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/~ Laboratories, Inc. <br />2773 Downhill Drive Steamboat Sorinos. CO 80487(800) 334-5493 <br />Field Data <br /> "~I~ <br />Conductivity (Field) Field Measurement 1909 umhoslcm 04/12/06 11:59 jm <br />pH (Field) Field Measurement 7.6 units 04/12/06 17:59 jm <br />Temperature (Field) Field Measurement 12.9 C 04/12/06 11:59 jm <br />Metals Analysis <br /> <br />Calcium, dissolved M200.7 ICP 8.8 mg/L 0.2 1 04/20/06 18:05 jjc <br />Iron, dissolved M200.7 ICP 1.66 mg/L 0.02 0.05 D4I20/O6 18:05 jjc <br />Magnesium, dissolved M200.71CP 1.2 mg/L 0.2 1 04120/06 18:05 jjc <br />Manganese, dissolved M200.7 ICP 0.045 mg/L 0.005 0.03 04/19/06 19:40 jjc <br />Potassium, dissolved M200.7 ICP 2.0 mg/L 0.3 1 04/19/06 19:40 jjc <br />Sodium, dissolved M200.71CP 468 mg/L 0.3 1 0412010618:05 ~ jjc <br />We[ Chemistry <br /> <br />a <br />• <br />r <br />-~ <br />r, 1,~I~~~fI~7 <br />Alkalinity as CaC03 SM2320B -Titration <br />Bicarbonate as 1060 mg/L 2 20 04/13/06 0:00 - jtt <br />CaC03 <br />Carbonate as CaC03 U mg/L 2 20 04/13/06 0:00 jlf <br />Hydroxide as CaC03 U mg/L 2 20 04/13/06 0:00 jlf <br />Total Alkalinity 1060 mg/L 2 20 04/13/06 0:00 jlf <br />Cation-Anion Balance Calculation <br />Cation-Anion Balance -2.7 °/ 04/25106 70:15 talc <br />Sum of Anions 22.5 meq/L 0.1 0.5 04125/06 10:15 talc <br />Sum of Cations 21.3 meq/L 0.1 0.5 04125/06 10:15 talc <br />Chloride M325.2-Colodmetric 46 mg/L 1 5 04/18/0612:23 nps <br />Hardness as CaC03 SM23408 -Calculation 27 mglL 1 7 04/25/06 10:15 talc <br />Lab Filtration SM 3030 B 04/18/06 10:07 nps <br />Lab Filtration & SM 3030 B ` 04/18/Ofi 11:12 ert <br />Acidification <br />Nilra[e as N, dissolved Calculation: N03N02 minus N02 U mg/L 0.02 0.1 04125106 10:15 talc <br />NitrafelNiMte as N, M353.2 -Automated Cadmium U mg/L 0.02 0.1 04173106 18:36 pjb <br />dissolved Reduction <br />Nitrite as N, dissolved M353.2 -Automated Cadmium U mg/L 0.01 0.05 04/13/06 18:36 pjb <br /> Reduction <br />Residue, Filterable M160.1 -Gravimetric 1230 mg/L 10 20 04/18/06 15:10 jtt <br />(TDS) @180C <br />Sodium Absorption USGS - 11738-78 39.70 0.03 0.15 04/25!06 10:15 talc <br />Ratio in Water <br />Sulfate SM4500504-D U mg/L 10 50 04/18/0618:04 jlt <br />TDS (calculated) Calculation 1160 mg/L 10 50 04125/06 10:15 talc <br />TDS (ratio - Calculation 1.06 04125/06 10:15 talc <br />measured/calculated) <br />REPIN.02.06.05.01 'Please refer fo Extended Qualifier Report for detail. <br /> L56030: Page 4 of 19 <br />Kerr Coal Company ACZ Sample ID: L56030-03 <br />Project ID: Date Sampled: 04/12/06 11:59 <br />Sample ID: SP-01 Date Received: 04/13/06 <br />Sample Matrix: Ground Water <br />