3:25 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Thursday, March 13 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

– Continuing ORW 21 pump test (north of Sauce Piquante, west of Crawfish Stew)

– Conducting de-watering test on ORWs 4 (northwest of containment berm) and 14 (Oxy 9 well pad)

– Conducting pump maintenance on ORW 30 (north of containment berm, south of La 70)

– Running pressure pre-test on ORW 26 (northwest of containment berm, south of La 70) in preparation for pump test

– Preparing for pressure testing of ORWs 15 and 24 (north of La 70, east of Gumbo St.), and placing discharge holding tanks

– Installing water line from ORW 57 (southeast of Oxy 10 pad) to existing ORW 14 water line

– Conducting sampling of aquifer wells

Containment Berm/Roads/Sinkhole

– Excavating anchor trenches along base of new south containment berm for geotextile fabric placement

– Continuing monthly sinkhole survey
– Repairing washouts on ORW area access west of Bayou Corne