3:55 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Tuesday, Jan. 21 work-

Sinkhole Activity Code 1 – indicating work is allowed on sinkhole and within containment berms. Seismic monitoring indicates continued low levels of subsurface activity near sinkhole/Oxy 3.

Air Monitoring/Sub-slab Sampling and Ventilation

– Conducting ventilation system inspections

ORW/CPT Wells

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

– Monitoring bubble site 56 (Bayou Corne, north of La 70)

– Completing passive vent wells PVW-01 (west of Bayou Corne, south of La. 70) and PVW-03 (Sportsman’s Landing)

– Re-working wellhead on DPVE 37 (east of Sportsman’s Landing, south of La. 70) for conversion to passive venting

– Preparing to clear path from Oxy 9 well pad to planned ORW 57 site

– Sampling water removed from ORWs

 Containment Berm/Roads/Sinkhole

– Continuing to haul and place sand for construction of new southern berm route

– Continuing to haul and place sand for construction of access road for Oxy 9 well pad to ORW-57 (southwest of containment berm, east of Bayou Corne)

– Measuring aquifer monitoring well water levels

– Collecting water samples from sinkhole in-flow sites