Energy Transfer and their Sunoco Logistics Partners unit are about to restart underground horizontal directional drilling (HDD) work for the Mariner East 2 (ME2) pipeline in West Whiteland Township (Chester County), PA–work that has been on pause since July 2017. Yet ME2 actually went online in December (see Sunoco LP’s Mariner East 2 NGL Pipeline Now Online!). Question: How can ME2 be online when not all of the work is yet done?!