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ACZ ~ ~ aCZlnbormoriet. Inc. Lab Sample ID: L19261-03 30400 Dawrrhi!! Orive Client Sample I D: 98-7, WG, W8 .Sreamboa[.Sprirrgs, CO 86J87 Client Project ID: 2/08 Bu//dog (800) 334-5493 ACZ Report ID: RG73190 Homestake Mining Company Date Sampled: 7/1/98 08:55 6~0 California St. Dale Received: 7/6/98 San Francisco, CA 94108 Date Reported: 7/29/98 Alan Cox cc: Scott Randall Sample Matrix: Surface Woler Metals A Aluminum, trnal M200.71CP 0.04 B mg/L 0.03 0.2 7/27/98 kr Arsenic, dissoh~ed M206.2 GFAA 0.008 mg/L 0.001 0.005 7/15/98 jb Arsenic, Total M206.2 GFAA 0.008 mg/L 0.001 0.005 7/17/98 jb Cadmium, dissolved M200 7 ICP 0.110 mg/L 0.003 0.02 7/15/98 kr Cadmium, total M11200.7 ICP 0.105 mg/L 0.003 0.02 7/22/98 gg Cupper, dissolved M200.7 ICP U mg/L 0.01 0.05 7/14/98 kr Copper, total h1200.7 ICP U mg/L 0.01 0.05 7/23/98 kr Iron, dissolved M200.71CP U mg/L 0.01 0.05 7/15/98 kr Iron, total M200.7 ICP U mg/L 0.01 0.05 7/27/98 kr Lead, dissolved M200.7 ICP U mg/L 0.04 0.2 7/14/98 kr Lead, total M200.71CP U mg/L 0.04 0.2 7/22/98 gg Manganese, dasolved M200.7 ICP 1.090 mg/L 0.005 0.03 7/15/98 I:r Manganese, mlal M200.71CP 0.992 mg/L 0.005 0.03 7/23/98 kr Mercury, dissolved M245.1 CVAA U mg/L 0.0002 0.001 7/16/98 bg Mercury. «nal M245.1 CVAA U mg/L 0.0002 0.001 7/20/98 bg Zinc, dissolved M200.71CP 19.80 mg/L 0.01 0.05 7/14/98 kr Zinc, total M200.7 ICP 19.40 mg/L 0.01 0.05 7/22/98 gg Metals Pre Total Hol Plate Digestion M3010 ICP 7/24/98 ms Total Hot Plate Digestion M3010 GFAA 7/15/98 ms Wet Conductivity g25C M120.1 -Meter 988 umhos/cm I 10 7/17/98 s1s pH (lab) MI50.1 - ElectromeVic 5.9 units 0.1 0.1 7/17/98 sts Residue. Filerable (TDS) o~I80C MI60.1 -Gravimetric 910 mg/L 10 20 7/8/98 ss/bk Residue.Non-Filterable (TSS)u,103-SC M160.2-Gravimetric B B mg/L 5 20 7/8/98 sts Sulfate A1375.3-Gravimetric 480 mg/L 10 20 7/20/98 cd/cj S. {~C~.(rtn r~R.kX ~ r Vice President o(Operations: Ralph Poulsen REPIN101.03.95.01 Page 1 of 1