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cyanide valuers in the range of 6.1-6.2 ppm. The holding <br />time for the Core Lab analysis of wad cyanide was exceeded <br />for all the samples. As you know from review of our monthly <br />INCO summary reports and our weekly pond compliance reports, <br />the on-site analysis of the lower pond, the collection pc~nri, <br />and the post detox samples collected on March 2U showed <br />values below our permit limits. Also, the calculated war! <br />cyanide values are lower than the reported analytte;al <br />values. Generally, the calculated cyanide values have been <br />higher than the analytical values. The elevated value <br />reported by Core Labs are believed to be lab error or sample <br />contami[tation. The analytical results from the following <br />bi-weekly sampl.iny event conducted on March 30-3'1 showed tug <br />elevated cyanide levels. <br />The foll.owiny information is enclosed: the Core Lab <br />analytical reports for the March 19-20 bi-weekly samplr,r;, <br />the Core Lab analytical reports for the March 30-31 process <br />point samples, the calculated cyanide values, the March IN(:O <br />summary, and the March 20 on-site daily analysis of the <br />Lower pond anti the collection pond. <br />If you have any questions, please call. <br />Sincerely, <br /> <br />Alana L. ScotT. <br />environmental Engineer <br />LncloGUre, <br />cc: Anne 13aldrige <br />Ken Kluk.^.dahl <br />t•Iike Young <br />£0' d L00' ON Z5:6 £6.9Z 1,tiW £9££-ZL9-6TL: DI ~~ Q~09 ' N1W 3~11tiH <br />