9:25 p.m. Advisory from the Office of Conservation

The Office of Conservation, in consultation with Assumption Parish Incident Command, is advising the public that Texas Brine is preparing to re-route the western wall of the sinkhole containment berm further west, and extend the northern and southern berm walls accordingly, due to ongoing surface subsidence in a portion of the existing western berm wall. While the sinkhole’s western boundary remains more than 100 feet away from the existing western berm wall, ongoing filling of the failed Texas Brine Oxy 3 cavern and compaction of the disturbed rock zone surrounding the sinkhole have created an area of surface subsidence outside the sinkhole boundary. The current western wall siting was chosen in order to make use of an already existing well access road to more quickly provide containment around the sinkhole, and Texas Brine will continue to use fill material to maintain the existing western wall until containment is established with the new route. In addition, the currently existing berm will be partially maintained following construction of the new containment route in order to provide access to the vent wells and monitoring wells installed along the original western berm. The Office of Conservation and Assumption Parish Incident Command are continuing to monitor developments in the area to ensure all necessary steps are taken to protect public safety and the environment.