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~I~Z ~ • <br />AGZ /aboratorier, Inc. Lab Sample ID : L16?84-0/ <br />30400 Downhill Drive Client Sample ID : Trench /nlel <br />Steamboat Springy, CO 80487 Client Project ID : 2108 <br />(800) 334-5493 ACZ Report ID : RG56475 <br />Homestake Mining Company Date Sampled : !!/5/97 07:00 <br />650 California St. Date Received : / 1/7/97 <br />San Francisco, CA 94108 Dale Reported : !!/14/97 <br />Alan Cox <br />cc: Scott Randall Sample Matrix : Surface Water <br />Metals Anal sis <br />Arxnic, total M206.2 GFAA 0.024 mg/L 0.001 0.005 11/14/97 ss <br />Cadmium,total M200.71CP 0.171 mg/L 0.003 0.02 11/14/97 jaw <br />Copper, total M200.71CP 0.03 B mg/L 0.01 0.05 11/13/97 kr <br />Iron, total M200.71CP 5.14 mg/L 0.01 0.05 11/13/97 kr <br />Lead, total M239.2 GFAA 0.148 mg/L 0.004 0.02 I (/13/97 ss <br />Manganesc, total M200.71CP 3.370 mg/L 0.005 0.03 I (/13/97 kr <br />Mercury total M245.1 CVAA U mg/L 0.0002 0.001 11/10/97 bg <br />Zinc, dissolved M200.71CP 6.04 mg/L 0.01 0.05 11/12/97 jaw <br />Zinc, total M200.71CP 6.81 mg/L 0.01 0.05 11/13/97 kr <br />Metals Pre <br />Total Hot Plate Digestion M3010ICP 11/12/97 cj <br />Total Hot Plate Digestion M3010 GFAA 11/10/97 cj <br />Wet Chemist <br />Conductivity fu)25C M120.1 -Meter 380 umhos/cm I 10 I (/12/97 ss <br />pH (lab) MI50.1-Elecvometric 4.5 units 0.1 OI 11/12/97 ss <br />Residuc, Filterable (TDS)rt ISOC M160.1-Gravimetric 290 mg/L 10 20 11/11/97 sts <br />Residue. Non-Filterable (TSS) QI03-SC MI60.2 - Gravimetric 16 B mg/L 5 20 11/7/97 mh <br />Sulfatc M375.3-Gravimetric 170 mg/L 10 20 11/12/97 ac <br />4E('. ~n/rr. <br />AJO" 2 r '^97 <br />ch~~, , <br />U = Analytc was analyzed for but not dctectcd az the indicaud MDL <br />B = Analyze concentration detected at a value between MDL and PQL <br />PQL =Practical Quantitazion Limit <br />Ty ~~Ja2 <br />Vice President ofOpcrations: Ralph Poulson <br />REPIN701.03.95.0[ Page t of 1 <br />