3:00 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Thursday, Dec. 19 work-

Sinkhole Activity Code 3 – indicating no work is allowed directly on sinkhole or within containment berms. Seismic monitoring indicates further increase in levels of subsurface activity near sinkhole/Oxy 3 – state and parish will continue to closely observe seismic activity to advise of any sudden changes.

Air Monitoring/Sub-slab Sampling and Ventilation

– Conducting ventilation system inspections

ORW/CPT Wells

– Removing water from ORWs 1, 2, 22 (north of La 70, west of Texas Brine facility), and 39 (north of containment berm)

– Installing pump at ORWs 15 and 24 (north of La 70, west of Texas Brine facility)

– De-pressurizing ORW 54 (north of La 70, west of Texas Brine facility) to change out wellhead

Containment Berm/Roads/Sinkhole

– Continuing hydraulic head tests of aquifer monitoring wells

– Recording sinkhole water levels