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~~ Laboratories, Inc. <br />2773 Downhill Drive Steamboat Springs, CO 80487(800) 334-5493 <br />Kerr Coal Company ACZ Sample ID: L56030.02 <br />Project ID: Date Sampled: 04/12/06 10:50 <br />Sample ID: 79-61 Date Received: 04/13/06 <br /> Sample Matrix: Ground Water <br />Field Data <br />Conductivity (Field) Field Measurement 907 umhoslcm 04/12/06 10:50 jm <br />pH (Field) Field Measurement 7.7 units 04/12/06 10:50 jm <br />Temperature (Field) Field Measurement 11.5 C 04/12/06 10:50 jm <br />Metals Analysis <br />7FTTFr~Tdf=l~ ~J_!•~'ti~ti[I :(~Y+if +<frF.lrotear(mL ~r1{rIr® 1~7// +•Flr~r/~T FI(r~i <br />i® <br />Calcium, dissolved M200.7 ICP 65.9 mg/L 0.2 1 04/20/0618:01 jjc <br />Iron, dissolved M200.7 ICP 0.04 B mg/L 0.02 0.05 04/20/06 18:01 jjc <br />Magnesium, dissolved M200.7 ICP 18.0 mglL 0.2 1 04/20/06 18:01 jjc <br />Manganese, dissolved M200.7 ICP 0.036 mg/L 0.005 0.03 04/19/06 19:36 jjc <br />Potassium, dissolved M200.7 ICP 2.6 mg/L 0.3 1 04/19/06 19:36 jjc <br />Sodium, dissolved M200.71CP 110 mg/L 0.3 1 04/20/06 18:01 jjc <br />Wet Chemistry <br /> <br />Alkalinity as CaC03 SM2320B -Titration <br />Bicarbonate as 441 mg/L 2 20 04/13/06 0:00 j0 <br />CaC03 <br />Carbonate as CaC03 U mg/L 2 20 04/13/06 0:00 jff <br />Hydroxide as CaC03 U mg/L 2 20 04/13/06 0:00 jtF <br />Total Alkalinity 441 mg/L 2 20 04!13/06 0:00 - jlf <br />Cation-Anion Balance Calculation <br />Cation-Anion Balance -6.3 % 04/25/06 10:15 talc <br />Sum of Mions 10.9 meq/L 0.1 0.5 04/25/06 10:15 talc <br />Sum of Cations 9.6 meq/L 0.1 0.5 04/25/06 10:15 talc <br />Chloride M325.2-Colodmetric 53 • mg/L 1 5 04/18/0612:22 nps <br />Hardness as CaC03 SM2340B-Calculation 239 mg/L 1 7 04!25/0610:15 talc <br />Lab Filtration SM 3030 B 04/18/06 10:05 nps <br />Lab Filtration & SM 3030 B 04/18/06 10:08 ert <br />Acidification <br />Nitrate as N, dissolved Calculation: N03N02 minus N02 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 04113!06 18:35 pjb <br />dissolved Reduction <br />Nitrite as N, dissolved M353.2 -Automated Cadmium U mg/L 0.01 0.05 04/13/06 18:35 pjb <br /> Reduction <br />Residue, Filterable M160.1 - Gravimetric 590 mglL 10 20 04/18/06 15:10 jlt <br />(TDS) @180C <br />Sodium Absorption USGS - 11738-78 3.13 0.03 0.15 04/25/06 10:15 talc <br />Ratio in Water <br />Sulfate SM4500 504-D 30 B mg/L 10 50 04/18/06 18:01 jlt <br />TDS (calculated) Calculation 544 mg/L 10 50 04/25/06 10:15 talc <br />TDS (ratio- Calculation 1.06 04/2510610:15 talc <br />measured/calcu I ated) <br />REPIN.02.06.05.01 'Please refer to Extended Qualifier Repoli for detail <br />L56030: Page 3 of L9 <br />