Facility

Westlake Sulphur Mines Salt Dome (CURRENTLY UNSTABLE)

Operated by Westlake Chemical CorporationUS · Sulphur, Calcasieu Parish, Louisianamine

ACTIVE CONCERN (2021-2024+): Westlake discovered pressure problems in its Sulphur Mines Salt Dome caverns (particularly Cavern 7) in 2021, causing oil seepage and seismic activity. Louisiana issued an emergency decree; LSU was commissioned to model how long brine/sulfide contamination would take to reach Chicot Aquifer public supply wells. Cavern instability ongoing through at least 2024. Westlake's Lake Charles South chlor-alkali complex is self-supplied from this dome.

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