Crossing of waterbodies will be conducted in accordance with state and federal permits, and with project-specific procedures. Williams will use various methods for installation of the pipeline across waterbodies, depending on classifications and flow conditions at the time of crossing. This will include using trenchless construction methods to avoid impacting environmentally sensitive areas. The company has coordinated with federal and state agencies throughout the regulatory process to develop appropriate crossing methodologies for all waterbodies.
Williams is proposing to use trenchless crossing methods (conventional bore or HDD) for eight of the waterbody crossings, including both Susquehanna River crossings and the Conestoga River. Implementation of the mitigation measures outlined in Williams’ environmental construction plan and other project-specific plans would help avoid or minimize temporary impacts on surface-water resources.