(Reuters) – Pennsylvania Attorney General Josh Shapiro charged Energy Transfer (NYSE:) LP was charged with 48 environmental crimes in connection to its conduct during the construction of long-delayed Mariner East 2 liquids pipe.

“There is a duty to protect our air and water, and when companies harm these vital resources through negligence — it is a crime,” Shapiro said in a statement.

Mariner East’s work has been delayed by several state and local officials. They are mostly concerned with sinkholes near the pipelines or spillages of drilling fluids.

Energy Transfer did not respond to a request for comment. It stated recently that all stages of the pipe expansion would be completed by the 2021 end.

Mariner East moves liquids from Marcellus/Utica Shale in Western Pennsylvania to customers within the state, and even international exports from Energy Transfer’s Marcus Hook complex in Philadelphia.

According to the Attorney General’s Office, Energy Transfer failed on multiple occasions to report spillages to the state environmental regulators despite being required by law.

The Attorney General stated that drilling fluid had unapproved additives in multiple places, which could have adverse effects on drinking water from wells.

“If convicted, this company will be sentenced to fines and restitution. Shapiro explained that there is no prison time for environmental crimes and that fines are insufficient. He also stated that the office “requests for more laws to hold these corporations accountable.”

Energy Transfer has been working on the Mariner East expansion, costing $2.5B. It originally planned to close the pipeline of 350 miles (563 km) in the third quarter 2017

Pennsylvania has sent Mariner East approximately 125 violations notices since May 2017 – mostly regarding drilling fluid spillages. There have been two of these in September.