The corporate developer of a multi-billion-dollar pipeline system that takes natural gas liquids from the Marcellus Shale gas field to an export terminal near Philadelphia was charged criminally on Tuesday after a grand jury concluded that it flouted Pennsylvania environmental laws and fouled waterways and residential water supplies across hundreds of miles. Attorney General Josh Shapiro announced the sprawling case at a news conference at Marsh Creek State Park in Downingtown, where Sunoco Pipeline LP spilled thousands of gallons of drilling fluid last year. Energy Transfer, Sunoco’s owner, faces 48 criminal charges, most of them for illegally releasing industrial waste at 22 sites in 11 counties across the state.