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<br />environmental consequences are adverse or not. The XRF method as a screening technique is <br />inappropriate, in my opinion, for examining sites like this because it does not identify the <br />mineralogical sources of the metals, and without that knowledge one cannot evaluate the <br />potential for environmental consequences. More study about the mineralogy of the tails and the <br />mobility of the metals should be conducted before making predictive assessments about the <br />nature of the tails or their potential environmental consequences. Whether mobile or not, the <br />sampled tails represent elevated metals concentrations relative to average earth compositions. <br />Thank you for keeping us informed, and I will let you know if we receive an application for re- <br />mining at this site. <br />Sincerely, <br />%~ <br />Harry H. Posey <br />CERCLA Coordinator <br />cc: Bruce Humphries <br />Jim Pendleton <br />