3:30 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Tuesday, March 18 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) and surveying settlement rods

– Conducting de-watering test on ORWs 4 (northwest of containment berm) and 14 (Oxy 9 well pad) and OGRW 1 (Oxy Geismar 2 well pad)

– Conducting pump test on ORWs 26 (northwest of containment berm, south of La 70) and 30 (north of containment berm, south of La 70)

– Installing pump on ORW 15 (north of La 70, east of Gumbo St.),

– Working over ORW 23 (north of La 70, east of Sauce Piquante and Gumbo St intersection)

– Plugging passive vent wells PVW 1 and PVW 5

Containment Berm/Roads/Sinkhole

– Continuing placement of geotextile fabric on new south containment berm

– Preparing for sinkhole profile sampling
– Collecting samples at sinkhole in-flows

– Monitoring industrial water wells