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Acz • • <br />ACZ Labornlories, /nc. <br />30400 Dox'nhilf Orire <br />Sreamboar S'ptirgr, CO 80487 <br />(800) 334-5493 <br />Lab Sample ID: L21073-04 <br />Client Sample ID: /1-98 Trench /n/ef <br />Client Project ID: Brr/(dog Mrne <br />ACZ Report ID: RG81955 <br />Homestake Mining Company Date Sampled : ///7/98 //:10 <br />650 California St. Date Received : 1!/!0/98 <br />San Francisco, CA 94108 Date Reported : 1//25/98 <br />Alan Cox <br />cc: Scott Randall Sample Matrix : Svrfnce Wcner <br />Field Da <br />t <br />a <br />_ <br />_ <br />~ • <br />Conductivity IField) Firld Meaurement 227 u mhos/cm 11/7/98 jr <br />pli (Field) Field Measurement 5.4 units 11/7/96 jr <br />Tanperaune (Field) Field Measurement 6.1 C 11/7/98 jr <br />Metals A_nalxsis <br /> <br />I trl uu.4r. <br />'• ..:. t .':'.:. , <br />we~ ...... .. u /t <br />a. \u ':~1 <br />~'~V <br />Y~ <br />~ <br />A hnninum. Intal M20071CP 0.46 mg/L 0.03 0.2 11/24/98 SB <br />Arsenic, dissolved M206.2 GFAA 0.005 mg/L 0.001 0005 11/15/98 jb <br />Arscnlc. total M206.2 GFAA 0.017 mg/L OOUI 0.005 1122/98 jb <br />Cadmium, disailved M200.71CP 0.064 mg/L 0.003 0.02 I (/12/96 kr <br />Cadmium, rtnal M200.7 1CP 0.089 mg/L 0.003 0.02 11/23/98 kr <br />C'npper, Jissolvrd M11200.71CP U mg/L 0.01 0.05 11/12/98 kr <br />Copper. lnml M200.71CP U mg/L 0.01 0.05 11/23/98 kr <br />Iron. dissolved M200.71CP 0.06 ntg/L 0.01 0.05 11/12/98 kr <br />Iron, toad M200.7 ICP LOS mg/L 0.01 0.05 I (/23/96 kr <br />Lead. dissol vcd M200.71CP 0.19 B mg/L 0.04 0.2 I (/12/98 kr <br />I cad toml M200 7 ICP 0.25 mg/L 0.04 0.2 I (/23/98 kr <br />blanganese. dissolved M200.71CP 1.610 mg/L 0.005 0.03 11/12/98 kr <br />hlanganar. tnlal M200.71CP 1.620 mg/L 0.005 0.03 1123/98 kr <br />Mrrcun~, dissolved M?45.1 C'VAA U mg/L 0.0002 0.001 I (/20/98 bg <br />Mercury. total M245.1 CVAA U mg/L 0.0002 0.001 11/18/98 bg <br />Zinc, Jissuls ed fs720071CP 7.58 mg/L 0.01 0.05 11/14/98 kr <br />"Lint, total M200.7 ICP 3.52 mg/L 0.01 0.05 I (/23/98 kr <br />Metals Prep <br /> <br />Total Hot Plate Digestion M30101Cp I (/21/98 ms <br />Total Hot Plate Digestion M3010 GFAA 1123/98 rats <br />of+.rtttarur _ "ira6ayhSF~3"d1 'mTrlnS }o~gs>r~a~u~fa' v4tc~ 'f=xog lrs~r x-m®a <br />Condunivny @A~sC M120.1-Meter 206 umhos/cm I 10 11/14/98 sts <br />pH Qab) MI50.1 -Fledrontetric $.4 units 01 0.1 I (/14/98 sts <br />Residue. Filtemhlr (TDS) a IBOC M160.1 -Gravimetric 170 mg/L 10 20 I (/11/98 als <br />Residue Non-Fiherahle (TSS)ylU3-SC M160.2-Gravimetric U mg1L 5 20 11/11/98 az/mh <br />Sulfate M375.3-Gravimetric 80 mg/L 10 20 11/11/98 az/mh <br />rnf T.I il1~~yJ7BrLl'E'j~P,Y'(4~+{~Af ,1tir T4 'ts, }iv <br />U Analyse «ns malyzcd for but not detected al the indicated`MDL <br />B = Analyze concrnlmtion detected at a value between MDL and PQL <br />PQL = Pracord Quantization Limit <br />/1~~~ <br />Vice President of Operations: Ralph Poulsen <br />REPIN701 03 95.01 Page 1 of 1 <br />