The work at the Potrero Canyon site included implementation of a groundwater treatment system near the rocket-motor production area. In 2002,1,4-dioxane, a newly regulated chemical, was identified in the groundwater, and Lockheed Martin shut down the groundwater treatment system to conduct additional investigations and review remediation alternatives for the site. Information from these investigations was used to develop a Remedial Action Plan (RAP) for the site that Lockheed Martin submitted to the California Department of Toxic Substance Control (DTSC) in 2014. Public review of the Potrero Canyon RAP occurred in 2015 and the plan was approved in 2016. For more information view the Potrero Canyon Fact Sheet.
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