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<br />ACZ <br /> <br />ACZ Gaborarorres. lnc. Lab Sample ID: L13958-01 <br />?773 Downhi!! Dnve Client Sample ID: WGL Weir <br />Sreamboar Springs, CO 80x87 Client Project [D: Bu((dog 7-l3-99 <br />/snn/ 334-s r93 ACZ Report ID: 2698/69 <br />Homestake Mining Co./Pitch Date Sampled: 7//3/99 /l:40 <br />P.O. Box 40 Date Received: 7//6/99 <br />Sargents, CO 81248 Date Repotted: 8/4/99 <br />Vets Kelso <br />cc: Alan Cox Sample Matrix: Surface Water <br />Metals Analysis <br /> ~ <br />x <br />Aluminum. total M200.71CP U mg/L 0.03 0.2 7/30/99 kr <br />Arsenic, dissolved M206.2 GFAA 0.015 mg/L 0.001 0.005 728/99 jb <br />Arsenic, total M206.2 GFAA 0.014 mg/L 0.001 0.005 7!31/'99 jb <br />Cadmium, dissolved M200.71CP 0.015 B mg/L 0.003 0.02 726/99 gg <br />Cndmium, total M200.7 ICP 0.014 B mg/L 0.003 0.02 7/30/99 gg <br />Copper, dissolved M200.71CP U mg/L 0.01 0.05 72N99 gg <br />Capper, total M200.71CP U mg/L 0.01 0.05 7/30/99 gg <br />Iran. dissolved M200.7 ICP U mg/L 0.01 0.05 726/99 gg <br />Iron, total M200.7 ICP U mg/L 0.01 0.05 7/30/99 kr <br />Lead, dissolved M200.71CP U mg/L 0.04 0.2 726!99 gg <br />Lead, total M200.7 ICP U mg/L 0.04 0.2 7/30/99 kr <br />Manganese. dissolved M200.71CP U mg/L 0.005 0.03 726/99 gg <br />hlaneanese. total M200.7 ICP U mg/L 0.005 0.03 7!30/99 gg <br />Mercury. dissolved M245.1 CVAA U mg/L 0.001 0.005 729/99 t~ <br />Mercury, total M245.1 CVAA U mg/L. 0.0002 0.001 7/31/99 ms <br />Zinc. dissolved M200.7 ICP 3.20 mg/L 0.01 0.05 726/99 gg <br />Zinc. total M200.71CP 2.93 mg/L 0.01 0.05 7/30/99 gg <br />Metals <br />Total Dieestion M200.2 GFAA <br />Total Hut Plate Dieestion M200.2 ICP <br />729/99 sLs <br />7(29/99 sts <br />We[ <br />Conductivin~ ~ir2~C M120.1 - Metcr 380 umhos/cm 1 10 7/19/99 mh <br />pH flab) MI501-Electrometric 6.1 units 0.1 0.1 7/19/99 mh <br />Residue. Filterable ITDS) fat I80C M160.1 -Gravimetric 300 mg/L 10 20 7/19/99 ss/mh <br />Residue. Nnn-Filterable lTSS)Q103-SC M160.2-Gravimevic U mg/L 5 20 7/19/99 ss/mh <br />Sulfate M375.3-Gravimevic 150 mg/L 10 20 7/17/99 cd <br />Received <br />AUG 1 71999 <br />U = Analyze wu analyzed for but not detected at the indicated MDL <br />B = Analyze concentration detected at a value between MDL and PQL <br />PQL =Practical Quantization Limit <br />Durango Field Office <br />ONlalon of Minerals 8 Geology <br />/S ~~11~11 <br />Vice President ofOpera[ions: Ralph Poulson <br />REPIN10t.03.95.01 Page 1 of f <br />