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~riZ Laboratories, Inc. <br />2773 Downhill Drive Steamboat Sonnas_ CO A0487/x001 334-5493 <br />Field Da[a <br />P r (. 1¢ -P 0. <br />Conductivity (Field) Field Measurement 400 umhoslcm 04/25/05 11:00 jcm <br />pH (Field) Field Measurement 7.9 units 042510511:00 jcm <br />Temperature (Field) Fieltl Measurement 8.0 C 04125/05 11:00 jcm <br />Metals Analysis <br /> P e e • P .. - <br />Cabium,dissolved M200.71CP 7.6 mglL 0.2 1 0510510521:39 mea <br />Iron, dissolved M200.7 ICP 0.38 mg/L 0.01 0.05 05!05/05 21:39 mea <br />Magnesium, dissolved M200.71CP 0.9 B mg/L 0.2 1 05105/0521:39 mea <br />Manganese, dissolved M200.71CP 0.036 mglL 0.005 0.03 05/06/0521:39 mea <br />Potassium, dissolved M200.7 ICP 7.9 mg/L 0.3 1 05/05/05 21:39 mea <br />Sodium, dissolved M200.71CP 471 mglL 0.3 1 05/0510521:39 mea <br />Wet Chemistry <br /> e • e -n e. - <br />Alkalinity as CaC03 SM2320B - Titration <br />Bicarbonate as 1030 H mglL 2 10 05/14/05 0:00 ktd <br />CaC03 <br />Carbonate as CaC03 UH mg/L 2 10 05/14105 0:00 kttl <br />Hydroxitle as CaC03 UH mg/L 2 10 05/74/05 0:00 ktd <br />Total Alkalinity 1030 H ' mglL 2 10 05/74!050:00 ktd <br />Cation-Anion Balance Calculation <br />Cation-Anion Balance -2.5 % 05/18105 0:00 talc <br />Sum of Anions 22.3 meglL 0.1 0.5 OSM B/050:00 talc <br />Sum of Cations 21.2 meq/L 0.1 0.5 05118/05 0:00 cab <br />Chloride M325.2 - Colorimetdc 54 mg/L 1 5 05104/05 1:51 art <br />Hartlness as CaC03 SM2340B-Calculation 23 mg/L 1 7 05/1a/050:00 talc <br />Lab Filtration SM 3030 B ' 04/27/05 9:16 Ims <br />tab Filtration & SM 3030 8 0426/0516:00 ak <br />Acid~cetion <br />Nitrate as N, dissolved Calculation: N03N02 minus N02 U mg/L 0.02 0.1 05!18/05 0:00 talc <br />NitratelNitdte as N, M353.2 -Automated Cadmium U mglL 0.02 0.1 0427!05 2:59 erf <br />dissolvetl Reduction <br />Nitdte as N, dissolved M353.2 -Automated Cadmium 0.02 B mg/L 0.01 0.05 04/271052:59 art <br /> Reduction <br />Residue, Filterable M160.1 -Gravimetdc 1230 mg/L 10 20 05107J0518:07 jtl <br />(TDS) @180C <br />Sodium Absorption USGS-11738-78 43.50 0.03 0.15 05/18/050:00 talc <br />Ratio in Water <br />SuKate M375.3-Gravimetric 10 B mg/L 10 50 05/11/0516:22 tam <br />TDS (celculated) Calculation 1160 mg/L 70 50 05/18/050:00 talc <br />TDS (ratlo- Calculation LO6 05/18/050:00 talc <br />measuredlcalculated) <br />REPiN.01.11.00.01 'Please refer to Extended Dual~er Report for detail. <br />L50789: Page 3 of 10 <br />Kerr Coal Company ACZ Sample ID: L50789-01 <br />Project ID: Date Sampled: 04/25/0511:00 <br />Sample ID: SP-01 Date Received: 04126/05 <br />Sample Matrix: Ground Water <br />