Braskem USA, headquartered in Philadelphia had a decision to make in 2016: Locate a new polypropylene plant in their own backyard, at the Marcus Hook refinery site on the outskirts of Philly–or locate it in Texas. They picked Texas because not enough NGLs (propane) were flowing to Marcus Hook due to delays (caused by Big Green lawsuits) in the Mariner East 2 pipeline.