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ADZI-aboratories, Inc. " <br />2773 Downhill Drive Steamboat Springs, CO 80487(800) 334-5493 <br />Kerr Coal Company ACZ Sample ID: L63744-03 <br />Project ID: Date Sampled: 07/11/07 11:00 <br />Sample ID: 79-1 Date Received: 07111107 <br /> Sample Matrix: Ground Water <br />Field Data <br /> <br /> <br />Conductivity (Field) Field Measurement <br />2070 _ ms/cm _ <br />07/11/07 11:00 <br />jm <br />pH (Field) Field Measurement 8.3 units 07/11/07 11:00 jr, <br />Temperature (Field) Field Measurement 10.0 C 07/11/07 11:00 jm <br />Metals Analvsis <br />Calcium, dissolved M200.7 ICP 12.6 mg/L 0.2 1 07/19/07 22:32 wfg <br />Iron, dissolved M200.7 ICP 0.05 B mg/L 0.02 0.05 07/19/07 22:32 wfg <br />Magnesium, dissolved M200.7 ICP 1.4 mg/L 0.2 1 07/19/07 22:32 wfg <br />Manganese, dissolved M200.7 ICP 0.033 mg/L 0.005 0.03 07119/07 22:32 wfg <br />Potassium, dissolved M200.7 ICP 1.8 B mg/L 0.3 2 07/21/07 1:34 djt <br />Sodium, dissolved M200.7 ICP 416 mg/L 0.3 2 07/21/07 1:34 djt <br />Wet Chemistry <br />- - --- - <br /> <br />Alkalinity as CaC03 SM2320B - Titration <br />Bicarbonate as 689 mg/L 2 20 07114/07 0:00 cas <br />CaC03 <br />Carbonate as CaC03 18 B mg/L 2 20 07114/07 0:00 cas <br />Hydroxide as CaC03 U mg/L 2 20 07/14/07 0:00 Icas <br />Total Alkalinity 706 mg/L 2 20 07/14/07 0:00 cas <br />Cation-Anion Balance Calculation <br />Cation-Anion Balance -6.1 % 08/06/07 0:00 calc <br />Sum of Anions 21.6 meq/L 0.1 0.5 08/06/07 0:00 talc <br />Sum of Cations 19.1 meq/L 0.1 0.5 08/06/07 0:00 calc <br />Chloride 325.2 / SM45000I-E 258 mg/L 5 30 07/17/07 9:49 amlrjag <br />Hardness as CaC03 SM2340B - Calculation 37 mg/L 1 7 08/06/07 0:00 calc <br />Lab Filtration SM 3030 B * 07112/07 11:37 bjl <br />Lab Filtration $ SM 3030 B 07/12/07 8:51 bjl <br />Acidification <br />Nitrate as N, dissolved Calculation: N03N02 minus N02 U mg/L 0.02 0.1 08/06/07 0:00 calc <br />Nitrate/Nitrite as N, M353.2 - Automated Cadmium U mg/L 0.02 0.1 07/11/07 21:19 pjb <br />dissolved Reduction <br />Nitrite as N, dissolved M353.2 - Automated Cadmium U mg/L 0.01 0.05 07/11/07 21:19 pjb <br /> Reduction <br />Residue Filterable 160.1 / SM2540C 1200 mg/L 10 20 07/17/07 11:52 aeh <br />(TDS) @180C <br />Sodium Absorption USGS - 11738-78 30.00 0.03 0.15 08106107 0:00 Icalc <br />Ratio in Water <br />Sulfate SM4500 S04-D 10 B * mg/L 10 50 07/19/07 14:40 kmc <br />TDS (calculated) Calculation 1130 mg/L 10 50 08/06107 0:00 !calc <br />TDS (ratio - Calculation 1.06 08/06/07 0:00 calc <br />measured/calculated) <br />REPIN.02.06.05.01 * Please refer to Qualifier Reports for detail. <br />I L63744: Page 5 of 18