Settling RCRA and EPCRA defendants in relation to violations at their phosphoric acid and fertilizer manufacturing plant located near Rock Springs, Wyoming, must implement compliance projects at the facility; comply with specified requirements for management of wastes or other materials at the facility and in the facility's phosphogypsum stack system; comply with specified requirements for the eventual closure and long-term care of the facility and provide financial assurance to cover the estimated cost of such obligations; continue monitoring the groundwater at and near the facility pursuant to an existing state order and, if needed in the future based on monitoring, implement corrective action to address any groundwater contamination; revise the annual toxic chemical release inventory reporting forms they submitted under EPCRA for years 2004-2013 to include estimates of compounds that previously were not included in those reports; and pay a civil penalty of $775,000.