Pipeline Construction Update

Construction Methods

Energy Transfer (which bought Sunoco) continues to construct the Mariner East 2 and 2X pipelines in West Whiteland Township through their contractor, Michels. Construction is not expected to be completed until some time in 2020. 

Where you see large sound walls around pipeline construction sites, Energy Transfer is installing pipes deep underground via horizontal directional drilling (HDD). 

Where HDD does not work because of geology or other factors, Energy Transfer is opening trenches and installing the pipe where they can and boring underneath other areas, such as roads and streams, where they cannot. 

Mariner East 2 and 2X Construction Update

(updated February 24, 2020)

Shoen Road north to Devon Road in Uwchlan Township - Construction method: HDD; drill site at Whiteland West Apartments 

Status: After being shut down for over two years, Energy Transfer resumed drilling at the Shoen Road drill site in mid-October. Then DEP again shut down drilling on October 18, 2019 because groundwater was flowing down the pilot hole into the drill pit. Energy Transfer will continue to drill in place to keep the pilot hole stabilized. They are not permitted to advance the drill until given permission to resume work by DEP.

Shoen Road south to Coeway Lane - Construction method: open trench, except for boring under the stream and Route 100 

Status: Both pipes have been installed from Shoen Road to the stream.  ET received a permit from DEP to direct bore under the stream and Route 100.  They are setting up for the bore and expect to begin in early March. 

Coeway Lane to Swedesford Road - Construction method: open trench, except for boring under Exton Lane and Swedesford Road  

Status: Both pipelines are installed and final landscape restoration is complete on properties between the Giant and Swedesford Road. Final landscape restoration will be done between the Giant and Coeway Lane after boring under Route 100 is complete in the spring.

Swedesford Road to Laborers Training Center - Construction method: open trench, except for bores under wetlands, woods and Lincoln Highway 

Status: Both pipelines are installed under Swedesford Road and in Meadowbrook Manor Park. Open trench construction near the library is almost done.  DEP approved a permit modification changing the type of bore under environmentally sensitive areas and Lincoln Highway. ET is waiting for one more minor permit modification to bore under wetlands. When they receive that, they will complete all of the boring and remaining open trench work between the bores. 

Laborers Training Center to Exton Station/Stonegate Court - Construction method: HDD for the 16”; under DEP review for the 20” 

Status: The 16” pipe was installed via HDD and led to the subsidence by Lisa Drive. ET has applied for a major modification of their DEP permit to allow for open trench construction for the 20” pipe, except for under the railroad and 30 bypass where they would bore. The public comment period has ended.

Stonegate Court to Pullman Drive - Construction method: HDD; drill site at Stonegate Court 

Status: Both pipelines are installed. Final restoration will be completed after the pipeline near Lisa Drive is installed because testing needs to take place from Stonegate to Lisa Drive.

Pullman Drive to Ship/Boot Road (Corner Park Apartments) - Construction method: HDD; drill site by Corner Park Apartments  

Status: The 16" pipeline is installed. Drilling for the 20" pipeline is done and reaming is underway.

Ship/Boot Road to 202 drill site in West Goshen Township - Construction method: HDD; drill site by Corner Park Apartments  

Status: The 16” pipeline is installed.  DEP completed their reevaluation of this HDD segment and authorized work to proceed.  Prep work for HDD is underway at the Boot Road site by 202 in West Goshen.