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ACZ ~ ~ <br />ACZ labarn(ories, /nc. <br />30400 Downhill Drive <br />S[enmban[ Springs, CO 80!87 <br />(800) 334-5493 <br />Lab Sample ID: L18919-0! <br />Client Sample ID: 98-6-DT-/ <br />Client Project ID: <br />ACZ Report ID: RG7/202 <br />Homestake Minim Company Dale Sampled: tf/11/98 /4:00 <br />650 California St. Date Received: 6//2/98 <br />San Francisco, CA 94108 Date Reported: 6/30/98 <br />Alan Cox <br />cc: Scott Randall Sample Matrix: Surface IVo[er <br />Metals Analysis <br />."die.' x'x4.. <br />Aluminum, total M200.7 ICP 0.63 mg/L 0.03 0.2 6/29/98 kr <br />Arsenic, dissolved M206.2 GFAA 0.004 B mg/L 0,001 0.005 6/26/98 fp <br />Arsenic, total M206.2 GFAA 0.003 B mg/L 0,001 0.005 6/27/98 jb <br />Cadmium, dissolved M200.71CP 0.236 mg/L 0.003 0.02 6/17/98 gg <br />Cadmium, total M200.7 ICP 0.223 mg/L 0,003 0.02 6/29/98 Ar <br />Copper, dissolved M200.71CP 0.05 mg/L 0.01 0.05 6/17/98 gg <br />Copper, uxal M200.7 ICP 0.06 ntg/L 0.01 0.05 6/29/98 kr <br />Iron, dissolved M200J ICP U mg/L 0.05 0.3 6/17/98 gg <br />Iron, total M200.7 ICP 0.01 B mg/L 0.01 0.05 6/30/98 kr <br />Lead, dissolved M200.71CP U mg/L 0.04 0.2 6/17/98 gg <br />Lead, total M200.71CP U mg/L 004 0.2 6/29/98 kr <br />Manganese. dissolved M200.7 ICP 25.500 mg/L 0,005 0.03 6/17/98 gg <br />Manganese, meal M200.7 1CP 24.000 mg/L 0,005 0.03 629/98 kr <br />Mercury, dissolved M245.1 CVAA U mg/L 0.0002 0.001 6/25/98 bg <br />Mercury, total M245.1 CVAA U mg/L 0.0002 0.001 6/29/98 bg <br />Zinc, dissolvcd ~ M200.71CP 22.50 mg/L 0.01 0.05 6/17/98 gg <br />Zinc, total M200.7 ICP 20.80 mg/L 0.01 0.05 6/29/98 Ar <br />Total Hol Plata Digestion M30101CP 626/98 ms <br />Total Hot Plate Digestion M3010 GFAA 6/24/98 laa <br />Wet Chemistr <br />t <br />Conductivity a°SC M120.1-Meter 1260 umhos/cm 1 10 6/27/98 sts <br />pH (lab) A1150.1 - Electrometric 5.3 units 0.1 0.1 6/27/98 sts <br />Residue, Filterable (TDS)n180C M160.1-Gravimetric 1150 mg/L 10 20 6/17/98 bk/ej <br />Residue, Non-Filterable (TSS) a 103-SC M160.2 -Gravimetric U mg/L 5 20 6/15/98 cj <br />Sulfate M375.3-Gravimetric 700 mg/L 10 20 6/26/98 bWcd <br />R~,.,~.~ <br />AUG 4 3199 <br />Durango Field Office <br />Dimon of Minerals b Caeola9ll <br />~.4~4-c.cv.+s..a.U-SC tror <br />Vice President of Operations: Ralph Poulsen <br />REPIN101 03.95.01 Page 1 of 1 <br />