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EPA and Atlantic Richfield Company (AR) signed an Administrative Order on Consent (AOC) to conduct the Remedial Investigation/Feasibility Study (RI/FS) and was effective on July 1, 2017.   The Remedial Investigation began soon after a site visit and scoping took place with EPA, Atlantic Richfield and the Pueblo of Laguna Environmental and Natural Resources Department (POL-ENRD) present at the Site on August 2-3, 2017. Since then, several site documents and field activities that comprise or support the RI/FS Workplan were developed by AR and approved by EPA with POL-ENRD oversight. The goal of the RI/FS is to determine the nature and extent of contaminants left on-site so that a remedy can be selected to remediate the site in areas that present an unacceptable risk to human health or the environment.

Presently, a Gamma Transect Survey, Field Sampling Plan effort is taking place at the Site. Activities associated with this effort began the week of August 19, 2019 and are expected to take a month to six weeks to complete.The objectives for this effort include identifying areas of greater interest, based on the gamma levels detected from contaminants left-on site, using ground level and aerial technology. Information collected will eventually assist in determining what is natural (Naturally Occurring Radioactive Material) from what may be unnatural, (Technilogically Enhanced Naturally Occurring Radioactive Material) due to past mining activities that took place at the Site.

Atlantic Richfield is also collecting air quality data in and around the site to determine if current site conditions could present an unnacceptable risk to individuals living near the former mine site. EPA expects data to be available in the near future to determine if any interim actiions are required in relation to protecting human health near and around the former mine site.


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