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~ICZ- • <br />`~ "~ <br />ACZ Laboralarirs, lnc. <br />30100 Dowrtbill Drive <br />Steamboat Springs, CO 80087 <br />(800) 334-509J <br />Lab Sample ID: L18987-O1 <br />Client Sample ID: DT-1 <br />Client Project [D; 1 /08 <br />ACZ Report ID: RG7/357 <br />Homestake Mining Company Date Sampled; Q/1 S/98 14:10 <br />650 California St. Date Received; 6/17/98 <br />San Francisco, CA 94108 Date Reported; 7/7/98 <br />Alan Cox <br />ll ri ~ ` 1 0 19~ <br />RECE11lED <br />cc: Scott Randa . Sample Matrix; Surfa ce War er <br />Metals Anal sis <br />Aluminum. total M200.71CP 0.85 tttg/L 0.03 0.2 7/IAB tr <br />Arsenic, dissoived M206.2 GFM 0.004 B tng/L 0.001 O.W6 (J17A8 jb <br />Arsenic, total M206.2 GFM 0.004 B mg/L 0.001 0.005 7/198 jb <br />Cadmium. dissolved M200.7 ICP 0.237 r1tgQ. O.OOI 0.02 62398 tr <br />Cadmium, total M200.7 ICP 0.224 mg/L 0.003 0.02 7/IAB tr <br />Copper, dissolved M200.7 ICP 0.12 tttg/L 0.01 0.05 62398 tr <br />Copper, total M200.71CP 0.11 rng/L 0.01 0.05 7/IAB tr <br />Iron, dissolved M200.7 ICP U rng/L 0.01 0.05 6/1398 tr <br />Iron, total M200.7 ICP 0.04 B mg/L 0.01 0.05 7298 tr <br />Lead. dissolved M200.7 ICP 0.04 B mglL 0.04 0.2 62398 tr <br />Lead. total M200.71CP 0.05 B mg/L 0.04 0.2 7/198 tr <br />Manganese. dissolved M200.7 ICP 26.000 rngll. 0.005 0.03 62398 tr <br />Manganese. total M200.71CP 24.100 mp/L 0.005 0.03 7/198 tr <br />Mercury. dissolved M245.1 CVM U mgA. 0.0002 0.001 62598 bg <br />Mercury. total M245.1 CVM U mg/L 0.0002 0.001 CJ19A6 bg <br />Zinc, dissolved M200.7 ICP 22.10 rag/L 0.01 0.05 62398 tr <br />Zinc. total M200.71CP 20.60 mg/L 0.01 0.05 7/198 tr <br />Metals Pre <br /> r <br />Total Hot Plate Digestion M30101CP 6/3098 ms <br />Total Hot Plate Digestion MJ010 GFM 6!7098 ms <br />Wet Chemist <br />Conductivity n2iC M120.1-Meter 723 umhos/cm 1 !0 6/1&98 sls <br />pH (lab) MI50.1-Elecvomevic 5.0 rmits 0.1 0.1 NI&98 sts <br />Residue. Filterable (TDS)©180C M160.1-Grarirrtetric 610 m8/L 10 20 G/1JA8 cj <br />Residue.Non-Filterable (TSS)©103•SC M160.2-Gravimevic U tttg/l. 5 20 62298 bk <br />Sulfate M375.3-Gravimetric 330 mg/L 10 20 62698 sled <br />~ i <br />iU ~ Analyse was analyzed for but rat detected al the indicated MDL <br />~B' Analyze concenvation dclected at a value between MDL and PQL ~ <br />;PQL a Practical Quantization Limit <br />~~/ lrrs/t /~~ <br />Via PresidrntofOperuions: Ralph Poulson <br />REPINtOt.03.95.01 Page t of 7 <br />