council, Delaware Riverkeeper Network, and the Mountain Watershed Association, Inc. and Sunoco to resolve the temporary suspension of horizontal directional drilling (HDD) activity associated with construction of the Mariner East 2 pipeline (ME2). This decision followed a two-week suspension of the drilling in late July due to adverse impacts on private wells and inadvertent returns of drilling mud. Under the agreement, Sunoco must notify all landowners and water supply owners within 450 feet of future HDDs and provide additional opportunities for water testing for those owners. Sunoco will also reevaluate at least 63 areas across the state where HDD activity will take place. The reevaluations will include site specific geologic data for each location. The reevaluation reports will be posted to the ME2 PaDEP webpage as they are received. View complete information on PaDEP compliance and enforcement of the Mariner East 2 project.

PA DEP Approves PA Pipeline Project/Mariner East 2 Permits

On February 13, 2017, the Pennsylvania Department of Environmental Protection (PA DEP) approved and issued the permits for Sunoco Pipeline LP for the Pa Pipeline Project/Mariner East 2 pipeline project. The permits include a Chapter 105 permit (Water Obstruction and Encroachment) for each county as well as a Chapter 102 (Erosion and Sediment Control) permit for each DEP region the project crosses.

Pa DEP Issues Technical Deficiency Letters for Sunoco Logistics' Mariner East 2 Project

On September 6, 2016, Pennsylvania DEP issued technical deficiency letters for the Sunoco Logistics Mariner East 2 Project (a.k.a. Pennsylvania Pipeline Project) in Chester and Delaware Counties. These letters outline the technical deficiencies found during the review of the Chapter 105 (Water Obstruction and Encroachment Permit) and the Chapter 102 (Erosion and Sediment Control General Permit (ESCGP-2) for Earth Disturbance Associated with Oil and Gas Exploration, Production, Processing or Treatment Operations or Transmission Facilities, ESCGP-2) Notices of Intent. The reviews were performed by the PA DEP, with extensive input from both Chester County Conservation District and Delaware County Conservation District.

PaDEP Press Release on Mariner East 2 Permit Applications - 07-08-16

The PaDEP has begun its technical review of all Chapter 102 and 105 permit applications submitted by Sunoco Logistics for the Mariner East 2 project (now referred to as the Pennsylvania Pipeline Project). The project requires multiple permits from DEP including permits for earth disturbance of five acres or more and permits for proposed activities located in, along, across, or projecting into a watercourse, floodway or body of water including wetlands. View Press Release

DEP Public Hearing in Chester County

The Southeast Region includes Chester and Delaware counties. The public hearing in this region will be held:

Wednesday August 10, 2016 6:30 P.M - 9:30 P.M.
Sykes Student Union at West Chester University
110 W. Rosedale Avenue, West Chester, PA 19382

View permit information for the Southeast region.

Information Sheet - June 26, 2016

The PaDEP has issued this information sheet on the status of the Mariner East 2 pipeline project and the permitting process. View Information Sheet

Sunoco Logistics Integrity Management Programming Work to be Performed

March 8, 2016 - Landowners and municipalities have received notifications that there will be planned integrity work on the 12" pipeline corridor that runs from Elverson, Chester County to Glen Riddle, Delaware County. This pipeline corridor primarily utilizes the same corridor as the Mariner East 1 and planned Mariner East 2. As part of the integrity management program, inspections and evaluations have been underway identifying sections that will require a repair and /or replacement to ensure the long-term integrity of the pipeline. This work will be taking place over the next 6 to 8 months, and will begin with surveying along the line in late March or early April. If it is determined that a property will be directly affected by pipeline repairs and/or replacements, a representative from Sunoco Logistics will contact the owners of those properties. Landowners are asked to call 855-430-4491 with questions about the project or general inquiries.

Mariner East 2X Open Season

After completing Open Seasons for the Mariner East 2 system, Sunoco Logistics Partners are in the process of holding an Open Season for Mariner East 2X, which will be able to transport additional volumes of petroleum products, including natural gas liquids and condensate from processing facilities in Western Pennsylvania, West Virginia and Eastern Ohio, to the Marcus Hook Industrial Complex on the Delaware River. The Open Season is offering service for ethane, propane, butane, C3+, natural gas and condensate, depending on customer interest. View Notice

Delaware River Basin Commission Hearing for Mariner East 2

Sunoco Pipeline LP has applied to the Delaware River Basin Commission (DRBC) to approve the construction of the Mariner East 2 project (including one 20-inch diameter pipeline and one 16-inch pipeline) within the Delaware River Basin. Sunoco is requesting to withdraw water for dust control, pipeline cleaning, horizontal directional drilling, and hydrostatic testing. The total quantity of water they are estimating for these purposes totals 2.508 million gallons of water. View Draft Docket

This project has been assigned docket number D-2015-018-1, and will be heard by the DRBC on Tuesday, November 10, 2015 at 1:30 p.m., with other applications. View Projects

Written comments will be accepted by the DRBC through the close of business on November 12. If you wish to attend the hearing, the DRBC address is 25 State Police Drive, West Trenton, NJ 08628.

Erosion and Sediment Control General Permit

On September 15, 2015, the Chester County Planning Commission provided comments to Sunoco and impacted municipalities regarding the Mariner East Project's Erosion and Sediment Control General Permit (ESCGP-2) application review. View Letter

Clean Air Council - Mariner East 2 Lawsuit

The Clean Air Council and the Law Offices of Pinnola and Bomstein filed a civil action against Sunoco Pipeline in the Philadelphia County Court of Common Pleas in late August. The lawsuit seeks to establish that Sunoco Pipeline is not a public utility and does not have the right of eminent domain for the proposed Mariner East 2 natural gas liquids project. The lawsuit claims that the Mariner East project would not serve any public need in Pennsylvania and that Sunoco Pipeline has not received the required regulatory authority for the Mariner East 2 pipeline. As such, the lawsuit claims that Sunoco Pipeline should not be allowed to use eminent domain to build the pipeline.

Sunoco Logistics Mariner East 2 Open House - June 29, 2015

On June 29, 2015, Sunoco will host open house at the Sykes Student Union Building, located at 110 W. Rosedale Avenue on the West Chester University campus. The purpose of the open house is to provide potentially impacted landowners and local officials the opportunity to learn more about the Mariner East 2 project, interact directly with officials from Sunoco Logistics and partnering companies on the project, and collect information materials such as maps and fact sheets.

This open house will be held from 5:30-8:30 and is intended to focus on the eastern half of the Chester County portion of the Mariner East 2 pipeline project, from West Whiteland Township through Westtown Township. Attendees will have a chance to ask questions and address concerns regarding the near and long-term Mariner East 2 project during an informational presentation. Presentations will be held from 6-7 pm and 7:15-8:15 pm.

Sunoco Logistics Mariner East 2 Open House - June 10 ,2015

On June 10, 2015, Sunoco will be hosting an open house, at the Brandywine Manor House, located at 120 Germany Hollow Road, Honey Brook, PA 19344. The purpose of the open house is to provide potentially impacted landowners and local officials the opportunity to learn more about the Mariner East 2 project, interact directly with officials from Sunoco Logistics and partnering companies on the project, and collect information materials such as maps and fact sheets.

This open house will be held from 5:30-8:30 and is intended to focus on the western half of the Chester County portion of the Mariner East 2 pipeline project, from Elverson Borough, south through Uwchlan Township. A second open house will be held for the eastern portion of Chester County at a later date. Attendees will have a chance to ask questions and address concerns regarding the near and long-term Mariner East 2 project during an informational presentation. Presentations will be held from 6-7 pm and 7:15-8:15 pm.

More information on the Brandywine Manor House.

West Goshen To Host Sunoco Pump Station Public Meeting

On Tuesday April 14, 2015, the West Goshen Board of Supervisors will host a public meeting at West Chester East High School. This public meeting concerns the ongoing legal dispute with Sunoco Logistics about the Boot Road Pumping Station. The meeting will start promptly at 6:30 and will end at 10:00 p.m. in the auditorium, and will include a presentation from the Township's pipeline safety expert, Accufacts, Inc. Questions about the meeting can be directed to the township at 610-696-5266 or twp@westgoshen.org.

View the Proposed Settlement Agreement and Accufacts, Inc. Safety Report (listed in Appendix 5).

West Goshen Township held a public meeting on April 14, 2015 to discuss and vote on a proposed settlement agreement with Sunoco, regarding the Boot Road pumping station. The supervisors voted to table their decision until the May meeting, by a vote of 4-1.

West Goshen approves settlement with Sunoco
05-14-15, Daily Local News

Sunoco Logistics withdraws public utility petitions

On March 5, 2015, Sunoco Logistics Partners LP requested that the Pennsylvania Public Utilities Commission (PA PUC) withdraw the last of 31 requests for exemptions to local zoning rules. Read Article

Mariner East Pipeline Refill Notification

Sunoco Pipeline, L.P. completed their Line Filling Process on the Mariner East Pipeline. As anticipated, the line filling processes began on 12/19/14 at the Mark West facility in Washington County, PA, and took approximately 7 days to complete.

Joint Motion of PUC on Administrative Judges Initial Finding

On October 2, 2014, there was a Joint Motion of the PUC (Vice-Chairman Coleman and Commissioner Witmer) to dismiss all preliminary objections, reverse the Initial Decision, and return Sunoco's amended petitions to the Office of Administrative Law Judge for further proceedings. The Commissioners indicate that this proceeding asks the PUC to decide a very specific question - "whether enclosures (walls and a roof) that are built around and over a valve control or pump station should be exempt from municipal zoning regulation." Additionally, the Joint Motion indicates that based on various mergers dating back to the 1930s, Sunoco is both a "public utility" and a "public utility corporation." Read Joint Motion

View the Pennsylvania PUC's case information on Docket number P-2014-2411966 including, any daily actions performed, and all public documents associated with the Sunoco Mariner East project.

PA Administrative Judges Initial Finding

On July 23, 2014, Pennsylvania PUC Administrative Judges issued an Initial Finding regarding the Mariner East project. Sunoco had previously filed petitions requesting the PUC to find that control valve stations and pump stations along their proposed pipeline were reasonably necessary for the convenience or welfare of the public. Approving this request would exempt the operator from local zoning ordinances, as the facilities would be considered public utility buildings. In this application to the PUC, Sunoco was not seeking a certificate of public convenience; authorization to build the Mariner East line; approval for siting or routing of the pipeline; or compliance with environmental or public safety requirements. The Administrative Judges' Initial Finding dismissed the petitions because the pipeline operator's proposed service is not a public utility services as defined by the Pennsylvania Municipalities Planning Code (MPC) as well as the Pennsylvania Business Corporation Law. Read the Administrative Judges' Initial Finding

June 6, 2014

On Friday, June 6, 2014, the Chester County Commissioners submitted a letter to the PA Public Utility Commission expressing their full support for the efforts of municipalities, located within Chester County and within the Commonwealth, that seek to require Sunoco to comply with and respect local zoning ordinances, in relation to the Mariner East Pipeline Project (also known as the Pennsylvania Pipeline Project). View Letter

March 21, 2014

On Friday, March 21, 2014, Sunoco Pipeline L.P. filed a petition with the Pennsylvania Public Utility Commission for a Certificate of Public Convenience to exempt any structures housing pump stations and valve control stations involved in the Mariner East Project from municipal zoning, subdivision or land development review. View Petition