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May 2019 West Hackberry Subsidence Analysis

Moriarty, Dylan; Lord, Anna S.

Subsidence monitoring is a crucial component to understanding cavern integrity of salt storage caverns. This report looks at the historical and current subsidence monitoring program and includes interpretation of the data from the West Hackberry Strategic Petroleum Reserve and LA Storage sites. Given data from current level-and-rod surveys, GPS, and tiltmeter, we do not believe there are any structural integrity issues at the West Hackberry DOE and LA Storage sites.