Remedial Investigation and Feasibility Study (RI/FS)
  "The purpose of the RI/FS is to investigate the nature and extent of contamination at the Molycorp, Inc., Site (the "Site"), and develop and evaluate potential remedial alternatives. The RI and FS are interactive and may be conducted concurrently so that the data collected in the RI influences the development of remedial alternatives in the FS, which in turn affects the data needs and the scope of treatability studies." — Statement of Work for Remedial Investiagtion (RI) and Feasibiality Study (FS)

The RI/FS was initiated by an Administrative Order on Consent (AOC) entered into by Molycorp and the EPA. This agreement was signed by Molycorp in order to avoid charges being filed against it by the EPA.

More Info:
  • Administrative Order on Consent for Remedial Investigation/ Feasibility Study (AOC):
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         - Adobe Acrobat (PDF)
         - MS Word
  • Statement of Work for Remedial Investigation (RI) and Feasibility Study (FS) (SOW)
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         - Adobe Acrobat (PDF)
         - MS Word
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