Sulphur Mines Investigation

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This page was last updated on 07/21/2024 at 7:08:06 PM.

Work Plans

Westlake's Incident Action Plan

Work Permit and Plan for Fiber Optic Cable Installation into Cavern 7 - Approved May 23, 2024 

Informal Memo to LDENR - Construction of Core Wells Proximal to Cavern 7 - Received June 3, 2024

• Sulphur Brine Field Containment Levee Plan - received November 27, 2023
• Sulphur Brine Field Containment Levee Plan (revised) - Received March 1, 2024
• Sulphur Brine Field Containment Levee Plan (revised) - Received April 19, 2024

• Surface Seismic Monitoring Plan (MEQ) - Received February 8, 2023
• Proposal for Revised Seismic Station Locations (MEQ) - Received March 30, 2023
• Approval for: Proposal for Revised Seismic Station Locations (LNDR) - Issued March 31, 2023
• Draft Plan to Monitor Seismic Activity on and Around the Sulphur Mines Dome, Louisiana (Lonquist) - Received June 13, 2023
• Recommentdation for Microseismic Borehole Monitoring at Sulphur Mines Dome (MEQ) - Received August 11, 2023
• Recommendation for Modification of the Surface Microseismic Monitoring at Sulfur Mines Salt Dome (MEQ) - Received August 24, 2023
• Approval for: Surface Seismic Upgrade Proposal (LDNR) - Issued August 24, 2023
• Update on the Surface Miroseismic Monitoring at Sulphur Mines Dome: Broadband Seismometer Installation (MEQ) - Received September 19, 2023
• Plan to Monitor Microseismicity at Sulphur Mines Dome: Modifications to the Broadband Seismic Array (MEQ) - Received November 15, 2023

• Groundwater and Surface Water Investigation Work Plan (ERM) - Received February 20, 2023
• USDW Evaluation and Monitoring Well Installation Plan (ERM) - Received May 19, 2023
• REVISED Monitoring Well Installation Plan (ERM) - Received October 18, 2023
• Response to Westlake's Monitoring Well Plan (LDNR) - Issued October 23, 2023
• Plan to Collect and Sample Gas over Bubble Sites - Received November 27, 2023
• Plan for Alternate Source of Water - Received December 27, 2023
• Protection and Remediation Plan of Chicot-Supplied Public Freshwater - Received January 23, 2024

• Proposed "De-Pressure" Plan for Sulphur Mines Cavern No. 6 (ERM) - Received September 11, 2023
• Proposed Snubbing & Cleanout Plan for Sulphur Mines Cavern No. 6 (ERM) - Received September 25, 2023

• Plan for Enhanced Subsidence Monitoring - Received February 20, 2023
• Plan for Enhanced Subsidence Monitoring (revised) - Received March 13, 2023
• Proposed New InSAR Reflectors Map - Received November 27, 2023
• Plan to Monitor Ground Deformation at Sulphur Mines Dome - Received December 27, 2023
• Deformation Monitoring Plan: Updated Layout (Lonquist) - Received February 12, 2024
• Deformation Monitoring Plan: Updated Layout Proposal (Lonquist) - Received April 8, 2024