Pennsylvania regulators issued another notice of violation to Energy Transfer Partners on Monday after its Sunoco Mariner East 2 natural gas liquids pipeline spilled drilling fluids into a wetland.
Energy Transfer said it spilled less than one gallon of drilling fluids into a wetland in Shirley Township and that the incident was associated with horizontal drilling.
Drilling has temporarily stopped at the site until the Pennsylvania Department of Environmental Protection gives the company permission to resume.
Since May 2017, the Pennsylvania DEP has issued 46 notices of violation to Energy Transfer for various releases during construction.
The company's last spill into this wetland happened in October when it released between 5,000-10,000 gallons of drilling fluid, which is usually a mixture of clay and water.
Several work stoppages by Pennsylvania regulators have delayed the original expected completion date for Mariner East 2. Energy Transfer hopes to complete Mariner East 2 by the end of the second quarter.