2:45 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Friday, Aug. 30 work-

Sinkhole Activity Code 3 – highest level – though seismic activity has not been elevated since last week’s event, work within berms/directly on sinkhole is being suspended as a precaution while new safety protocols based on observations from the most recent slough-in are finalized

Sub-slab Sampling and Ventilation

– Continuing ambient and in-stack gas monitoring on sub-slab ventilation systems

– Ending pressure monitoring and removing monitor from 1428A Jambalaya

– Conducting sub-slab vapor monitoring at 134 Sportsman Dr.

ORW/CPT Wells

– Connecting ORWs 43 and 48 to flow line to flare (south of La. 70, west of Texas Brine facility)

– Grouting aquifer monitoring well MRAA 4S (shallow), and developing MRAA 4M (mid-aquifer) – north of containment berm

– Installing master valve on ORW 46 (east of Bayou Corne, south of La. 70)

– Logging Geophone 1 well (3,000-ft well on Oxy 1 well pad)

– Logging Oxy 3A and running bottom tag (work done from Oxy 9 well pad)

Containment Berm/Roads/Sinkhole

– Work on berms/sinkhole suspended pending approval of new safety protocol

4:30 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Thursday, Aug. 29 work-

Sinkhole Activity Code 3 – highest level – though seismic activity has not been elevated since last week’s event, work within berms/directly on sinkhole is being suspended as a precaution while new safety protocols based on observations from the most recent slough-in are finalized

Sub-slab Sampling and Ventilation

– Continuing pressure monitoring at 174 Crawfish Stew

– Ending pressure monitoring and removing monitor from 1408 Sauce Piquante

– Continuing gas monitoring on sub-slab ports at 134 Sportsman Dr., 1402 Jambalaya, 1457 Sauce Piquante, and 1422 Sauce Piquante

– Continuing monitoring of ventilation systems at 1465 Sauce Piquante and 116 Crawfish Stew

ORW/CPT Wells

– Connecting ORWs 43 and 48 to flare (south of La. 70, west of Texas Brine facility)

– Setting up to begin installation of ORW 46 (east of Bayou Corne, south of La. 70)

– Removing water from ORW 3 (west of containment Bayou Corne, south of La. 70)

– Installing CPT 23 (Oxy 3 access road)

– Installing shallow aquifer monitoring well MRAA 4S (north of containment berm)

– Testing dual-phase vacuum extraction system for removal of gas from shallow sands

Containment Berm/Roads/Sinkhole

– Measuring water levels inside containment berm and inspecting berm integrity

2:00 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Wednesday, Aug. 28 work-

Sinkhole Activity Code 3 – highest level – though seismic activity has not been elevated since last week’s event, work within berms/directly on sinkhole is being suspended as a precaution while new safety protocols based on observations from the most recent slough-in are finalized

Sub-slab Sampling and Ventilation

– Installing pressure sub-slab pressure monitoring at 174 Crawfish Stew

– Ending sub-slab pressure monitoring at 1408 Sauce Piquante

– Conducting ambient and in-stack monitoring of all installed sub-slab ventilation systems

ORW/CPT Wells

– Testing ORW 42 (north of La. 70, west of Texas Brine facility)

– Grouting ORW 48 (south of La. 70, west of Texas Brine facility)

– Setting up to begin installation of ORW 46 (east of Bayou Corne, south of La. 70)

– Removing water from ORWs 17,18,19 (west of containment berm)

– Installing CPT 24 (Oxy 1 well pad)

– Testing dual-phase vacuum extraction system for removal of gas from shallow sands

– Sampling aquifer monitoring wells

Containment Berm/Roads/Sinkhole

– Work within berm/directly on sinkhole suspended due to recent sloughing along east side between access points at Oxy 3 well pad and north berm work pad, pending new safety protocols being finalized

5:40 p.m. Update

Update on last night’s activity on Crawfish Stew Street…

The MiHPT grout hose busted during grouting several times; therefore, a plan was put into place to perform a conventional grouting. The conventional grouting technique was completed by 9:30 p.m. last night. Observation by state & parish agencies showed no leaks at that time. This was reconfirmed this morning.

2:00 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Tuesday, Aug. 27 work-

Sinkhole Activity Code 1 – lowest level, indicating little seismic activity detected near sinkhole/Oxy 3

Sub-slab Sampling and Ventilation

– Conducting final round of gas monitoring at 174 Crawfish Stew

– Installing sub-slab sampling ports at 134 Sportsman Drive, 1422 Jambalaya Street, 1457 Sauce Piquante, and 102 Bream

ORW/CPT Wells

– Connecting ORW 42 to flare (north of La. 70, west of Texas Brine facility)

– Drilling ORW 48 (south of La. 70, west of Texas Brine facility)

– Installing aquifer monitoring well MRAA 04M (south of La. 70, west of Texas Brine facility)

– Installing CPT 114W (north of community)

Containment Berm/Roads/Sinkhole

– Work within berm/directly on sinkhole suspended due to recent sloughing along east side between access points at Oxy 3 well pad and north berm work pad

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

Bayou Corne/Grand Bayou Response Activity

Monday, Aug. 26 work-

Sinkhole Activity Code 3 – highest alert level, no work allowed on sinkhole or within containment berms – though no elevated levels of seismic activity have been detected since last week’s event, Code 3 set today due to sinking of trees this morning near area of last week’s sloughing of sinkhole along eastern edge – at present, today’s sinking is believed to be related to last week’s shift, but the situation is being monitored closely for potential further development.

Sub-slab Sampling and Ventilation

– Conducting final round of under-slab vapor monitoring at 174 Crawfish Stew

– Installing additional pressure monitor at 174 Crawfish Stew

– Conducting ambient and in-stack monitoring of ventilation systems of all five installed systems

ORW/CPT Wells

– Connecting ORW 42 to flare (north of La. 70, west of Texas Brine facility)

– Drilling ORW 48 (south of La. 70, west of Texas Brine facility)

– Installing aquifer monitoring well MRAA 04M (south of La. 70, west of Texas Brine facility), collecting soil samples for analysis

– Installing CPT 30 (Oxy 1 well pad) and 115W (northeast of community)

Containment Berm/Roads/Sinkhole

– Work within berm/directly on sinkhole suspended due to Code 3 status