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ACiZ Laboratories, Inc. <br />2773 Downhill Drive Steam6oar Springs, CO 80487(800) 334-5493 <br />Midas Mining Co. ACZ ID: L38979-03 <br />Project ID: Date Sampled: 10116/02 14:45 <br />Sample ID: #4 HENSON ABOVE CON Date Received: 10/17/02 <br /> Sample Matrix: Surface Water <br />Metals Analysis <br /> ! ! -r ! <br />Aluminum, dissolved M200.7 ICP 0.39 mg/L 0.03 0.2 10/30/02 0:27 kdw <br />Arsenic, dissolved M200.8 ICP-MS 0.0017 B mg/L 0.0005 0.003 11/07/02 3:50 Icj <br />Boron, dissolved M200.7 ICP U mg/L 0.01 0.05 10/30/02 0:27 kdw <br />Cadmium, dissolved M200.6 ICP-MS 0.0010 mg/L 0.0001 0.0005 11/07/02 3:50 Icj <br />Calcium, dissolved M200.71CP 24.9 mg/L 0.2 1 10/30/02 0:27 kdw <br />Chromium, dissolved M200.8 ICP-MS 0.0001 B mg/L 0.0001 0.0005 11/07/02 3:50 Icj <br />Copper, dissolved M200.8 ICP-MS 0.0204 mg/L 0.0005 0.003 11/07/02 3:50 Icj <br />Iron, dissolved M200.71CP 0.18 mg/L 0.01 0.05 10/31/02 14:57 kdw <br />Magnesium, dissolved M200.71CP 2.8 mg/L 0.2 1 10/30/02 0:27 kdw <br />Manganese, dissolved M200.8 ICP-MS 0.292 mg/L 0.001 0.005 11/11/02 22:35 Icj <br />Mercury, dissolved M245.1 CVAA U mg/L 0.0002 0.001 10/25/02 13:23 wfg <br />Nickel, dissolved M200.81CP-MS 0.0024 mg/L 0.0002 0.001 11/07/02 3:50 Icj <br />Selenium, dissolved SM 3114 C, AA-Hydride U mg/L 0.001 0.005 11/01/02 11:16 wFg <br />Silver, dissolved M20D.8 ICP-MS U mg/L 5E-OS 0.0003 11/07/02 3:50 Icj <br />Zinc, dissolved M200.7 ICP 0.21 mg/L 0.01 0.05 10131/02 14:57 kdw <br />Wet Chemistry <br />~tit~ura S:1 ~Jahr--7iRT axirll i![IFI ~IRIS~7• 2~Pl~ Yq ~lR1~~ 1T:144.il <br />Chloride M325.2-Colorimetric U mg/L 1 5 10/30!0212:48 ksj <br />Conductivity @25C M720.1 -Meter 180 umhos/cm 1 10 10/25/02 18:06 hap <br />Hardness as CaC03 SM2340B -Calculation 74 mg/L 1 7 11/12/02 16:35 talc <br />Lab Filtration SM 3030 B 10/17/02 18:12 pll <br />Lab Filtration & SM 3030 B 10/21/02 17:13 cdr <br />Acidification <br />Nitrate as N, dissolved Calculation: N03N02 minus N02 0.13 mg/L 0.02 0.1 11/12!02 16:35 talc <br />Nitrate/Nitrite as N, M353.2 -Automated Cadmium 0.13 mg/L 0.02 0.1 10/17/02 18:30 pll <br />dissolved Reduction <br />Nitrite as N, dissolved M353.2 -Automated Cadmium U mg/L 0.01 0.05 10/17/02 18:30 pll <br /> Reduction <br />pH (lab) M150.1 - Eleclrometric 7.3 H units 0.1 0.1 10/26/02 14:30 hap <br />Sulfate M375.3 - Gravimetdc 50 mg/L 10 20 10124/02 11:37 hap <br />Sulfide as S M376.2 -Methylene Blue U mg/L 0.02 0.1 10/21/02 10:55 hap <br />REPIN.01.11.00.01 <br />L38979: Page 4 of 9 <br />