Pipeline Construction Update
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 December 23, 2019)
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, Sunoco resumed drilling at the Shoen Road drill site in mid-October. Then DEP shut down drilling on October 18th because groundwater was flowing down the pilot hole into the drill pit. Sunoco will continue to drill in place to keep the pilot hole stabilized. They are not permitted to advance the drill until DEP makes a decision following review of information submitted by Sunoco about the water.
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; boring under the stream and Route 100 is on hold pending a decision on issuance of a modified DEP permit to change the type of bore.
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 done 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 (following issuance of a DEP permit).
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 work by the library is on hold due to litigation, and boring under environmentally sensitive areas and Lincoln Highway is on hold pending a decision on issuance of a modified DEP permit to change the type of bore. If Sunoco cannot obtain access through the Chester County Library parking lot, then they will maintain the temporary access road through Meadowbrook Manor Park until this section of pipeline construction is complete.
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. Energy Transfer 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. DEP published the public notice for that permit modification, which starts the 30-day public comment period.
Stonegate Court to Pullman Drive - Construction method: HDD; drill site at Stonegate Court
Status: The 16" pipeline is installed. Drilling for the 20" pipeline is complete and the pipe is in the ground. Testing of the 20" will take place in January.
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 will begin in January.
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. Drilling for the 20” pipeline is on hold pending a review by DEP.