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BATTLE MOUNTAIN RESOURCES, INC -SAN LUIS <br />BI-WEEKLY WATER SAMPLING -SEPTEMBER 26, 27, 28, 1995 <br />CALCULATED CYANIDE VALUES <br /> ANALYTICAL METALS AND CYANIDE VALUES (mg/L) <br />SAMPLE SAMPLE CYANIDE <br />DATE LOCATION Cu Zn Mn Ni WAD TOTAL <br />09/28 PRE-DETOX 71 <0.01 NA NA 140 165 <br />09/28 POST-DETOX 1.21 <0.01 NA NA 0.04 0.06 <br />09/28 COLLECTION POND/UNDERDRAIN 1.14 <0.01 NA NA 0.64 1.33 <br />09/28 TAILINGS POND 0.75 <0.01 NA NA 0.05 0.09 <br />CALCULATED CYANIDE VALUES (mg/L) <br />CN-WAD MPFCN <br />MIN MAX MIN MAX <br />58.58 88.75 51.25 81.43 <br />1.00 1.51 0.00 0.00 <br />0.94 1.43 0.00 0.00 <br />0.62 0.94 0.00 0.00 <br />MPFCN=MAXIMUM POTENTIAL FREE CYANIDE <br />NA=NOT ANALYZED <br />CALCULATIONS BASED ON METHODS OUTLINED IN CYANIDE CHEMISTRY REPORT BY ASCI, MAY 1992 <br />