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~~i~ Laboratories, Inc. <br />2773 Downhill Drive Steamboat Springs, CO 80487(800) 334-5493 <br />Field Data <br /> r • ~ .. - Iii <br />Conductivity (Field) Field Measurement 795 mS/cm 07/19/06 11:30 jm <br />pH (Field) Field Measurement 7.8 units 07/19/06 11:30 jm <br />Temperature (Field) Field Measurement 16.0 C 07/19/06 11:30 jm <br />Metals Analysis <br /> <br />Calcium, dissolved M200.71CP 56.2 mg/L 0.2 1 08/02/06 3:44 'msh <br />Iron, dissolved M200.71CP 0.16 mg/L 0.02 0.05 D8/02/06 3:44 msh <br />Magnesium, dissolved M200.7 ICP 26.5 mg/L 0.2 1 08/02/06 3:44 msh <br />Manganese, dissolved M200.71CP 0.243 mg/L 0.005 0.03 08/02/063:44 msh <br />Potassium, dissolved M200.71CP 2.4 mg/L 0.3 1 06/02/063:44 msh <br />Sodium, dissolved M200.7 ICP 83.7 mg/L 0.3 1 08/02/06 3:44 msh <br />Wet Chemistry <br /> r • - r • • .. ~ IiYiitiii <br />Alkalinity as CaCO3 SM23206 -Titration <br />Bicarbonate as 288 mg/L 2 20 07/30/06 0:00 ct <br />CaCO3 <br />Carbonate as CaCO3 U mg/L 2 20 07/30/06 0:00 ct <br />Hydroxide as CaCO3 U mg/L 2 20 07/30/06 0:00 ct <br />Total Alkalinity 268 mg/L 2 20 07/30/06 0:00 cl <br />Cation-Anion Balance Calculation <br />Cation-Anion Balance 1.8 % 08/02/06 12:24 talc <br />Sum of Anions 8.4 meglL 0.1 D.5 08102106 12:24 talc <br />Sum of Cations 8.7 meq/L 0.1 0.5 08/02!06 12:24 talc <br />Chlodde M325.2-Colodmetric 4 B mg/L 1 5 07/20/0615:46 j8 <br />Hardness as CaCO3 SM2340B -Calculation 249 mg/L 1 7 08/02/06 12:24 talc <br />Lab Filtration SM 3030 B 07/20/06 15:00 jlf <br />Lab Filtration 8 SM 3030 B * 07/24/06 13:00 rea <br />Acidification <br />Nitrate as N, dissolved Calculation: NO3NO2 minus NO2 0.73 mg/L 0.02 0.1 08/02/06 12:24 talc <br />Nitrate/Nitrite as N, M353.2 -Automated Cadmium 0.14 ' mg/L 0.02 0.1 07!20/D6 21:19 pjb <br />dissolved Reduction <br />Nitdte as N, dissolved M353.2 -Automated Cadmium 0.01 B ' mg/L 0.01 0.05 07!20/06 21:19 pjb <br /> Reduction <br />Residue, Filterable M160.1 - Gravimetric 500 mg/L 10 20 07/25/06 14:13 kmc <br />(TDS) @780C <br />Sodium Absorption USGS - 11738-78 2.33 0.03 0.15 08/02/06 12:24 talc <br />Ratio in Water <br />Sulfate SM45005O4-D 120 mg/L 10 50 07/26/0616:26 kmc <br />TDS (calculated) Calculation 467 mg/L 10 50 08/02/06 12:24 talc <br />TDS (ratio - Calculation 1.07 08/02106 12:24 talc <br />measured/calculated) <br />REPIN.02.06.05.01 'Please refer to. Qualifier Reports for detail <br />L57759: Page 2 of 12 <br />Kerr Coal Company ACZ Sample ID: L57759-01 <br />Project ID: Date Sampled: 07/19/06 11:30 <br />Sample ID: AO-2A Date Received: 07/20/06 <br />Sample Matrix: Ground Water <br />