PA DEP Issues Final Guidance on Using HDD for Pipe Construction

Horizontal directional drilling (HDD) is a form of trenchless drilling to install pipelines, like natural gas pipelines, underground without digging a big trench first. It uses directional drilling, similar to drilling a horizontal shale well, in order to install the pipeline. In 2018, Energy Transfer’s Sunoco Logisitics unit, which was building the Mariner East 2…

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