Up until this point, it appeared as if nothing was going to stop the Mariner East 2 pipeline. Not the concerns of public officials. Not the lament of environmentalists. Not the howls of protest from citizens who watched helplessly as Sunoco's massive multi-billion dollar project spread like a plague across the landscape of western Delaware County and the heart of central Chester County. struck the buried Mariner East 2 pipeline. Luckily, the line is not yet active. The company confirmed that the work crew scratched the pipeline, but said there was no damage. Here's the problem. The work crew hit the pipeline at 6 feet. However, they had been informed by Sunoco that the pipeline was buried 9 feet deep. This is exactly the kind of situation that residents fear. The spot where the pipeline was struck is just a few hundreds yards from Glenwood Elementary School. The incident is now under investigation by company officials, as well as the PUC. "Had ME2 been operational, this could have been the kind of catastrophe we've been concerned about," said Eric Friedman, a member of DelChesco United for Pipeline Safety. On Saturday groups opposed to Mariner East 2 held a rally in downtown West Chester. It was the biggest event yet, with several hundreds people in attendance. The full PUC is expected to rule later this week on the judge's decision to halt construction and shut down Mariner East 1. Sunoco must back up its words - that they are installing the pipeline and will operate it to the highest safety standards in the industry. Incidents like the one in which a contractor hit the pipeline at 6 feet when they were told it would be at 9 feet do nothing to allay those fears.