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' : - i4CZ <br />ACZ Iabarmaries, Inc. <br />30400 Downhill Drive <br />S(eamboN Springs, CO 80.187 <br />(800) 334-5493 <br />Lab Sample ID: L21434-02 <br />Client Sample ID: 12-98 WCL Weir <br />Client Project ID: 2262 <br />ACZ Report ID: RC843O6 <br />Homestake Mining Company Dale Sampled : 12/4/9807:45 <br />650 California St. Date Received : /2/8/98 <br />San Francisco, CA 94108 Date Reported : /2/3)/98 <br />Alan Cox <br />cc: Scott Randall Sample Ma[rix : Cror(nd Wafer <br />Field Dafa <br />7.iCkS~ ~t~'; ~;:. <br />Conductivity (Field) Field Meuurement 522 umhos/cm 12/4/98 jr <br />pH (Field) Field Measurement 6.3 units 12/4/98 jr <br />Temperature (Field) Field Measurement L I C 12/4/98 jr <br />Metals Analysts <br /> <br />Aluminum, total M200.7 ICP U mg/L 0.03 0.2 12/17/98 kr <br />Arsenic, dissolved A1206.2 GFAA 0.011 mg/L 0.001 0.005 12/8/98 jb <br />Arsenic, total M206.2 GFAA 0.010 mg/L 0.001 0.005 12/15/98 jb <br />Cadmium, dissolved A1200.7 ICP 0.027 mg/L 0.003 0.02 12/21/98 gg <br />Cadmium total M200.7 ICP 0.026 mg/L 0.003 0.02 12/22/96 kr <br />Copper, dissolved M200.7 ICP U mg/L 0.01 0.05 12/21/98 gg <br />Copper, total M200.7 ICP U ntg/L 0.01 0.05 12/17/98 kr <br />Iron, dissolved M200.71CP U mg/L 0.01 0.05 12/18/98 gg <br />Iron. total M20071CP 0.02 B mg/L 0.01 0.05 12/17/98 kr <br />Lead, dissolved M200 7 ICP U mg/L 0.04 0.2 12/18/98 gg <br />Lead, total hf200.7 ICP U mg/L 0.04 0.2 12/17/98 kr <br />Manganese. dissoh~ed M200.71CP 0.008 B mg/L 0.005 0.03 1281/96 gg <br />Manganese. tool M200.71CP 0.005 B mg/L 0.005 003 12/17/98 kr <br />Mercury, dissolved M245.1 CVAA U mg/L. 0.0002 0.001 12/16/98 bg <br />Mercury, total M245.1 CVAA U mg/L 0.0002 0.001 12/14/98 bg <br />Zinc, dissoh~ed M200.71CP 7 17 mg/L 0.01 0.05 12/21/98 gg <br />Zmc, total M?00.7 ICP 6.81 mg/L 0.01 0.05 12/17/98 kr <br />Metals Prep <br /> <br />Total Hot Plme Digestion M3010 ICP 12/16/98 ms <br />Total Hot Plate Digestion M3010 GFAA 12/15/98 laa <br />mistr <br />Wet Che <br />_ <br />trlill TAaf~r.. <br />~ <br />Conductivity g25C M 120.1 -Meter 591 u mhos/cm I I O 12/12/98 sts <br />pH (lab) M150.1 - Electrometric 5.9 units 0 I 0.1 12/10/98 nth <br />Residue, Fihernblc lTDS)(a?ISOC M160.1-Gravimetric 440 mg/L 10 20 12/9/98 cd <br />Residue. Non-Filternble (TSS) n103-SC M 160.2 -Gravimetric U mg/L 5 20 12/9/98 ed <br />Sulfate M375.3-Gravimetric 250 mg/L 10 20 12/8/98 cd/as <br />~Unlrrr(lTi[te`:CDlrfl~(fikr~v!<~i71~~tE}~ ~~`By...t <br />U = Analyse was analyzed (or but not detected al the indicated MDL <br />B =Analyse concentration detected at a value between MDL and PQL <br />PQI-= Prnctical Quanlitation Limit <br />S L-~a,l,~..~.c~.-Q -f~, <br />Vice President of Operations: Ralph Poulson <br />REPIN101.03 95.01 Page 1 of 1 <br />