12:15 p.m. Update from the Office of Conservation

Bayou Corne/Grand Bayou Response Activity

Wednesday, Sept. 11 work-

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

Sub-slab Sampling and Ventilation

– Continuing vapor testing of ventilation systems

– Following up with repairs to sub-slab probe at 134 Sportsmans Drive

– Continuing to retrofit new profile blowers on ventilation system at 1438 Sauce Piquante

ORW/CPT Wells

– Removing water and running pressure logs on ORWs 15 (north of La. 70, west of Texas Brine facility) and 16 (south of La. 70, northwest of containment berm)

– Grouting aquifer monitoring well MRAA 5M (mid-aquifer), and installing MRAA 5S (shallow aquifer) – south of containment berm

– Installing DPVE (dual-phase vacuum extraction) well 47-3 on Maurice Rd. (ORW work road west of containment berm) 

– Installing CPT 89 (west of Bayou Corne, south of La. 70)

– Installing MIHPTs 46 and 51 (on Jambalaya Street)

– Sampling aquifer monitoring wells

Containment Berm/Roads/Sinkhole

– Clearing trees and beginning construction of new north access road and pad