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<br />• ~II II~II~II~III~ II~ • <br />PEABODY COAL COMPANY <br />ROCKY MOUNTAIN DIVISION <br />10978 EAST HARVARD AVENUE <br />SUITE 400 <br />DENVER. COLD RADO 80391 <br />19091 997~DB09 <br />March 6, 1984 <br />Ms. Sandra Emrich <br />Reclamation Specialist <br />Mined Land Reclamation <br />423 Centennial Building <br />1313 Sherman Street <br />Denver, Colorado 80203 <br />RECEfVED <br />~~IA.R 31~g~, <br />111NED LAND RECLA~dgilON D1VlSfON <br />Dear Sandy: Colo. Dept. of Natural Resources <br />As was stated on Page 41 of our 1983 Seneca II Mine Annual Hydrology <br />Report, we sent a letter regarding some anomalous cadmium and lead <br />(not mentioned in the annual report) data to Ralph Poulsen of Bookcliffs <br />Laboratories. Mr. Poulsen promptly investigated these anomalous data. <br />The results of his investigation are included in the attached letter.' <br />In summary, it appears that some additional cadmium data experienced <br />the same instrument drift which occured on the samples analyzed November 29 <br />and December 3, 1983. The corrected cadmium values are tabulated <br />on the last page of his letter. Apparently, the anomalous lead data <br />is in fact anomalous but Mr. Poulsen states that the laboratory will <br />continue to investigate the passible causes of the periodically high <br />lead values. <br />If you have any questions about this matter, please don't hesitate <br />to call. <br />Sincerely, <br />`~ ~-~ <br />J. Slade Dingman <br />Hydrogeologist <br />JSD:kt <br />Attachment <br />cc: Mr. Jim Lunan, PCC <br />Mr. Norm Nielsen, PCC <br />Mr. Ralph Poulsen, Bookcliffs Laboratories <br />