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Posted on: November 20, 2017

Horizontal Directional Drill (HDD) Pullback Activity

UPDATE 12/5/2017 - Pullback activity at the Park Road/Eagleview sites was completed at 11:00 PM on December 4, 2017.

UPDATE 12/4/2017 - After delays last week, pullback activity at the Park Road/Eagleview sites began today, December 4, 2017 and is expected to be completed by December 5, 2017. 

UPDATE 11/27/2017 - Pullback activity at the Park Road/Eagleview sites is expected to begin on November 28, 2017.

UPDATE 11/22/2017 - Pullback activity at the Green Valley Road/Little Conestoga and Milford Road sites was completed at 3:00 AM, November 22, 2017.


CHESTER SPRINGS, PA – Upper Uwchlan Township has received a request from Sunoco for an exemption from normal work hours for the purposes of what is called horizontal directional drill (HDD) pullback. Pullback activity includes lighting, truck traffic, welding, as well as movement and installation of pipe. The pullback process is the actual installation of prefabricated (welded) pipe into the drill hole from the exit point to the drill rig. This is the final step in the Sunoco Mariner East 2 pipeline installation. Sunoco has advised, and the Township has confirmed with third party, independent subject matter experts, that this process, once started, must continue uninterrupted through completion or there is a risk of losing the drill hole via collapse. If this occurs and the hole cannot be recovered, the drill must begin anew, significantly prolonging installation time and disruption to the community.

There are three HDD drill locations and associated exit points in Upper Uwchlan Township. Homeowners within 1000’ of a drill and/or exit site will receive notification of this planned work and issued exemption from work hours from the Township. Actual pullback activity will be posted on the Township’s website and social media outlets. Prior to pullback activity beginning all locations will be equipped with sound barriers in an attempt to mitigate light and noise pollution. Pullback activity is estimated to take one to three days, condition dependent. Work will not take place during upcoming nationally recognized holidays.

Residents with questions may contact the 24-hour Sunoco helpline at 855-430-4491 or contact the Township Manager’s office at 610-458-9400.

Upper Uwchlan Township is a Township of the Second class, population 11,500, located in central Chester County, PA. Visit us on the web at Like us on Facebook and Twitter @upperuwchlan.


The first drill site will begin pullback activity in the early morning on Tuesday, November 21. The entry and exit points for this drill site are located at the Little Conestoga/ Milford Road intersection and at Green Valley Road. 

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