Mariner East Pipeline Complications

Sunoco Pipeline LP’s use of horizontal directional drilling (HDD) has been linked to fouled water wells, sinkholes, and leaks of drilling fluid into waterways. Some of the most serious issues have emerged in West Whiteland Township, Chester County, where the pipeline’s route traverses a porous limestone formation called karst, which is characterized by sinkholes and depressions.

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SOURCE: Pa. Dept. of Environmental Protection

JON SNYDER / Staff Artist