9:30 a.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Wednesday, Dec. 12 work-

Sinkhole Activity Code 1 ā€“ indicating work is allowed on sinkhole and containment berm, seismic monitoring indicates low levels of sub-surface activity near sinkhole/Oxy 3

Air Monitoring/Sub-slab Sampling and Ventilation

– Conducting ventilation system inspections and air monitoring

ORW/CPT Wells

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

– Removing water from ORWs 16 (west of containment berm) and 32 (northwest of containment berm)

– Pressure monitoring of geoprobe pressure wells

Containment/ Roads/ Sinkhole

– Surveying containment berm settlement plates

– Conducting sinkhole depth survey