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~ EICZ ACZ La6oraiories, Inc. Lab Sample ID: L28741-01 1773 Downhill Drive Client Sample 1D: Portal Sieam6oal Springs, CO 80!87 Client Prof CC[ ~: (800) 331-5493 ACZ Report iD: RG125617 Midas Mining Co. Date Sampled: 07/06/200010:30:00 AM P.O. Box 772 Date Received: 07/07/2000 Philomath, OR 97370 Date Reported: 08/08/2000 Wayne R. Giesy Sample Matrix: Surface Water Metals Analysis Aluminum, dissolved M200.7 ICP U mg/L 0.03 0.2 7/272000 kr Arunic, toad M206.2 GFAA 0.012 mg/L 0.001 0.005 7/192000 jb Bomn, total M200.71CP 0.02 B mg/L 0.01 0.05 7/13/2000 ct Cadmium, potentially dissolved M213.2 GFAA 0.0034 mg/L 0.0005 0.003 728/2000 jb Calcium, dissolved M200.71CP 30.1 mg/L 0.2 1 7272000 kr Chmmium, potentially dissolved M218.2 GFAA U mg/L 0.001 0.005 8/8!2000 jl Copper, potentially dissolved M220.2 GFAA 0.003 B mg/L 0.001 0.005 8/22000 jl Iron, total recoverable M200.71CP 0.27 mg/L 0.01 0.05 7/172000 kr Magnesium, dissolved M200.7 ICP 1.4 mg/L 0.2 I 7272000 kr Manganese, dissolved M200.7 ICP U mg/L 0.005 0.03 7272000 kr Mercury,total M245.1 CVAA U mg/L 0.0002 0.001 7/132000 gag Nickel, potentially dissolved M200.71CP U mg/L 0.01 0.05 8/12000 jb Selenium, total SM 3500-Se C, AA-Hydride U mg/L 0.001 0.005 7/12!1000 gag Silver, potentially dissolved M272.2 GFAA U mg/L 0.0005 0.003 7262000 jb Zinc, potentially dissolved M200.7 ICP 0.48 mg/L 0.01 0.05 8/12000 jb Metals Prep Total Digestion M200.2 GFAA 7/I 12000 emr Total Hot Plate Digestion M200.2 ICP 7/102000 tcg Total Recoverable Digestion M200.2 ICP 7/102000 tcg Wet Chemistry Chloride M325.2-Colorimetric (RFA) I B mg/L I 5 7/142000 hl Chmmium, Hexavalent SM35000r-D U mg/L 0.005 0.03 7/72000 kac Cyanide,WAD SM4500-CN ILolorimetric w/ U mg/L 0.01 0.05 7/132000 tcg distillation Hardness as CaC03 SM2340B -Calculation 81 mg/L I 7 8/82000 talc Lab Filtration ••• 7/82000 tdr Lab Filuelion 8: Acidification ••• 7/82000 tdr Lab Filtration (or Polcntially ••• 7/82000 tdr Dissolved NiVate as N, dissolved Calculation: N03N02 minus N02 2.15 mg/L 0.02 0.1 8/62000 talc Nitrate/Nitrite as N, dissolved M353.2 -Automated Cadmium 2.15 mg/L 0.02 0.1 7/72000 ejs Reduction Nitrite az N, dissolved M353.2 -Automated Cadmium U mg/L 0.01 0.05 7/72000 ejs Reduction Nitrogen, ammonia M350.1 -Automated Phcnate U mg/L 0.05 0.3 7/152000 hl U =Analyze was anal yrcd for but not detected et the indicated MDL B =Analyze concentration detected at a value between MDL and PQL PQL =Practical Quantization Limit STEW-REPIN.01.99.01 Page 1 of 2 S. I~cu ~ >, ,,,,~Q Ralph Poulson (VP) /Scott Habermehl (Ptvf)