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<br />ACZ <br /> <br />ACZ Labarntorirt, /nc. <br />2773 Downhill Drive <br />Steamboat Springs, CO 80487 <br />(800) 334-5493 <br />Homestake Mining Co./Pitch <br />P.O. Box 40 <br />Sareents. CO 81248 <br />Vem Kelso <br />cc: Scott Randall, Alan Cox, Bradley E. Ellis <br />Lab Sample ID: <br />Client Sample ID: <br />Client Project [D: <br />ACZ Report ID: <br />Date Sampled: <br />Date Received: <br />Date Reported: <br />Sample Ma[rix: Surjoce Water <br />L23070-01 <br />WGL Weir <br />Bulldog 5-I1-99 <br />RC93261 <br />5/10/99 1 !: 20 <br />5/13/99 <br />5/18/99 <br />Aluminum. total M200.71CP 2.71 mg/L 0.03 0.2 SRI/99 kr/jb <br />Arsenic. dissolved M206.2 GFAA U mg/L 0.005 0.03 5/24/99 jl <br />Arsenic, trim! M206.2 GFAA 0.27 mg/L 0.01 0.05 5/24/99 jb <br />Cadmium. dissolved M200.71CP 0.010 B mg/L 0.003 0.02 522/99 gg <br />Cadmium, total M200.71CP 0.011 B mg/L 0.003 0.02 521/99 kr/jb <br />Copper, dissolved M200.71CP 0.02 B mp/l. 0.01 0.05 522/99 gg <br />Capper. total M200.71CP 0.08 mg/L 0.01 0.05 5/21/99 kr/jb <br />Iron. dissolved M200.71CP 0.05 mg/L 0.01 0.05 5/22/99 gg <br />Imo. total M200.71CP 4.05 mg/L 0.01 0.05 52!/99 kr/jb <br />Lead dissoWed M200.71CP U mg/L 0.04 0.2 5/22/99 gg <br />Lead, total h1200.7 [CP U mg/L 0.04 0.2 5/21/99 kr/jb <br />htansanesz, dissolved M200.71CP 0.668 mg/L 0.005 0.03 522/99 gg <br />Ataneanesz, total M200.7 ICP 0.751 mg/L 0.005 0.03 521/99 kr/jb <br />M1tercury. dissolved M246.1 CVAA U mg/L 0.0002 0.001 SR 1/99 ms <br />Mercury. laial M246.I CVAA U mg/L 0.0002 0001 5/19/99 ms <br />Zinc. dissolved M200.71CP 1.48 mg/L 0.01 0.05 6/2?/99 gg <br />Zinc. total M200.71CP 1.71 mg/L 0.01 0.05 5/21/99 kr/jb <br />Metals <br />Total Hot Plate Dieeaion M3010 ICP 520/99 [dr <br />Total Ha Plarc Disestion MJO10 GFAA 5/19/99 idr <br />Wet <br />Conductivity ~iiCSC M120.1-Meter 156 umhos/cm I 10 6/I?/99 ed <br />pH Ilab1 MI50.1 - ElectromeVic 6.0 units 0.1 0.1 6/I il99 ed <br />Residue. Fihcrablz (TDS)(~ISOC M160.1-Gravime0ic 110 mg/L 10 20 5/15/99 cd/mh <br />Residue.Non-Filterable (TSS)f it103-SC M160.2-Gravimetric 26 mg/L 5 20 5/1;/99 mh/cd <br />Sulfate M77>.3 -Gravimetric 50 mg/L 10 20 6/14/99 mh <br />Rec'efve~y <br />JUN 1 71999 <br />,,. <br />U =Analyze wu analyzed Ibr but not detected at the indicated MDL <br />B = Analytz concentration detected at a value between MDL and PQL <br />PQL =Practical Quanlilalion Limi[ <br />Divis~ of M neraj~ g Geo(~ <br />~~J.¢t.~ <br />Vice President of Operations: Ralph Poulsen <br />REPIN 101.03 95.01 Page 1 of 1 <br />