In early March MDN reported that Sunoco Logistics’ underground horizontal drilling (HDD) work on its massive Mariner East 2 NGL pipeline near Philadelphia had resulted in several sinkholes developing (see 3rd Sinkhole Appears Near ME2 Construction in Chester County, PA). Yesterday we reported the Pennsylvania Dept. of Environmental Protection (DEP) had stopped ME2 HDD work in Lebanon County following a 50 gallon drilling mud leak (see ME2 Construction in Lebanon County Stopped for 50 Gal Mud Spill). And now, more trouble for ME2 HDD work. This time Sunoco’s work at two different locations in Blair County (Altoona area) has resulted in the DEP shutting down further HDD work at both sites. In one case, around 200 gallons of drilling mud leaked out where it wasn’t supposed to (called an “inadvertent return”)–into a wetland. In the other case, a drill pit overflowed and leaked diluted drilling fluid into the Frankstown Branch of the Juniata River. Here’s the latest in Sunoco’s series of unfortunate events…
