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The PA Pipeline Project (PPP)/Mariner East II is an expansion of the existing Sunoco Mariner East pipeline system. Sunoco recently upgraded its existing Mariner East I pipeline to transport natural gas liquids from Ohio and the Pittsburgh area to its Marcus Hook Facility in Delaware County. More than 80% of the PPP will follow the same pipeline corridor as Mariner East I. The pipeline will traverse 17 counties in the southern tier of Pennsylvania.

Below is information on DEP's review and approval of the permit applications and other useful project information. The material is presented here to enable the public to readily review the application material, noted technical deficiencies and the company's responses to the technical deficiencies. The other material on this web page represents other documents associated with this project that the Department has received.

Additional documents, such as additional correspondence and emails between the DEP and the Applicant, may be in DEP files maintained at that regional office in which a given portion of the project is located. Persons wishing to review the entire file for this application should schedule a file review with the appropriate regional office (i.e. Southwest, South-Central or Southeast).

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PPP/Mariner East II Project Overview Information Sheet

This information sheet provides a summary of the project and current status.

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Compliance and Enforcement Information

Approved Chapter 105, Water Obstruction and Encroachment Permits and Chapter 102, Erosion and Sediment Control (E&S) Permits

Addendums to Chapter 105, Water Obstruction and Encroachment Permits and Chapter 102, Erosion and Sediment Control (E&S) Permits

Historic Applications and Public Participation Information

Press Releases:

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Compliance and Enforcement Information

Consent Assessment of Civil Penalty

On April 27, 2018, DEP entered into a Consent Assessment of Civil Penalty with Sunoco Pipeline LP for violations resulting from construction activities on the Mariner East 2 pipeline project. Sunoco's construction activities resulted in an unpermitted discharge of drilling fluids to wetlands, wild trout streams, and High-Quality Waters at a number of locations in Allegheny, Blair, Cambria, Cumberland, Dauphin, Huntingdon, Indiana, Lancaster, and Washington Counties in violation of its permits and the Clean Streams Law.  In each instance, Sunoco was required to halt operations, remediate the impacts, and submit proposed modifications to its construction methodologies to DEP for approval.  Sunoco was allowed to resume operations only after DEP reviewed and approved Sunoco's proposed modifications. This penalty is in addition to the $12.6 million penalty levied against the company in February and covers separate violations.

Resolution of Petition for Supersedas

On April 16, 2018, 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 a petition for supersedeas filed before the Environmental Hearing Board.

That agreement can be viewed here

Below are the following Exhibits:

  • Exhibit 1 - The April 2018 Inadvertent Return (IR) Assessment, Preparedness, Prevention and Contingency (PPC) Plan
  • Exhibit 2 - A red line comparison of the February 6, 2018 version of the IR PPC Plan to the April 2018 HDD IR Plan
  • Exhibit 3 - A red line comparison of the August 8, 2017 version of the IR PPC Plan to the April 2018 HDD IR Plan

Statement of Settlement of Suspension of Construction Activities

On February 8, 2018, DEP and Sunoco reached an agreement to lift the January 3, 2018 order suspending permits for the Mariner East 2 pipeline project. The Consent Order and Agreement includes a civil penalty of $12.6 million and resolves violations outlined in the January 3 order, as well as others discovered in the course of DEP's review. The COA and supporting documents is below, along with a breakdown of Sunoco's required actions under the January 3 order.

Statement on Settlement of Suspension of Drilling:

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 ME2 pipeline being built by Sunoco, LP.

That agreement can be viewed here (PDF).

As part of the agreement reflected in the Environmental Hearing Board Stipulated Order dated August 9, 2017, Sunoco made revisions to some of the plans associated with the project, which are provided below:

Under the agreement, Sunoco will 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 where HDD activity will take place. The reevaluations will include site specific geologic data for each location. The reevaluation reports will be posted to this webpage as they are received.

HDD Reevaluation Reports

As part of the August 9, 2017 Environmental Hearing Board Stipulated Order, Sunoco is to provide DEP for review supplemental HDD Analysis. The HDD Reevaluation Table represents the supplemental information that DEP has received to date.

Public comments can be submitted within 14 calendar days from the date each HDD study has been posted on the table by sending an email to EP-Pipelines.

To view details of each HDD study and public comments, visit the HDD Reevaluation Table. Each public comment is listed with the identifying Commentator ID number at the end of the comment.

Consent Order and Agreements:

Inadvertent Returns:

The following spreadsheets detail the inadvertent returns and the status of the incident for construction related to the Mariner East 2 pipeline. This information will be updated regularly.

Notices of Violation:

Approved Chapter 105, Water Obstruction and Encroachment Permits and Chapter 102, Erosion and Sediment Control (E&S) Permits

On February 13, 2017, DEP approved the permit applications from Sunoco Pipeline L.P. for the PA Pipeline Project/Mariner East 2 pipeline project. DEP considered 17 Chapter 105 permit applications and 3 Chapter 102 permit applications for the project.

Addendums to Chapter 105, Water Obstruction and Encroachment Permits and Chapter 102, Erosion and Sediment Control (E&S) Permits

DEP received 2 requests for a major permit modification to the E&S Permit (ESG0100015001) by the Sunoco Pipeline, L.P. for their Mariner East 2 Pipeline in West Whiteland Township, Chester County. These requests have been coordinated with related HDD Re-Evaluation Reports submitted in November 2017 by Sunoco Pipeline, L.P. These permit modifications are now moving forward in the review process.

  • The first request, received October 11, 2017, is entitled Major Modification 1 – East Swedesford Road – HDD S3-381 (PDF). It involves a change in installation methodology for a portion of the project as a result of concerns raised by Aqua America, the local water authority, regarding their Hillside Drive production well along East Swedesford Road.
  • The second request, received October 18, 2017, is entitled Major Modification 2 – North Pottstown Pike – HDD S3-370 (PDF). This modification request is a change in installation methodology for a portion of the project following more in-depth hydrogeology analysis and seismic testing.

On February 10, 2018, DEP provided notice of the Request for Permit Modifications in the PA Bulletin.

On April 21, 2018, DEP provided notice in the PA Bulletin of the extension of the comment period and an associated public hearings.

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On February 6, 2017, DEP received updated application material from Sunoco Pipeline, L.P. in response to the technical deficiency items that were provided to the company on January 27, 2017, January 30, 2017 and on February 1, 2017.

PROJECT-WIDE MODIFICATIONS

DEP received a request for project-wide permit modifications to the E&S Permits (ESG0300015002; ESG0500015001; ESG0100015001) and WO&E Permits (E02-1718; E06-701; E07-459; E11-352; E15-862; E21-449; E22-619; E23-524; E31-234; E32-508; E34-136; E36-945; E38-194; E50-258; E63-674; E65-973; E67-920) by the Sunoco Pipeline, L.P. for their Mariner East 2 Pipeline.

  • The request (PDF), received February 27, 2018, is to allow a contractor to change the method of installation of the pipeline at authorized conventional auger bore sites to a cradle bore.
    • Upon review of the modification request (PDF), DEP found the project-wide modifications adequate and issued a letter on March 19, 2018 indicating such.
  • The request (PDF), received March 14, 2018, is to allow temporary equipment bridges to be in place greater than 1 year.
    • Upon review of the modification request (PDF), DEP found the project-wide modifications adequate and issued a letter on March 19, 2018 indicating such.

Historic Applications and Public Participation Information

Comment Response Document

In 2016, DEP held two public comment periods. The Comment Response Document summarizes the comments submitted to DEP by 29,835 commentators during the public participation process. These comments were submitted through the 2 comment periods and 5 public hearings that were held for the project.

TECHNICAL DEFICIENCY LETTERS

On September 6, 2016, DEP sent to Sunoco Pipeline, L.P. technical deficiency letters for the proposed PA Pipeline Project (PPP)/Mariner East II. These letters outlined technical deficiencies that were found during the technical review of the Chapter 105, Water Obstruction and Encroachment Permits and Chapter 102, Erosion and Sediment Control General Permit for Earth Disturbance Associated with Oil and Gas Exploration, Production, Processing or Treatment Operations or Transmission Facilities (ESCGP-2) Notices of Intent (NOI).

On December 5, 2016, DEP received updated application material from Sunoco Pipeline, L.P. in response to the technical deficiency letters that were sent on September 6, 2016.

The following responses to technical deficiency letters and revised permit applications are listed below.

September 6, 2016
DEP's technical deficiency letters

December 5, 2016
Sunoco's updated application material

E02-1718 - Allegheny County

E02-1718 - Allegheny County

E11-352 - Cambria County

E11-352 - Cambria County

E32-508 - Indiana County

E32-508 - Indiana County

E63-674 - Washington County

E63-674 - Washington County

E65-973 - Westmoreland County

E65-973 - Westmoreland County

E31-234 - Huntingdon County

E31-234 - Huntingdon County

E34-136 - Juniata County

E34-136 - Juniata County

E36-945 - Lancaster County

E36-945 - Lancaster County

E38-194 - Lebanon County

E38-194 - Lebanon County

E50-258 - Perry County

E50-258 - Perry County

E67-920 - York County

E67-920 - York County

E06-701 - Berks County

E06-701 - Berks County

E07-459 - Blair County

E07-459 - Blair County

E21-449 - Cumberland County

E21-449 - Cumberland County

E22-619 - Dauphin County

E22-619 - Dauphin County

E23-524 - Delaware County

E23-524 - Delaware County

E15-862 - Chester County

E15-862 - Chester County

ESG0500015001 – Counties: Allegheny, Cambria, Indiana, Washington and Westmoreland

ESG0500015001 – Counties:  Allegheny, Cambria, Indiana, Washington and Westmoreland

ESG0300015002 – Counties: Huntingdon, Juniata, Lancaster, Lebanon, Perry, York, Berks, Blair, Cumberland and Dauphin

ESG0300015002 – Counties: Huntingdon, Juniata, Lancaster, Lebanon, Perry, York, Berks, Blair, Cumberland and Dauphin

ESG0100015001 – Counties: Delaware and Chester

ESG0100015001 – Counties: Delaware and Chester

PPP/Mariner East II Shapefiles

The Department received revised shapefiles from Sunoco Pipeline, L.P. The revised files were provided to mirror the information provided in the technical deficiency responses.

These shapefiles are the GIS data layers associated with the permits that have been submitted for the proposed pipeline project. These shapefiles are not required as part of a permit application and are not commonly submitted but were provided to the Department by Sunoco Pipeline, L.P.

The files were accepted by the Department to aid in the review of the application material given the large scale of the project. The shapefiles ease the review by displaying some information contained in the hardcopy of the plans and application in a different format.

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On August 6, 2016, DEP provided notice in the Pennsylvania Bulletin that the Chapter 102, Erosion and Sediment Control General Permit for Earth Disturbance Associated with Oil and Gas Exploration, Production, Processing or Treatment Operations or Transmission Facilities (ESCGP-2), Notices of Intent (NOI) were under technical review for Sunoco Pipeline, L.P.'s PA Pipeline Project (PPP)/Mariner East II. DEP accepted written comments through Tuesday, September 6, 2016 on the permit applications.

On June 25, 2016, DEP published notice in the Pennsylvania Bulletin of the Chapter 105, Water Obstruction and Encroachment Permits. DEP accepted written comments through Wednesday, August 24, 2016. The permits associated with the comment period included: