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Laboratories, Inc. <br />2773 Downhill Drive Steamboat 6orin4s. CO 80487(800) 334-5493 <br />Kerr Coal Company ACZ Sample ID: L56O30.O4 <br />Project ID: Date Sampled: 04/12/06 12:30 <br />Sample ID: 79-3 Date Received: 04/13/06 <br /> Sample Matrix: Ground Water <br />Field Data <br />Conductivity (Field) Field Measurement 1149 umhos/cm 04/12106 12:30 jm <br />pH (Field) Field Measurement 7.6 units 04/12/06 12:30 jm <br />Temperature (Field) Field Measurement 11.9 C 04/12/06 12:30 jm <br />Metals Analysis <br /> • r '! r. <br />Calcium, dissolved M200.71CP 69 mg/L 1 5 04/20/Ofi 18:09 jjc <br />Iron, dissolved M200.7 ICP 1.0 mg/L 0.1 0.3 04120106 18:09 llc <br />Magnesium, dissolved M200.7 ICP 11 mg/L 1 5 04120/06 18:09 jjc <br />Manganese, dissolved M200.7 ICP 0.075 mg/L 0.005 0.03 04/19/06 19:43 jjc <br />Potassium, dissolved M200.71CP 23.6 mg/L 0.3 1 04/19/06 19:43 llc <br />Sodium, dissolved M200.7 ICP ~ 7560 mg/L 2 5 04/20/06 78:09 Ijc <br />Wet Chemistry <br /> e e - r ~~ ~. - I~ <br />Alkalinity as CaCO3 SM23208-Titration <br />Bicarbonate as 305 mg/L 2 20 04/13/06 0:00 jtt <br />CaCO3 <br />Carbonate as CaCO3 U mg/L 2 20 04/13106 0:00 jlf <br />Hydroxide as CaCO3 U mg/L 2 20 04/13/06 0:00 jlf <br />Total Alkalinity 305 mg/L 2 20 04/13/06 0:00 jtt <br />Cation-Anion Balance Calculation <br />Cation-Anion Balance 9.4 % 04/25!06 10:15 talc <br />Sum of Anions 61.0 meq/L 0.1 0.5 , 04/25106 10:15 talc <br />Sum of Cations 73.7 meq/L 0.1 0.5 04/25/06 10:15 talc <br />Chlodde M325.2-Colodmetric 1960 mg/L 30 200 04/18/0613:04 nps <br />Hardness as CaCO3 SM2340B-Calculation 218 mg/L 1 7 04/25/0610:15 talc <br />Lab Filtration SM 3030 B 04/18106 10:09 nps <br />Lab Filtration 8 SM 3030 B 04/18106 12:16 ert <br />Acidification <br />Nitrate as N, dissolved Calculation: NO3NO2 minus NO2 U mg/L 0,02 0.1 04/25/06 10:15 talc <br />Nitrate/Nitrite as N, M353.2 -Automated Cadmium U mg/L 0.02 0.1 04/13106 18:37 pjb <br />dissolved Reduction <br />Nitrite as N, dissolved M353.2 -Automated Cadmium U • mg/L 0,01 0.05 04/13/06 18:37 pjb <br /> Reduction <br />Residue, Filterable M160.1 -Gravimetric 4380 mg/L 10 20 04118/0616:11 jtt <br />(TDS) @180C <br />Sodium Absorption USGS - 11738-78 46.50 0,03 0.15 04/25/06 10:15 talc <br />Ratio in Water <br />Sulfate SM4500 SO4-D U mg/L 10 50 04/18/06 18:06 jtt <br />TDS (calculated) Calculation 3810 mglL 10 50 04/25/Ofi 10:15 talc <br />TDS (ratio- Calculation 1.15 04/2510610:15 talc <br />measured/calculated) <br />REPIN.02.06.05.01 'Please refer to Extended Qualifier Report for detail. <br />L56030: Page 5 of19 <br />