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ACZ Laboratories, Inc. <br />2773 Downhill Drive Steamboat Snrinos. CO 80487(8001 334-5493 <br />Kennecott Energy Co: Colollvyo Coal Co. LP ACZ Sample ID: L47159-03 <br />Project ID: W67O81 Date Sampled: 08/10/04 08:40 <br />Sample ID: NUGSC Date Received: 08/11/04 <br />Sample Matrix: Surface Water <br />Field Data <br /> r f r. <br />Conductivity (Field) Field Measurement 1880 umhos/cm 08/10/04 8:40 kb <br />Flow (Field) Field Measurement 4.51 cfs 08/10/04 6:40 kb <br />pH (Field) Field Measurement 8.1 units 08!10!04 8:40 kb <br />Temperature (Field) Field Measurement 9.7 C 08/10/04 8:40 kb <br />Metals Analysis <br /> <br />Arsenic, total M200.8 ICP-MS U mg/L 0.001 0.005 09/15/04 5:23 gjl <br />recoverable <br />Calcium, dissolved M200.71CP 144 mg/L 0.2 1 08/11/0422:45 scp <br />Iron, total M200.71CP 0.07 mg/L 0.01 0.05 09/01/04 13:27 wfg <br />Lead, total recoverable M200.7 ICP U mg/L 0.04 0.2 08/20/04 2:45 wfg <br />Magnesium, dissolved M200.71CP 160 mg/L 0.2 1 08/11/0422:45 scp <br />Manganese, total M200.7 ICP 0.024 B mg1L 0.005 0.03 08/20/04 2:45 wfg <br />recoverable <br />Mercury, total M245.1 CVAA U mg/L 0.0002 0.001 08/26/04 17:26 pc <br />Selenium, total SM 3114 B, AA-Hydride 0.015 mg/L 0.001 0.005 08/12/04 16:21 jjc <br />recoverable <br />Sodium, total M200.7 ICP 66.3 mg/L 0.3 1 08/20/04 2:45 wfg <br />recoverable <br />Zinc, total recoverable M200.7 ICP U mg/L 0.01 0.05 08/20/04 2:45 wfg <br />Metals Prep <br />~ w r •• r. I <br />Total Hot Plate M200.2 lCP 08123104 13:04 wfg <br />Digestion <br />Total Recoverable M200.2 ICP 08/19/04 8:41 wfg <br />Digestion <br />Total Recoverable M200.2 ICP-MS 06131104 16:30 gjVak <br />Digestion <br />REPIN.01.11.00.01 <br />Please refer to Extended qualifier Report for detail. <br />L47159: Page 6 of 23 <br />