3:15 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Wednesday, June 4 work-

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

Air Monitoring/Sub-slab Sampling and Ventilation

- Conducting ventilation system inspections 

ORW/CPT Wells

- Continuing pumping on ORWs 4 (northwest of containment berm), 14 (Oxy 9 well pad), 15 (north of La 70, east of Gumbo Street), 48 (north of containment berm), 54 (west of Bayou Corne, south of La 70), 57 (southeast of Oxy 9 well pad)

- Installing wellheads on PMWs 04, 07, 15, 17, 20

- Installing transducers on PMWs 04 and 07

Containment/ Roads/ Sinkhole/Survey

- Conducting daily berm inspections

3:00 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Monday, June 2 work-

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

Air Monitoring/Sub-slab Sampling and Ventilation

- Conducting ventilation system inspections

ORW/CPT Wells

- Continuing pumping on ORWs 4 (northwest of containment berm), 15 (north of La 70, east of Gumbo Street), 48 (north of containment berm) and 54 (west of Bayou Corne, south of La 70)

- Checking pumps on ORWs 4 and 15

- Developing PMW 15

- Doing surface completion on PMW 04

Containment/ Roads/ Sinkhole/Survey

- Conducting daily berm inspections

- Placing limestone on berm between Oxy 9 and Oxy 10 well pads 

11:00 a.m. NO WAKE ZONE NOTICE, EFFECTIVE IMMEDIATELY

The Police Jury President has declared an Emergency Declaration for ‘No Wake’ Zones due to the high waters for the following areas: 

  • Bayou Corne
  • Pierre Part Bay
  • Bayou Drive Elevation Bridge
  • Belle River
  • 4-Mile Bayou
  • Bayou Gannevail
  • Bayou Crab
  • Bayou Tranquille
  • Lake Verret Park Estates Canal
  • T-Bayou
  • Pierre Part Bay along East Drive
  • Grand Bayou

10:50 a.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Friday, May 29 work-

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

Air Monitoring/Sub-slab Sampling and Ventilation

- Conducting ventilation system inspections

ORW/CPT Wells

- Continuing pumping on ORWs 4 (northwest of containment berm), 15 (north of La 70, east of Gumbo Street), 48 (north of containment berm) and 54 (west of Bayou Corne, south of La 70)

- Changing pump on ORW 14 (Oxy 9 well pad)

- Drilling and coring PMW 15

- Doing surface completion on PMW 04

- Installing CPT 139 (north of La 70, east of Gumbo Street)

Containment/ Roads/ Sinkhole/Survey

- Conducting daily berm inspections

- Placing rock at road entrance to ORW 57 (southeast of Oxy 9 well pad)

- Placing rock over culverts on access road to ORW area west of Bayou Corne, south of La 70

3:50 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity
Thursday, May 28 work-
Sinkhole Activity Code 1 – indicating work is allowed on sinkhole and within containment berms. Seismic monitoring indicates low levels of subsurface activity near sinkhole/Oxy 3.

Air Monitoring/Sub-slab Sampling and Ventilation
– Conducting ventilation system inspections

ORW/CPT Wells
– Continuing pumping on ORWs 4 (northwest of containment berm), 14 (Oxy 9 well pad), 15 (north of La 70, east of Gumbo Street), 48 (north of containment berm) and 54 (west of Bayou Corne, south of La 70)
– Setting up to drill PMW 15
– Installing CPT 139 (north of La 70, east of Gumbo Street)

Containment/ Roads/ Sinkhole/Survey
– Conducting daily berm inspections

9:40 a.m. Update

Message from Texas Brine:

As a result of the recent, heavy rainfall, the abandoned section of the original south berm was overtopped today.  The new south berm was not breached or overtopped at any point.  Even with heavy rains, approximately 3-4’ of freeboard on the new south berm remains and the waters of the sinkhole are contained as they have been since the initial completion of the containment system.

Because of the expected gradual expansion of the sinkhole the decision was made over five months ago to expand the containment system to the south and abandon the section referred to as the “old” south berm.   After initial containment of the new south berm was achieved, Texas Brine ceased maintenance operations on the old south berm.  On January 17th, 2014, Texas Brine contractors added a final layer of material to the berm and no maintenance activity has been performed since.

Following the completion of the new 3,900 linear foot earthen south berm, plans were being drawn up to initiate a cut-through on the old south berm in order to connect the bodies of water between the old south berm and the new south berm.  Not surprisingly, the heavy rains resulted in a natural overtopping, which created a pathway between the two bodies of water inside of the greater containment structure.

Texas Brine continues to monitor surface water and groundwater as we have since August 4th 2012.  With over 3,500 samples taken to date there are no indications of adverse water quality impacts to area surface water outside of the sinkhole containment area.  Plans were already in place to adjust the water sampling locations, within the containment system given the new south berm, prior to today’s overtopping. 

2:25 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Tuesday, May 27 work-

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

Air Monitoring/Sub-slab Sampling and Ventilation

- Conducting ventilation system inspections 

ORW/CPT Wells

- Continuing pumping on ORWs 4 (northwest of containment berm), 14 (Oxy 9 well pad), 15 (north of La 70, east of Gumbo Street), 48 (north of containment berm) and 54 (west of Bayou Corne, south of La 70)

- Installing CPT 138

Containment/ Roads/ Sinkhole/Survey

- Conducting daily berm inspections

- Adding limestone to thin areas on new south containment berm

- Pulling old boom and absorbent pads from sinkhole

1:45 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Friday, May 23 work-

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

Air Monitoring/Sub-slab Sampling and Ventilation

- Conducting ventilation system inspections

ORW/CPT Wells

- Continuing pumping on ORWs 14 (Oxy 9 well pad), 15 (north of La 70, east of Gumbo Street), 48 (north of containment berm) and 54 (west of Bayou Corne, south of La 70)

- Grouting PMW 04 and completing PMW 07

- Installing CPT 140 (north of La 70, east of Gumbo St)

Containment/ Roads/ Sinkhole/Survey

- Conducting daily berm inspections