On or about June 19, 2006, over 99,000 barrels of slop oil and untreated oily wastewater overflowed from storage tanks and discharged into a containment area on the CITGO Petroleum Corporation’s Lake Charles Manufacturing Complex. At least 54,000 barrels of slop oil (court finding) and an undetermined amount of oily wastewater flowed out of the containment area and into the waterways, including the Indian Marias, the Calcasieu River, and adjoining water bodies and water ways in the Calcasieu Estuary. Slop oil is a composite of various waste products generated at the CITGO Lake Charles Manufacturing Complex and had accumulated in rainwater storage tanks for years prior to the incident. The volatile components of the slop oil began to evaporate following the discharge and Exceedances of Reportable Quantities of compounds in vapor phase continued through June 27, 2006. The volatile and toxic nature of the slop oil caused oiled areas to be closed to responders and NRDA teams. The discharge affected the following receiving waters: Indian Marias, Calcasieu River, Prien Lake, Moss Lake, Calcasieu Lake, and the Gulf Intracoastal Waterway. During initial oil clean-up activities, the Calcasieu River was closed to all commercial and recreational vessel traffic and the Gulf Intracoastal Waterway was closed from the Ellender Bridge on the west side to the lock on the east side. Prien Lake, Moss Lake, and Lake Calcasieu were closed. Cleanup activities continued for six months.Natural resources within the Calcasieu Estuary were exposed to slop oil as a result of the Incident. The Calcasieu Estuary contains natural resources that provide services to the public. These natural resources and services have been exposed to oil and have experienced injury, including mortality. Natural resources and services potentially injured or lost as a result of the incident and the associated response effort may include, but are not limited to, coastal herbaceous wetlands and associated benthos, beaches, shorelines, aquatic organisms, birds, wildlife, and recreation. A NOI was published in 2014. In 2018, the Trustees completed injury assessment and moved into developing settlement negotiations with CITGO. The Trustees, DOJ and CITGO lodged a CD to settle the case July 17, 2021. In August 2021 the Trustees completed a final settlement with CITGO for $19,446,224 for natural resource damages and unpaid past assessment and restoration planning costs. The Trustees published a draft DARP/EA in October 2021 proposing to use $17.5M of the settlement to implement restoration for marsh, birds, benthic organisms and recreational use. The Trustees completed a MOU to facilitate restoration implementation January 2022 published a Final DARP/EA in February 2022.